Determination of bandgaps of photoactive materials in perovskite solar cells at high temperatures by in-situ temperature-dependent resistance measurement

Abstract

Normally, it is difficult to directly measure the bandgaps of perovskite based on methylammonium (MA) or formamidinium (FA) at high temperatures due to material decomposition. We prevent the decomposition by keeping the synthesized perovskite films (MAPbI3 and MAPbI₃) in organic iodide vapors, then measure the in-situ resistance of the films at varied temperatures, and further evaluate the bandgaps of these two materials. The evaluated bandgaps are consistent with the results from ultraviolet-visible (UV-vis) absorption spectrum. The bandgap of MAPbI₃ decreases with temperature above 95 °C, whereas that of FAPbI₃ first increases with temperature from 95 °C to 107 °C and then decreases with temperature above 107 °C.

References

[1] KojimaA., TeshimaK., ShiraiY., MiyasakaT.. Novel Photoelectrochemical Cell with Mesoscopic Electrodes Sensitized by Lead-Halide Compounds (II), 2006, 7

[2] LiX., BiD., YiC., DecoppetJ.-D., LuoJ., ZakeeruddinS. M., HagfeldtA., GratzelM.. Science, 2016, 353: 58

[3] PolmanA., KnightM., GarnettE. C., EhrlerB., SinkeW. C.. Science, 2016, 352: aad4424

[4] LiF., DangX., ZhangL., LiuF., SunD., HeQ., LiC., LiB., ZhuH.. Optoelectronics Letters, 2014, 10: 266

[5] LuG., WangB., GeY. W.. Optoelectronics Letters, 2015, 11: 348

[6] MilotR. L., EperonG. E., SnaithH. J., JohnstonM. B., HerzL. M.. Advanced Functional Materials, 2015, 25: 6218

[7] YamadaY., NakamuraT., EndoM., WakamiyaA., KanemitsuY.. Applied Physics Express, 2014, 7: 032302

[8] FoleyB. J., MarloweD. L., SunK., SaidiW. A., ScudieroL., GuptaM. C., ChoiJ. J.. Applied Physics Letters, 2015, 106: 243904

[9] FangH., WangF., AdjokatseS., ZhaoN., EvenJ., LoiM. A.. Light: Science & Applications, 2016, 5: e16056

[10] ChenX., CaoH., YuH., ZhuH., ZhouH., YangL., YinS.. Journal of Materials Chemistry A, 2016, 4: 9124

[11] AshcroftN. W., MerminN. D.. Solid State Physics, 1976, Orlando, Harcourt College

[12] PonponJ. P., AmannM.. Crystal Research & Technology, 2007, 42: 253

[13] HaoF., StoumposC. C., ChangR. P. H., KanatzidisM. G.. Journal of American Chemical Society, 2014, 136: 8094

[14] ZhangW., SalibaM., StranksS. D., SunY., ShiX., WiesnerU., SnaithH. J.. Nano Letters, 2013, 13: 4505

[15] DittrichT., AwinoC., PrajongtatP., RechB., Lux-SteinerM. C.. Journal of Physical Chemistry C, 2015, 119: 23968

[16] MiyataA., MitiogluA., PlochockaP., PortugallO., WangJ. T.-W., StranksS. D., SnaithH. J., NicholasR. J.. Nature Physics, 2015, 11: 582

[17] TanakaK., TakahashiT., BanT., KondoT., UchidaK., MiuraN.. Solid State Communications, 2003, 127: 619

[18] StoumposC. C., MalliakasC. D., KanatzidisM. G.. Inorganic Chemistry, 2013, 52: 9019

[19] EperonG. E., StranksS. D., MenelaouC., JohnstonM. B., HerzL. M., SnaithH. J.. Energy Environmental Science, 2014, 7: 982

[20] O’DonnellK. P., ChenX.. Applied Physics Letters, 1991, 58: 2924

Just Accepted

This article has successfully passed peer review and final editorial review, and will soon enter typesetting, proofreading and other publishing processes. The currently displayed version is the accepted final manuscript. The officially published version will be updated with format, DOI and citation information upon launch. We recommend that you pay attention to subsequent journal notifications and preferentially cite the officially published version. Thank you for your support and cooperation.