Organic photodiodes: device engineering and applications

Abstract

Organic photodiodes (OPDs) have shown great promise for potential applications in optical imaging, sensing, and communication due to their wide-range tunable photoelectrical properties, low-temperature facile processes, and excellent mechanical flexibility. Extensive research work has been carried out on exploring materials, device structures, physical mechanisms, and processing approaches to improve the performance of OPDs to the level of their inorganic counterparts. In addition, various system prototypes have been built based on the exhibited and attractive features of OPDs. It is vital to link the device optimal design and engineering to the system requirements and examine the existing deficiencies of OPDs towards practical applications, so this review starts from discussions on the required key performance metrics for different envisioned applications. Then the fundamentals of the OPD device structures and operation mechanisms are briefly introduced, and the latest development of OPDs for improving the key performance merits is reviewed. Finally, the trials of OPDs for various applications including wearable medical diagnostics, optical imagers, spectrometers, and light communications are reviewed, and both the promises and challenges are revealed.

Key words： Organic photodiodes; Wearable electronics; Photoplethysmography; Optical imagers; Spectrometers; Optical communications

References

1 García de Arquer, F.P., Armin, A., Meredith, P., Sargent, E.H.: Solution-processed semiconductors for next-generation photo-detectors. Nat. Rev. Mater. 2(3), 1–17(2017)

2 Tan, C.L., Mohseni, H.: Emerging technologies for high performance infrared detectors. Nanophotonics 7(1), 169–197(2018)

3 Rogalski, A., Kopytko, M., Martyniuk, P.: 2D material infrared and terahertz detectors: status and outlook. Opto-Electron. Rev. 28(3), 107–154(2020)

4 Saran, R., Curry, R.J.: Lead sulphide nanocrystal photodetector technologies. Nat. Photon. 10(2), 81–92(2016)

5 Bruns, O.T., Bischof, T.S., Harris, D.K., Franke, D., Shi, Y., Riedemann, L., Bartelt, A., Jaworski, F.B., Carr, J.A., Rowlands, C.J., Wilson, M.W.B., Chen, O., Wei, H., Hwang, G.W., Montana, D.M., Coropceanu, I., Achorn, O.B., Kloepper, J., Heeren, J., So, P.T.C., Fukumura, D., Jensen, K.F., Jain, R.K., Bawendi, M.G.: Next-generation in vivo optical imaging with short-wave infrared quantum dots. Nat. Biomed. Eng. 1(4), 1–11(2017)

6 Xu, Y., Lin, Q.: Photodetectors based on solution-processable semiconductors: recent advances and perspectives. Appl. Phys. Rev. 7(1), 011315(2020)

7 Lau, Y.S., Lan, Z., Cai, L., Zhu, F.: High-performance solution-processed large-area transparent self-powered organic near-infrared photodetectors. Mater. Today Energy. 21, 100708(2021)

8 Ng, T.N., Wong, W.S., Chabinyc, M.L., Sambandan, S., Street, R.A.: Flexible image sensor array with bulk heterojunction organic photodiode. Appl. Phys. Lett. 92(21), 213303(2008)

9 Pierre, A., Deckman, I., Lechêne, P.B., Arias, A.C.: High detectivity all-printed organic photodiodes. Adv. Mater. 27(41), 6411–6417(2015)

10 Verstraeten, F., Gielen, S., Verstappen, P., Raymakers, J., Penxten, H., Lutsen, L., Vandewal, K., Maes, W.: Efficient and readily tuneable near-infrared photodetection up to 1500 nm enabled by thiadiazoloquinoxaline-based push–pull type conjugated polymers. J. Mater. Chem. C Mater. Opt. Electron. Devices. 8(29), 10098–10103(2020)

11 Guo, D., Yang, L., Zhao, J., Li, J., He, G., Yang, D., Wang, L., Vadim, A., Ma, D.: Visible-blind ultraviolet narrowband photomultiplication-type organic photodetector with an ultrahigh external quantum efficiency of over 1000000. Mater. Horiz. 8(8), 2293–2302(2021)

12 Ding, N., Wu, Y., Xu, W., Lyu, J., Wang, Y., Zi, L., Shao, L., Sun, R., Wang, N., Liu, S., Zhou, D., Bai, X., Zhou, J., Song, H.: A novel approach for designing efficient broadband photodetectors expanding from deep ultraviolet to near infrared. Light Sci. Appl. 11(1), 91(2022)

13 Jacoutot, P., Scaccabarozzi, A.D., Zhang, T., Qiao, Z., Aniés, F., Neophytou, M., Bristow, H., Kumar, R., Moser, M., Nega, A.D., Schiza, A., Dimitrakopoulou-Strauss, A., Gregoriou, V.G., Anthopoulos, T.D., Heeney, M., McCulloch, I., Bakulin, A.A., Chochos, C.L., Gasparini, N.: Infrared organic photodetectors employing ultralow bandgap polymer and non-fullerene acceptors for biometric monitoring. Small 18(15), e2200580(2022)

14 Fuentes-Hernandez, C., Chou, W.F., Khan, T.M., Diniz, L., Lukens, J., Larrain, F.A., Rodriguez-Toro, V.A., Kippelen, B.: Large-area low-noise flexible organic photodiodes for detecting faint visible light. Science 370(6517), 698–701(2020)

15 Park, S., Fukuda, K., Wang, M., Lee, C., Yokota, T., Jin, H., Jinno, H., Kimura, H., Zalar, P., Matsuhisa, N., Umezu, S., Bazan, G.C., Someya, T.: Ultraflexible near-infrared organic photodetectors for conformal photoplethysmogram sensors. Adv. Mater. 30(34), e1802359(2018)

16 Chow, P.C.Y., Someya, T.: Organic photodetectors for nextgeneration wearable electronics. Adv. Mater. 32(15), e1902045(2020)

17 Wang, C., Zhang, X., Hu, W.: Organic photodiodes and phototransistors toward infrared detection: materials, devices, and applications. Chem. Soc. Rev. 49(3), 653–670(2020)

18 Simone, G., Dyson, M.J., Meskers, S.C.J., Janssen, R.A.J., Gelinck, G.H.: Organic photodetectors and their application in large area and flexible image sensors: the role of dark current. Adv. Funct. Mater. 30(20), 1904205(2020)

19 Ren, H., Chen, J.D., Li, Y.Q., Tang, J.X.: Recent progress in organic photodetectors and their applications. Adv. Sci. (Weinh.) 8(1), 2002418(2021)

