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

作　　者：Qinqin Zhou Shan Chen Miao Zhang Liduo Wang Yingru Li Gaoquan Shi 

机构地区：[1]Department of Chemistry, Tsinghua University, Beijing 100084, China

出　　处：《Chinese Journal of Chemistry》2016年第1期59-66,共8页中国化学（英文版）

基　　金：Acknowledgement This work was supported by the National Basic Research Program of China （973 Program, No. 2012CB933402） and the Natural Science Foundation of China （Nos. 51433005, 21274074）.

摘　　要：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.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.

关 键 词：GRAPHENE POLYMERS counter electrode dye sensitized solar cell 

分 类 号：O613.71[理学—无机化学] TM914.4[理学—化学]