Solution-Processed Graphene Composite Films as Freestanding Platinum-Free Counter Electrodes for Bendable Dye Sensitized Solar Cells

Sulfuric acid-treated poly（3,4-ethylenedioxythiophene）：poly（styrenesulfonate）/less-defective reduced graphene oxide （ST-PEDOT：PSS/L-rGO） composite films were prepared via a solution-processing route and used as the counter electrodes of dye sensitized solar cells （DSSCs）. These platinum （Pt）- and tr...

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Bibliographic Details
Published in:Chinese journal of chemistry 2016-01, Vol.34 (1), p.59-66
Main Authors: Zhou, Qinqin, Chen, Shan, Zhang, Miao, Wang, Liduo, Li, Yingru, Shi, Gaoquan
Format: Article
Language:English
Subjects:
counter electrode
dye sensitized solar cell
Electrodes
graphene
Photovoltaic cells
polymers
Solar energy
TiO2纳米管
复合膜
弯曲
染料敏化太阳能电池
氧化石墨
溶液处理
透明导电氧化物
铂电极
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Summary:Sulfuric acid-treated poly（3,4-ethylenedioxythiophene）：poly（styrenesulfonate）/less-defective reduced graphene oxide （ST-PEDOT：PSS/L-rGO） composite films were prepared via a solution-processing route and used as the counter electrodes of dye sensitized solar cells （DSSCs）. These platinum （Pt）- and transparent conductive oxide （TCO）-free counter electrodes exhibited strong catalytic activity and excellent flexibility, showing no obvious change in their sheet resistances after 10000 cycles of bending. The integrated quasi-solid-state DSSC device with a TiO2 nanotube/Ti mesh photoanode and a ST-PEDOT：PSS/L-rGO counter electrode exhibited an energy conversion efficiency （~/） of about 1.8%. It also displayed an excellent mechanical stability and durability after bending for 1000 cycles at a small curvature radius of 10 mm. The high flexibility, low cost and efficient catalytic activity make ST-PEDOT：PSS/L-rGO composite films promising counter electrodes for flexible DSSCs.
ISSN:1001-604X
1614-7065
DOI:10.1002/cjoc.201500609