20 Yokota, T., Fukuda, K., Someya, T.: Recent progress of flexible image sensors for biomedical applications. Adv. Mater. 33(19), e2004416(2021)

21 Matheus, L.E.M., Vieira, A.B., Vieira, L.F., Vieira, M.A., Gnawali, O.: Visible light communication: concepts, applications and challenges. IEEE Comm. Surv. Tutor. 21(4), 3204–3237(2019)

22 Lau, Y., Zhu, F.: Visualization of near-infrared light and applications. Chin. J. Liq. Crys. Disp. 36(1), 78–104(2021)

23 Naseer, N., Hong, K.S.: fNIRS-based brain-computer interfaces: a review. Front. Hum. Neurosci. 9, 3(2015)

24 Li, N., Eedugurala, N., Azoulay, J.D., Ng, T.N.: A filterless organic photodetector electrically switchable between visible and infrared detection. Cell Rep. Phys. Sci. 3(1), 100711(2022)

25 Zhang, D., Fuentes-Hernandez, C., Vijayan, R., Zhang, Y., Li, Y., Park, J.W., Wang, Y., Zhao, Y., Arora, N., Mirzazadeh, A., Do, Y., Cheng, T., Swaminathan, S., Starner, T., Andrew, T.L., Abowd, G.D.: Flexible computational photodetectors for self-powered activity sensing. NPJ Flex. Electron. 6(1), 1–8(2022)

26 Li, N., Eedugurala, N., Leem, D.S., Azoulay, J.D., Ng, T.N.: Organic upconversion imager with dual electronic and optical readouts for shortwave infrared light detection. Adv. Funct. Mater. 31(16), 2100565(2021)

27 Li, N., Lan, Z., Lau, Y.S., Xie, J., Zhao, D., Zhu, F.: Swir photo-detection and visualization realized by incorporating an organic SWIR sensitive bulk heterojunction. Adv. Sci. (Weinh.) 7(14), 2000444(2020)

28 Du, X., Han, J., He, Z., Han, C., Wang, X., Wang, J., Jiang, Y., Tao, S.: Efficient organic upconversion devices for low energy consumption and high-quality noninvasive imaging. Adv. Mater. 33(42), e2102812(2021)

29 Yang, D., Zhou, X., Ma, D., Vadim, A., Ahamad, T., Alshehri, S.M.: Near infrared to visible light organic up-conversion devices with photon-to-photon conversion efficiency approaching 30%. Mater. Horiz. 5(5), 874–882(2018)

30 Tedde, S., Zaus, E., Furst, J., Henseler, D., Lugli, P.: Active pixel concept combined with organic photodiode for imaging devices. IEEE Electron Device Lett. 28(10), 893–895(2007)

31 Yokota, T., Nakamura, T., Kato, H., Mochizuki, M., Tada, M., Uchida, M., Lee, S., Koizumi, M., Yukita, W., Takimoto, A., Someya, T.: A conformable imager for biometric authentication and vital sign measurement. Nat. Electron. 3(2), 113–121(2020)

32 Zhao, C., Kanicki, J.: Amorphous In-Ga-Zn-O thin-film transistor active pixel sensor X-ray imager for digital breast tomosynthesis. Med. Phys. 41(9), 091902(2014)

33 Hou, X., Chen, S., Tang, W., Liang, J., Ouyang, B., Li, M., Song, Y., Shan, T., Chen, C.C., Too, P., Wei, X., Jin, L., Qi, G., Guo, X.: Low-temperature solution-processed all organic integration for large-area and flexible high-resolution imaging. IEEE J. Electron Devices Soc. 10, 821–826(2022)

34 Gelinck, G.H., Kumar, A., Moet, D., van der Steen, J.L., Shafique, U., Malinowski, P.E., Myny, K., Rand, B.P., Simon, M., Rütten, W., Douglas, A., Jorritsma, J., Heremans, P., Andriessen, R.: X-ray imager using solution processed organic transistor arrays and bulk heterojunction photodiodes on thin, flexible plastic substrate. Org. Electron. 14(10), 2602–2609(2013)

35 Xing, S., Nikolis, V.C., Kublitski, J., Guo, E., Jia, X., Wang, Y., Spoltore, D., Vandewal, K., Kleemann, H., Benduhn, J., Leo, K.: Miniaturized Vis-NIR spectrometers based on narrowband and tunable transmission cavity organic photodetectors with ultra-high specific detectivity above 1014 Jones. Adv. Mater. 33(44), e2102967(2021)

36 Tang, Z., Ma, Z., Sánchez-Díaz, A., Ullbrich, S., Liu, Y., Siegmund, B., Mischok, A., Leo, K., Campoy-Quiles, M., Li, W., Vandewal, K.: Polymer: fullerene bimolecular crystals for near-infrared spectroscopic photodetectors. Adv. Mater. 29(33), 1702184(2017)

37 Chow, C.W., Wang, H.Y., Chen, C.H., Zan, H.W., Yeh, C.H., Meng, H.F.: Pre-distortion scheme to enhance the transmission performance of organic photo-detector (OPD) based visible light communication (VLC). IEEE Access 6, 7625–7630(2018)

38 Li, W., Li, S., Duan, L., Chen, H., Wang, L., Dong, G., Xu, Z.: Squarylium and rubrene based filterless narrowband photodetectors for an all-organic two-channel visible light communication system. Org. Electron. 37, 346–351(2016)

39 Lan, Z., Lau, Y.S., Cai, L., Han, J., Suen, C.W., Zhu, F.: Dualband organic photodetectors for dual-channel optical communications. Laser Photon. Rev. 16(7), 2100602(2022)

40 Strobel, N., Droseros, N., Köntges, W., Seiberlich, M., Pietsch, M., Schlisske, S., Lindheimer, F., Schröder, R.R., Lemmer, U., Pfannmöller, M., Banerji, N., Hernandez-Sosa, G.: Color-selective printed organic photodiodes for filterless multichannel visible light communication. Adv. Mater. 32(12), e1908258(2020)

41 Babics, M., Bristow, H., Zhang, W., Wadsworth, A., Neophytou, M., Gasparini, N., McCulloch, I.: Non-fullerene-based organic photodetectors for infrared communication. J. Mater. Chem. C Mater. Opt. Electron. Devices 9(7), 2375–2380(2021)

42 Lee, S.H., Yusoff, A., Lee, C., Yoon, S.C., Noh, Y.Y.: Toward color-selective printed organic photodetectors for high-resolution image sensors: from fundamentals to potential commercialization. Mater. Sci. Eng. Rep. 147, 100660(2022)

