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Frontiers of Optoelectronics

Front Optoelec Chin    2011, Vol. 4 Issue (1) : 45-52     DOI: 10.1007/s12200-011-0208-z
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Electrolyte-dependent photovoltaic responses in dye-sensitized solar cells
Hong LIN(), Feng HAO, Jianbao LI
State Key Laboratory of New Ceramics & Fine Processing, Department of Material Science and Engineering, Tsinghua University, Beijing 100084, China
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Abstract

Promoted by the growing concerns about the worldwide energy demand and global warming, dye-sensitized solar cells (DSSCs) are currently attracting worldwide scientific and technological interest because of their high energy conversion efficiency and simple fabrication process. Considering long-terms stability and practice applications, growing attentions have been paid to non-volatile, 3-methoxyproprionitrile (MPN)-based electrolyte, ionic liquids (ILs) electrolyte, as well as quasi-solid state electrolyte. In this present review, recent progress in electrolyte for DSSCs made by our group are summarized, including component-optimization of the non-volatile electrolyte, the fluidity-dependent charge transport mechanism in the binary IL electrolytes as well as the structure dominance of the employed ILs. Furthermore, progress on the quasi-solid state electrolyte based on inorganic nanomaterials as gelators in our group has also been outlined.

Keywords electrolyte      non-volatile      ionic liquid (IL)      quasi-solid state      dye-sensitized solar cell (DSSC)     
Corresponding Authors: LIN Hong,Email:Hong-lin@tsinghua.edu.cn   
Issue Date: 05 March 2011
 Cite this article:   
Hong LIN,Feng HAO,Jianbao LI. Electrolyte-dependent photovoltaic responses in dye-sensitized solar cells[J]. Front Optoelec Chin, 2011, 4(1): 45-52.
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http://journal.hep.com.cn/foe/EN/10.1007/s12200-011-0208-z
http://journal.hep.com.cn/foe/EN/Y2011/V4/I1/45
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Hong LIN
Feng HAO
Jianbao LI
Fig.1  Dependency of (a), (b), (c), and (d) on concentration of iodine in non-volatile electrolyte
Fig.1  Dependency of (a), (b), (c), and (d) on concentration of iodine in non-volatile electrolyte
Fig.2  Characteristic parameters of impedance spectra of DSSCs with various iodine concentrations in dark at applied forward bias of - 0.75 V. (a) shows , , and ; (b) depicts and
Fig.2  Characteristic parameters of impedance spectra of DSSCs with various iodine concentrations in dark at applied forward bias of - 0.75 V. (a) shows , , and ; (b) depicts and
Fig.3  Dependence of limiting current density and apparent diffusion coefficient on EMIDCA volume fraction in binary IL electrolyte
Fig.3  Dependence of limiting current density and apparent diffusion coefficient on EMIDCA volume fraction in binary IL electrolyte
Fig.4  - characteristics of devices A-E with various EMIDCA/PMII binary IL electrolytes measured under AM 1.5 illumination (100mW·cm)
Fig.4  - characteristics of devices A-E with various EMIDCA/PMII binary IL electrolytes measured under AM 1.5 illumination (100mW·cm)
Fig.5  Structure, viscosity and ionic conductivity (measured at 298 K) of various RTILs employed
Fig.5  Structure, viscosity and ionic conductivity (measured at 298 K) of various RTILs employed
Fig.6  Nyquist plots of devices with various RTIL electrlytes measured in dark at applied forward bias of - 0.65 V
Fig.6  Nyquist plots of devices with various RTIL electrlytes measured in dark at applied forward bias of - 0.65 V
Fig.7  (a) Molecular structure of MPIDP; (b) molecular structure of layered α-ZrP; (c) intercalation schematic of TBP into layered α-ZrP
Fig.7  (a) Molecular structure of MPIDP; (b) molecular structure of layered α-ZrP; (c) intercalation schematic of TBP into layered α-ZrP
Fig.8  FESEM images of as-obtained NiO nanosheets
Fig.8  FESEM images of as-obtained NiO nanosheets
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