43 Song, J.K., Kim, M.S., Yoo, S., Koo, J.H., Kim, D.H.: Materials and devices for flexible and stretchable photodetectors and light-emitting diodes. Nano Res. 14(9), 2919–2937(2021)

44 Lan, Z., Lee, M.H., Zhu, F.: Recent advances in solution-processable organic photodetectors and applications in flexible electronics. Adv. Intell. Syst. 4(3), 2100167(2022)

45 Li, N., Mahalingavelar, P., Vella, J.H., Leem, D.S., Azoulay, J.D., Ng, T.N.: Solution-processable infrared photodetectors: materials, device physics, and applications. Mater. Sci. Eng. Rep. 146, 100643(2021)

46 Simone, G., Dyson, M.J., Weijtens, C.H.L., Meskers, S.C.J., Coehoorn, R., Janssen, R.A.J., Gelinck, G.H.: On the origin of dark current in organic photodiodes. Adv. Opt. Mater. 8(1), 1901568(2020)

47 Fang, Y., Armin, A., Meredith, P., Huang, J.: Accurate characterization of next-generation thin-film photodetectors. Nat. Photon. 13(1), 1–4(2019)

48 Lee, H., Park, C., Sin, D.H., Park, J.H., Cho, K.: Recent advances in morphology optimization for organic photovoltaics. Adv. Mater. 30(34), e1800453(2018)

49 Gaspar, H., Figueira, F., Pereira, L., Mendes, A., Viana, J.C., Bernardo, G.: Recent developments in the optimization of the bulk heterojunction morphology of polymer: fullerene solar cells. Materials (Basel) 11(12), E2560(2018)

50 Brabec, C.J., Durrant, J.R.: Solution-processed organic solar cells. MRS Bull. 33(7), 670–675(2008)

51 Ma, L., Zhang, S., Wang, J., Xu, Y., Hou, J.: Recent advances in non-fullerene organic solar cells: from lab to fab. Chem. Commun. (Camb.) 56(92), 14337–14352(2020)

52 Dou, L., Liu, Y., Hong, Z., Li, G., Yang, Y.: Low-bandgap near-IR conjugated polymers/molecules for organic electronics. Chem. Rev. 115(23), 12633–12665(2015)

53 Pivrikas, A., Sariciftci, N.S., Juška, G., Österbacka, R.: A review of charge transport and recombination in polymer/fullerene organic solar cells. Prog. Photovolt. Res. Appl. 15(8), 677–696(2007)

54 Ameri, T., Heumüller, T., Min, J., Li, N., Matt, G., Scherf, U., Brabec, C.J.: IR sensitization of an indene-C60 bisadduct (ICBA) in ternary organic solar cells. Energy Environ. Sci. 6(6), 1796–1801 (2013)

55 Zhang, J., Tan, H.S., Guo, X., Facchetti, A., Yan, H.: Material insights and challenges for non-fullerene organic solar cells based on small molecular acceptors. Nat. Energy 3(9), 720–731(2018)

56 Liu, W., Zhang, R., Wei, Q., Zhu, C., Yuan, J., Gao, F., Zou, Y.: Manipulating molecular aggregation and crystalline behavior of A-DA’D-A type acceptors by side chain engineering in organic solar cells. Aggregate 3(3), e183(2022)

57 Zhang, X., Li, G., Mukherjee, S., Huang, W., Zheng, D., Feng, L.W., Chen, Y., Wu, J., Sangwan, V.K., Hersam, M.C., DeLongchamp, D.M., Yu, J., Facchetti, A., Marks, T.J.: Systematically controlling acceptor fluorination optimizes hierarchical morphology, vertical phase separation, and efficiency in non-fullerene organic solar cells. Adv. Energy Mater. 12(1), 2102172(2022)

58 Wang, Z., Zhu, L., Shuai, Z., Wei, Z.: A–π–D–π–A electron-donating small molecules for solution-processed organic solar cells: a review. Macromol. Rapid Commun. 38(22), 1700470(2017)

59 Shan, T., Ding, K., Yu, L., Wang, X., Zhang, Y., Zheng, X., Chen, C.C., Peng, Q., Zhong, H.: Spatially orthogonal 2d sidechains optimize morphology in all-small-molecule organic solar cells. Adv. Funct. Mater. 31(24), 2100750(2021)

60 Li, Y., Chen, H., Zhang, J.: Carrier blocking layer materials and application in organic photodetectors. Nanomaterials (Basel) 11(6), 1404(2021)

61 Lim, S.B., Ji, C.H., Oh, I.S., Oh, S.Y.: Reduced leakage current and improved performance of an organic photodetector using an ytterbium cathode interlayer. J. Mater. Chem. C Mater. Opt. Electron. Devices 4(22), 4920–4926(2016)

62 Bouthinon, B., Clerc, R., Verilhac, J., Racine, B., De Girolamo, J., Jacob, S., Lienhard, P., Joimel, J., Dhez, O., Revaux, A.: On the front and back side quantum efficiency differences in semitransparent organic solar cells and photodiodes. J. Appl. Phys. 123(12), 125501(2018)

63 Sato, Y., Kajii, H., Ohmori, Y.: Improved performance of polymer photodetectors using indium–tin-oxide modified by phosphonic acid-based self-assembled monolayer treatment. Org. Electron. 15(8), 1753–1758(2014)

64 Zhou, Y., Fuentes-Hernandez, C., Shim, J., Meyer, J., Giordano, A.J., Li, H., Winget, P., Papadopoulos, T., Cheun, H., Kim, J., Fenoll, M., Dindar, A., Haske, W., Najafabadi, E., Khan, T.M., Sojoudi, H., Barlow, S., Graham, S., Brédas, J.L., Marder, S.R., Kahn, A., Kippelen, B.: A universal method to produce low-work function electrodes for organic electronics. Science 336(6079), 327–332(2012)

65 He, Z., Zhang, C., Xu, X., Zhang, L., Huang, L., Chen, J., Wu, H., Cao, Y.: Largely enhanced efficiency with a PFN/Al bilayer cathode in high efficiency bulk heterojunction photovoltaic cells with a low bandgap polycarbazole donor. Adv. Mater. 23(27), 3086–3089(2011)

66 Wang, T., Wang, Y., Zhu, L., Lv, L., Hu, Y., Deng, Z., Cui, Q., Lou, Z., Hou, Y., Teng, F.: High sensitivity and fast response sol-gel ZnO electrode buffer layer based organic photodetectors with large linear dynamic range at low operating voltage. Org. Electron. 56, 51–58(2018)

67 Zhu, H.L., Choy, W.C., Sha, W.E., Ren, X.: Photovoltaic mode ultraviolet organic photodetectors with high on/off ratio and fast response. Adv. Opt. Mater. 2(11), 1082–1089(2014)

68 Deng, R., Yan, C., Deng, Y., Hu, Y., Deng, Z., Cui, Q., Lou, Z., Hou, Y., Teng, F.: High-performance polymer photodetector using the non-thermal-and-non-ultraviolet–ozone-treated SnO₂ interfacial layer. Physica Status Solidi (RRL) - Rapid Res. Lett. 14(3), 1900531(2020)

69 Zheng, Z., Wang, J., Bi, P., Ren, J., Wang, Y., Yang, Y., Liu, X., Zhang, S., Hou, J.: Tandem organic solar cell with 20.2% efficiency. Joule 6(1), 171–184(2022)

70 Lu, H., Lin, J., Wu, N., Nie, S., Luo, Q., Ma, C.Q., Cui, Z.: Inkjet printed silver nanowire network as top electrode for semi-transparent organic photovoltaic devices. Appl. Phys. Lett. 106(9), 093302(2015)

71 Baeg, K.J., Binda, M., Natali, D., Caironi, M., Noh, Y.Y.: Organic light detectors: photodiodes and phototransistors. Adv. Mater. 25(31), 4267–4295(2013)

72 Tam, K.C., Kubis, P., Maisch, P., Brabec, C.J., Egelhaaf, H.J.: Fully printed organic solar modules with bottom and top silver nanowire electrodes. Prog. Photovolt. Res. Appl. 30(5), 528–542(2022)

73 Cao, W., Li, J., Chen, H., Xue, J.: Transparent electrodes for organic optoelectronic devices: a review. J. Photon. Energy 4(1), 040990(2014)

74 Kim, D.H., Kim, K.S., Shim, H.S., Moon, C.K., Jin, Y.W., Kim, J.J.: A high performance semitransparent organic photodetector with green color selectivity. Appl. Phys. Lett. 105(21), 213301(2014)

75 Kim, H., Lee, K.T., Zhao, C., Guo, L.J., Kanicki, J.: Top illuminated organic photodetectors with dielectric/metal/dielectric transparent anode. Org. Electron. 20, 103–111(2015)

76 Zhang, H., Jenatsch, S., De Jonghe, J., Nüesch, F., Steim, R., Véron, A.C., Hany, R.: Transparent organic photodetector using a near-infrared absorbing cyanine dye. Sci. Rep. 5(1), 9439(2015)

77 Qi, Z., Cao, J., Ding, L., Wang, J.: Transparent and transferrable organic optoelectronic devices based on WO₃/Ag/WO₃ electrodes. Appl. Phys. Lett. 106(5), 053304(2015)

78 Lee, D., So, S., Hu, G., Kim, M., Badloe, T., Cho, H., Kim, J., Kim, H., Qiu, C.-W., Rho, J.: Hyperbolic metamaterials: fusing artificial structures to natural 2D materials. eLight 2(1), 1–23(2022)

79 Shan, T., Zhang, Y., Wang, Y., Xie, Z., Wei, Q., Xu, J., Zhang, M., Wang, C., Bao, Q., Wang, X., Chen, C.C., Huang, J., Chen, Q., Liu, F., Chen, L., Zhong, H.: Universal and versatile morphology engineering via hot fluorous solvent soaking for organic bulk heterojunction. Nat. Commun. 11(1), 5585(2020)

80 Luo, D., Zhang, Y., Li, L., Shan, C., Liu, Q., Wang, Z., Choy, W.C., Kyaw, A.K.K.: Near-infrared non-fused ring acceptors with light absorption up to 1000 nm for efficient and low-energy loss organic solar cells. Mater. Today Energy 24, 100938(2022)

81 Li, Y., Huang, W., Zhao, D., Wang, L., Jiao, Z., Huang, Q., Wang, P., Sun, M., Yuan, G.: Recent progress in organic solar cells: a review on materials from acceptor to donor. Molecules 27(6), 1800(2022)

82 Wang, Z., Peng, Z., Xiao, Z., Seyitliyev, D., Gundogdu, K., Ding, L., Ade, H.: Thermodynamic properties and molecular packing explain performance and processing procedures of three D18:NFA organic solar cells. Adv. Mater. 32(49), e2005386(2020)

83 Wei, Q., Yuan, J., Yi, Y., Zhang, C., Zou, Y.: Y6 and its derivatives: molecular design and physical mechanism. Natl. Sci. Rev. 8(8), nwa121(2021)

84 Yuan, J., Zhang, Y., Zhou, L., Zhang, G., Yip, H.L., Lau, T.K., Lu, X., Zhu, C., Peng, H., Johnson, P.A., Leclerc, M., Cao, Y., Ulanski, J., Li, Y., Zou, Y.: Single-junction organic solar cell with over 15% efficiency using fused-ring acceptor with electrondeficient core. Joule 3(4), 1140–1151(2019)

85 Park, B., Jung, J., Lim, D.H., Lee, H., Park, S., Kyeong, M., Ko, S.J., Eom, S.H., Lee, S.H., Lee, C., Yoon, S.C.: Significant dark current suppression in organic photodetectors using side chain fluorination of conjugated polymer. Adv. Funct. Mater. 32(4), 2108026(2022)

86 Zhang, D., Zhao, D., Wang, Z., Yu, J.: Processes controlling the distribution of vertical organic composition in organic photodetectors by ultrasonic-assisted solvent vapor annealing. ACS Appl. Electron. Mater. 2(7), 2188–2195(2020)

87 Biele, M., Montenegro Benavides, C., Hürdler, J., Tedde, S.F., Brabec, C.J., Schmidt, O.: Spray-coated organic photodetectors and image sensors with silicon-like performance. Adv. Mater. Technol. 4(1), 1800158(2019)

88 Huang, J., Lee, J., Vollbrecht, J., Brus, V.V., Dixon, A.L., Cao, D.X., Zhu, Z., Du, Z., Wang, H., Cho, K., Bazan, G.C., Nguyen, T.Q.: A high-performance solution-processed organic photodetector for near-infrared sensing. Adv. Mater. 32(1), e1906027(2020)

89 Xu, Y., Yuan, J., Liang, S., Chen, J.D., Xia, Y., Larson, B.W., Wang, Y., Su, G.M., Zhang, Y., Cui, C., Wang, M., Zhao, H., Ma, W.: Simultaneously improved efficiency and stability in all-polymer solar cells by a p–i–n architecture. ACS Energy Lett. 4(9), 2277–2286(2019)

90 Shan, T., Hong, Y., Zhu, L., Wang, X., Zhang, Y., Ding, K., Liu, F., Chen, C.C., Zhong, H.: Achieving optimal bulk hetero-junction in all-polymer solar cells by sequential processing with nonorthogonal solvents. ACS Appl. Mater. Interfaces 11(45), 42438–42446(2019)

91 Kim, M.S., Jang, W., Nguyen, T.Q., Wang, D.H.: Morphology inversion of a non-fullerene acceptor via adhesion controlled decal-coating for efficient conversion and detection in organic electronics. Adv. Funct. Mater. 31(38), 2103705(2021)

92 Zhong, Z., Bu, L., Zhu, P., Xiao, T., Fan, B., Ying, L., Lu, G., Yu, G., Huang, F., Cao, Y.: Dark current reduction strategy via a layer-by-layer solution process for a high-performance all-polymer photodetector. ACS Appl. Mater. Interfaces 11(8), 8350–8356(2019)

93 Sun, R., Guo, J., Sun, C., Wang, T., Luo, Z., Zhang, Z., Jiao, X., Tang, W., Yang, C., Li, Y., Min, J.: A universal layer-by-layer solution-processing approach for efficient non-fullerene organic solar cells. Energy Environ. Sci. 12(1), 384–395(2019)

94 Wei, Y., Chen, H., Liu, T., Wang, S., Jiang, Y., Song, Y., Zhang, J., Zhang, X., Lu, G., Huang, F., Wei, Z., Huang, H.: Self-powered organic photodetectors with high detectivity for near infrared light detection enabled by dark current reduction. Adv. Funct. Mater. 31(52), 2106326(2021)

95 Xiong, S., Li, J., Peng, J., Dong, X., Qin, F., Wang, W., Sun, L., Xu, Y., Lin, Q., Zhou, Y.: Water transfer printing of multi-layered near-infrared organic photodetectors. Adv. Opt. Mater. 10(1), 2101837(2022)

96 Huang, Z., Zhong, Z., Peng, F., Ying, L., Yu, G., Huang, F., Cao, Y.: Copper thiocyanate as an anode interfacial layer for efficient near-infrared organic photodetector. ACS Appl. Mater. Interfaces 13(1), 1027–1034(2021)

97 Xu, X., Zhou, X., Zhou, K., Xia, Y., Ma, W., Inganäs, O.: Largearea, semitransparent, and flexible all-polymer photodetectors. Adv. Funct. Mater. 28(48), 1805570(2018)

98 Saracco, E., Bouthinon, B., Verilhac, J.M., Celle, C., Chevalier, N., Mariolle, D., Dhez, O., Simonato, J.P.: Work function tuning for high-performance solution-processed organic photodetectors with inverted structure. Adv. Mater. 25(45), 6534–6538(2013)

99 Binda, M., Iacchetti, A., Natali, D., Beverina, L., Sassi, M., Sampietro, M.: High detectivity squaraine-based near infrared photodetector with NA/cm² dark current. Appl. Phys. Lett. 98(7), 073303(2011)

100 Zhou, X., Yang, D., Ma, D.: Extremely low dark current, high responsivity, all-polymer photodetectors with spectral response from 300 nm to 1000 nm. Adv. Opt. Mater. 3(11), 1570–1576(2015)

101 Benavides, C.M., Murto, P., Chochos, C.L., Gregoriou, V.G., Avgeropoulos, A., Xu, X., Bini, K., Sharma, A., Andersson, M.R., Schmidt, O., Brabec, C.J., Wang, E., Tedde, S.F.: High-performance organic photodetectors from a high-bandgap indacenodithiophene-based π-conjugated donor-acceptor polymer. ACS Appl. Mater. Interfaces 10(15), 12937–12946(2018)

102 Sim, K.M., Yoon, S., Kim, S.K., Ko, H., Hassan, S.Z., Chung, D.S.: Surfactant-induced solubility control to realize water-processed high-precision patterning of polymeric semiconductors for full color organic image sensor. ACS Nano 14(1), 415–421(2020)

103 Lan, Z., Zhu, F.: Electrically switchable color-selective organic photodetectors for full-color imaging. ACS Nano 15(8), 13674–13682(2021)

104 Yang, J., Huang, J., Li, R., Li, H., Sun, B., Lin, Q., Wang, M., Ma, Z., Vandewal, K., Tang, Z.: Cavity-enhanced near-infrared organic photodetectors based on a conjugated polymer containing [1,2,5]selenadiazolo[3,4-c]pyridine. Chem. Mater. 33(13), 5147–5155(2021)

105 Lan, Z., Lau, Y.S., Wang, Y., Xiao, Z., Ding, L., Luo, D., Zhu, F.: Filter-free band-selective organic photodetectors. Adv. Opt. Mater. 8(24), 2001388(2020)

106 Vanderspikken, J., Maes, W., Vandewal, K.: Wavelength-selective organic photodetectors. Adv. Funct. Mater. 31(36), 2104060(2021)

107 Schembri, T., Kim, J.H., Liess, A., Stepanenko, V., Stolte, M., Würthner, F.: Semitransparent layers of social self-sorting merocyanine dyes for ultranarrow bandwidth organic photodiodes. Adv. Opt. Mater. 9(15), 2100213(2021)

108 Wang, Y., Kublitski, J., Xing, S., Dollinger, F., Spoltore, D., Benduhn, J., Leo, K.: Narrowband organic photodetectors-towards miniaturized, spectroscopic sensing. Mater. Horiz. 9(1), 220–251(2022)

109 Armin, A., Jansen-van Vuuren, R.D., Kopidakis, N., Burn, P.L., Meredith, P.: Narrowband light detection via internal quantum efficiency manipulation of organic photodiodes. Nat. Commun. 6(1), 6343(2015)

110 Wang, W., Zhang, F., Du, M., Li, L., Zhang, M., Wang, K., Wang, Y., Hu, B., Fang, Y., Huang, J.: Highly narrowband photomultiplication type organic photodetectors. Nano Lett. 17(3), 1995–2002(2017)

111 Xie, B., Xie, R., Zhang, K., Yin, Q., Hu, Z., Yu, G., Huang, F., Cao, Y.: Self-filtering narrowband high performance organic photodetectors enabled by manipulating localized Frenkel exciton dissociation. Nat. Commun. 11(1), 2871(2020)

112 Xing, S., Wang, X., Guo, E., Kleemann, H., Leo, K.: Organic thin-film red-light photodiodes with tunable spectral response via selective exciton activation. ACS Appl. Mater. Interfaces 12(11), 13061–13067(2020)

113 Wang, C., Zhang, C., Chen, Q., Chen, L.: Improving the photomultiplication in organic photodetectors with narrowband response by interfacial engineering. Acta Chim. Sin. 79(8), 1030–1036(2021)

114 Ünlü, M.S., Strite, S.: Resonant cavity enhanced photonic devices. J. Appl. Phys. 78(2), 607–639(1995)

115 Xiong, J., Wu, S.-T.: Planar liquid crystal polarization optics for augmented reality and virtual reality: From fundamentals to applications. eLight 1(3), 1–20(2021)

116 Du, Y., Zou, C.L., Zhang, C., Wang, K., Qiao, C., Yao, J., Zhao, Y.S.: Tuneable red, green, and blue single-mode lasing in heterogeneously coupled organic spherical microcavities. Light Sci. Appl. 9(1), 151(2020)

117 Zang, C., Liu, S., Xu, M., Wang, R., Cao, C., Zhu, Z., Zhang, J., Wang, H., Zhang, L., Xie, W., Lee, C.S.: Top-emitting thermally activated delayed fluorescence organic light-emitting devices with weak light-matter coupling. Light Sci. Appl. 10(1), 116(2021)

118 Zhao, Z., Xu, C., Ma, Y., Yang, K., Liu, M., Zhu, X., Zhou, Z., Shen, L., Yuan, G., Zhang, F.: Ultraviolet narrowband photomultiplication type organic photodetectors with Fabry–Pérot resonator architecture. Adv. Funct. Mater. 32(29), 2203606(2022)

119 Wang, J., Ullbrich, S., Hou, J.L., Spoltore, D., Wang, Q., Ma, Z., Tang, Z., Vandewal, K.: Organic cavity photodetectors based on nanometer-thick active layers for tunable monochromatic spectral response. ACS Photon. 6(6), 1393–1399(2019)

120 Siegmund, B., Mischok, A., Benduhn, J., Zeika, O., Ullbrich, S., Nehm, F., Böhm, M., Spoltore, D., Fröb, H., Körner, C., Leo, K., Vandewal, K.: Organic narrowband near-infrared photodetectors based on intermolecular charge-transfer absorption. Nat. Commun. 8(1), 15421(2017)

121 Kublitski, J., Fischer, A., Xing, S., Baisinger, L., Bittrich, E., Spoltore, D., Benduhn, J., Vandewal, K., Leo, K.: Enhancing sub-bandgap external quantum efficiency by photomultiplication for narrowband organic near-infrared photodetectors. Nat. Commun. 12(1), 4259(2021)

122 Wang, Y., Siegmund, B., Tang, Z., Ma, Z., Kublitski, J., Xing, S., Nikolis, V.C., Ullbrich, S., Li, Y., Benduhn, J., Spoltore, D., Vandewal, K., Leo, K.: Stacked dual-wavelength near-infrared organic photodetectors. Adv. Opt. Mater. 9(6), 2001784(2021)

123 Suganuma, N., Heo, C.J., Minami, D., Yun, S., Park, S., Lim, Y., Fang, F., Choi, B., Park, K.B.: High speed response organic photodetectors with cascade buffer layers. Adv. Electron. Mater. 8(2), 2100539(2022)

124 Saggar, S., Sanderson, S., Gedefaw, D., Pan, X., Philippa, B., Andersson, M.R., Lo, S.C., Namdas, E.B.: Toward faster organic photodiodes: tuning of blend composition ratio. Adv. Funct. Mater. 31(19), 2010661(2021)

125 Salamandra, L., La Notte, L., Fazolo, C., Di Natali, M., Penna, S., Mattiello, L., Cinà, L., Del Duca, R., Reale, A.: A comparative study of organic photodetectors based on P3HT and PTB7 polymers for visible light communication. Org. Electron. 81, 105666(2020)

126 Liu, J., Jiang, J., Wang, S., Li, T., Jing, X., Liu, Y., Wang, Y., Wen, H., Yao, M., Zhan, X., Shen, L.: Fast response organic tandem photodetector for visible and near-infrared digital optical communications. Small 17(43), e2101316(2021)

127 Shen, L., Fang, Y., Wang, D., Bai, Y., Deng, Y., Wang, M., Lu, Y., Huang, J.: A self-powered, sub-nanosecond-response solution- processed hybrid perovskite photodetector for time-resolved photoluminescence-lifetime detection. Adv. Mater. 28(48), 10794–10800(2016)

128 Wang, X., Wang, J., Zhao, H., Jin, H., Yu, J.: Detectivity enhancement of double-layer organic photodetectors consisting of solution-processed interconnecting layers. Mater. Lett. 243, 81–83(2019)

129 Xing, S., Kublitski, J., Hänisch, C., Winkler, L.C., Li, T.Y., Kleemann, H., Benduhn, J., Leo, K.: Photomultiplication-type organic photodetectors for near-infrared sensing with high and bias-independent specific detectivity. Adv. Sci. (Weinh.) 9(7), e2105113(2022)

130 Shi, L., Liang, Q., Wang, W., Zhang, Y., Li, G., Ji, T., Hao, Y., Cui, Y.: Research progress in organic photomultiplication photodetectors. Nanomaterials (Basel) 8(9), 713(2018)

131 Yan, Y., Wu, X., Chen, Q., Liu, Y., Chen, H., Guo, T.: High-performance low-voltage flexible photodetector arrays based on all-solid-state organic electrochemical transistors for photosensing and imaging. ACS Appl. Mater. Interfaces 11(22), 20214–20224(2019)

132 Lv, L., Dang, W., Wu, X., Chen, H., Wang, T., Qin, L., Wei, Z., Zhang, K., Shen, G., Huang, H.: Flexible short-wave infrared image sensors enabled by high-performance polymeric photo-detectors. Macromolecules 53(23), 10636–10643(2020)

133 Webster, J.G.: Design of pulse oximeters. CRC Press, Boca Raton (1997)

134 Lochner, C.M., Khan, Y., Pierre, A., Arias, A.C.: All-organic optoelectronic sensor for pulse oximetry. Nat. Commun. 5(1), 5745(2014)

135 Khan, Y., Han, D., Pierre, A., Ting, J., Wang, X., Lochner, C.M., Bovo, G., Yaacobi-Gross, N., Newsome, C., Wilson, R., Arias, A.C.: A flexible organic reflectance oximeter array. Proc. Natl. Acad. Sci. U.S.A. 115(47), E11015–E11024(2018)

136 Eun, H.J., Lee, H., Shim, Y., Seo, G.U., Lee, A.Y., Park, J.J., Heo, J., Park, S., Kim, J.H.: Strain-durable dark current in near-infrared organic photodetectors for skin-conformal photoplethysmographic sensors. iScience 25(5), 104194(2022)

137 Pan, T., Liu, S., Zhang, L., Xie, W., Yu, C.: A flexible, multi-functional, optoelectronic anticounterfeiting device from high-performance organic light-emitting paper. Light Sci. Appl. 11(1), 59(2022)

138 Yokota, T., Zalar, P., Kaltenbrunner, M., Jinno, H., Matsuhisa, N., Kitanosako, H., Tachibana, Y., Yukita, W., Koizumi, M., Someya, T.: Ultraflexible organic photonic skin. Sci. Adv. 2(4), e1501856(2016)

139 Khan, Y., Han, D., Ting, J., Ahmed, M., Nagisetty, R., Arias, A.C.: Organic multi-channel optoelectronic sensors for wearable health monitoring. IEEE Access 7, 128114–128124(2019)

140 Lee, H., Kim, E., Lee, Y., Kim, H., Lee, J., Kim, M., Yoo, H.J., Yoo, S.: Toward all-day wearable health monitoring: an ultralow-power, reflective organic pulse oximetry sensing patch. Sci. Adv. 4(11), eaas9530(2018)

141 Park, Y., Fuentes-Hernandez, C., Kim, K., Chou, W.F., Larrain, F.A., Graham, S., Pierron, O.N., Kippelen, B.: Skin-like low-noise elastomeric organic photodiodes. Sci. Adv. 7(51), eabj6565(2021)

142 Pierre, A., Arias, A.C.: Solution-processed image sensors on flexible substrates. Flex. Print. Electron. 1(4), 043001(2016)

143 Hou, X., Tang, W., Chen, S., Liang, J., Xu, H., Ouyang, B., Li, M., Song, Y., Chen, C.C., Too, P., Wei, X., Jin, L., Qi, G., Guo, X.: Large area and flexible organic active matrix image sensor array fabricated by solution coating processes at low temperature. In: Proceedings of 5th IEEE Electron Devices Technology & Manufacturing Conference (EDTM). IEEE, 1–3(2021).

144 Wu, Y.L., Fukuda, K., Yokota, T., Someya, T.: A highly responsive organic image sensor based on a two-terminal organic photodetector with photomultiplication. Adv. Mater. 31(43), e1903687(2019)

145 Tordera, D., van Breemen, A., Kronemeijer, A., van der Steen, J.L., Peeters, B., Shanmugan, S., Akkerman, H., Gelinck, G.: Flexible and large-area imagers using organic photodetectors. In: Organic Flexible Electronics, pp 575–597. Elsevier, Amsterdam (2021).

146 Yang, W., Qiu, W., Georgitzikis, E., Simoen, E., Serron, J., Lee, J., Lieberman, I., Cheyns, D., Malinowski, P., Genoe, J., Chen, H., Heremans, P.: Mitigating dark current for high-performance near-infrared organic photodiodes via charge blocking and defect passivation. ACS Appl. Mater. Interfaces 13(14), 16766–16774(2021)

147 Han, M.G., Park, K.B., Bulliard, X., Lee, G.H., Yun, S., Leem, D.S., Heo, C.J., Yagi, T., Sakurai, R., Ro, T., Lim, S.J., Sul, S., Na, K., Ahn, J., Jin, Y.W., Lee, S.: Narrow-band organic photo-diodes for high-resolution imaging. ACS Appl. Mater. Interfaces 8(39), 26143–26151(2016)

148 Sakai, T., Takagi, T., Imamura, K., Mineo, K., Yakushiji, H., Hashimoto, Y., Aotake, T., Sadamitsu, Y., Sato, H., Aihara, S.: Color-filter-free three-layer-stacked image sensor using blue/green-selective organic photoconductive films with thin-film transistor circuits on CMOS image sensors. ACS Appl. Electron. Mater. 3(7), 3085–3095(2021)

149 Li, Y., Luo, H., Mao, L., Yu, L., Li, X., Jin, L., Zhang, J.: A solution-processed hole-transporting layer based on p-type CUCRO2 for organic photodetector and image sensor. Adv. Mater. Interfaces 8(20), 2100801(2021)

150 Baierl, D., Pancheri, L., Schmidt, M., Stoppa, D., Dalla Betta, G.F., Scarpa, G., Lugli, P.: A hybrid CMOS-imager with a solution-processable polymer as photoactive layer. Nat. Commun. 3(1), 1175(2012)

151 Shekhar, H., Fenigstein, A., Leitner, T., Lavi, B., Veinger, D., Tessler, N.: Hybrid image sensor of small molecule organic photodiode on CMOS-integration and characterization. Sci. Rep. 10(1), 7594(2020)

152 Wu, P., Ye, L., Tong, L., Wang, P., Wang, Y., Wang, H., Ge, H., Wang, Z., Gu, Y., Zhang, K., Yu, Y., Peng, M., Wang, F., Huang, M., Zhou, P., Hu, W.: Van der Waals two-color infrared photodetector. Light Sci. Appl. 11(1), 6(2022)

153 Dehzangi, A., Li, J., Razeghi, M.: Band-structure-engineered high-gain LWIR photodetector based on a type-II superlattice. Light Sci. Appl. 10(1), 17(2021)

154 Feng, Z., Tang, T., Wu, T., Yu, X., Zhang, Y., Wang, M., Zheng, J., Ying, Y., Chen, S., Zhou, J., Fan, X., Zhang, D., Li, S., Zhang, M., Qian, J.: Perfecting and extending the near-infrared imaging window. Light Sci. Appl. 10(1), 197(2021)

155 Li, C., Wang, H., Wang, F., Li, T., Xu, M., Wang, H., Wang, Z., Zhan, X., Hu, W., Shen, L.: Ultrafast and broadband photodetectors based on a perovskite/organic bulk heterojunction for large-dynamic-range imaging. Light Sci. Appl. 9(1), 31(2020)

156 Seo, H., Aihara, S., Watabe, T., Ohtake, H., Kubota, M., Egami, N.: Color sensors with three vertically stacked organic photodetectors. Jpn. J. Appl. Phys. 46(49), L1240–L1242(2007)

157 Lim, S.J., Leem, D.S., Park, K.B., Kim, K.S., Sul, S., Na, K., Lee, G.H., Heo, C.J., Lee, K.H., Bulliard, X., Satoh, R., Yagi, T., Ro, T., Im, D., Jung, J., Lee, M., Lee, T.Y., Han, M.G., Jin, Y.W., Lee, S.: Organic-on-silicon complementary metal-oxide-semiconductor colour image sensors. Sci. Rep. 5(1), 7708(2015)

158 Sato, S., Yamashita, T., Miyazaki, M.: UHD-2/8K camera recorder using organic cmos image sensor. SMPTE Motion Imaging J. 129(6), 52–60(2020)

159 Lim, Y., Yun, S., Minami, D., Choi, T., Choi, H., Shin, J., Heo, C.J., Leem, D.S., Yagi, T., Park, K.B., Kim, S.: Green-light-selective organic photodiodes with high detectivity for CMOS color image sensors. ACS Appl. Mater. Interfaces 12(46), 51688–51698(2020)

160 Banach, M., Markham, S., Agaiby, R., Too, P.: Low leakage organic backplanes for high pixel density optical sensors. SID Symp. Digest Tech. Papers 49(1), 90–91(2018)

161 Tordera, D., Peeters, B., Akkerman, H.B., Breemen, A.J.J.M., Maas, J., Shanmugam, S., Kronemeijer, A.J., Gelinck, G.H.: A high-resolution thin-film fingerprint sensor using a printed organic photodetector. Adv. Mater. Technol. 4(11), 1900651(2019)

162 Kamada, T., Hatsumi, R., Watanabe, K., Kawashima, S., Katayama, M., Adachi, H., Ishitani, T., Kusunoki, K., Kubota, D., Yamazaki, S.: OLED display incorporating organic photodiodes for fingerprint imaging. J. Soc. Inf. Disp. 27(6), 361–371(2019)

163 Xu, Y., Ruan, C., Zhou, L., Zou, J., Xu, M., Wu, W., Wang, L., Peng, J.A.: 256 × 256 50-µm pixel pitch OPD image sensor based on an IZO TFT backplane. IEEE Sens. J. 21(18), 20824–20832(2021)

164 Eckstein, R., Strobel, N., Rödlmeier, T., Glaser, K., Lemmer, U., Hernandez-Sosa, G.: Fully digitally printed image sensor based on organic photodiodes. Adv. Opt. Mater. 6(5), 1701108(2018)

165 Posar, J.A., Davis, J., Alnaghy, S., Wilkinson, D., Cottam, S., Lee, D.M., Thompson, K.L., Holmes, N.P., Barr, M., Fahy, A., Nicolaidis, N.C., Louie, F., Fraboni, B., Sellin, P.J., Lerch, M.L.F., Rosenfeld, A.B., Petasecca, M., Griffith, M.J.: Polymer photodetectors for printable, flexible, and fully tissue equivalent X-ray detection with zero-bias operation and ultrafast temporal responses. Adv. Mater. Technol. 6(9), 2001298(2021)

166 van Breemen, A.J.J.M., Simon, M., Tousignant, O., Shanmugam, S., van der Steen, J.-L., Akkerman, H.B., Kronemeijer, A., Ruetten, W., Raaijmakers, R., Alving, L., Jacobs, J., Malinowski, P.E., De Roose, F., Gelinck, G.H.: Curved digital X-ray detectors. NPJ Flex. Electron. 4(1), 1–8(2020)

167 Li, A., Yao, C., Xia, J., Wang, H., Cheng, Q., Penty, R., Fainman, Y., Pan, S.: Advances in cost-effective integrated spectrometers. Light Sci. Appl. 11(1), 174(2022)

168 Yang, Z., Albrow-Owen, T., Cai, W., Hasan, T.: Miniaturization of optical spectrometers. Science 371(6528), eabe0722(2021)

169 Vega-Colado, C., Arredondo, B., Torres, J.C., López-Fraguas, E., Vergaz, R., Martín-Martín, D., Del Pozo, G., Romero, B., Apilo, P., Quintana, X., Geday, M.A., De Dios, C., Sánchez-Pena, J.M.: An all-organic flexible visible light communication system. Sensors (Basel) 18(9), 3045(2018)

170 Haigh, P.A., Ghassemlooy, Z., Le Minh, H., Rajbhandari, S., Arca, F., Tedde, S.F., Hayden, O., Papakonstantinou, I.: Exploiting equalization techniques for improving data rates in organic optoelectronic devices for visible light communications. J. Lightwave Technol. 30(19), 3081–3088(2012)

171 Dong, Y., Shi, M., Yang, X., Zeng, P., Gong, J., Zheng, S., Zhang, M., Liang, R., Ou, Q., Chi, N., Zhang, S.: Nanopatterned luminescent concentrators for visible light communications. Opt. Express 25(18), 21926–21934(2017)

172 Cao, J., Shan, T., Wang, J.K., Xu, Y.X., Ren, X., Zhong, H.: Stereoisomerism of ladder-type acceptor molecules and its effect on photovoltaic properties. Dyes Pigments 165, 354–360(2019)

173 Chi, N., Hu, F., Zhou, Y.: The challenges and prospects of high-speed visible light communication technology. ZTE Technol. J. 25(5), 56–61(2019)

174 Li, L., Zhao, H., Liu, C., Li, L., Cui, T.J.: Intelligent metasurfaces: control, communication and computing. eLight 2(7), 1–24(2022)

175 Tavakkolnia, I., Jagadamma, L.K., Bian, R., Manousiadis, P.P., Videv, S., Turnbull, G.A., Samuel, I.D.W., Haas, H.: Organic photovoltaics for simultaneous energy harvesting and high-speed MIMO optical wireless communications. Light Sci. Appl. 10(1), 41(2021)

176 Ghassemlooy, Z., Haigh, P.A., Arca, F., Tedde, S.F., Hayden, O., Papakonstantinou, I., Rajbhandari, S.: Visible light communications: 375 Mbits/s data rate with a 160 kHz bandwidth organic photodetector and artificial neural network equalization. Photon. Res. 1(2), 65(2013)