Enhanced dye-sensitized solar cell using graphene-TiO2 photoanode prepared by heterogeneous coagulation

Applied Physics Letters - Tập 96 Số 8 - 2010
Shengrui Sun1, Lian Gao1, Yangqiao Liu1
1Chinese Academy of Sciences State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, , 1295 Ding Xi Road, Shanghai 200050, People’s Republic of China

Tóm tắt

In this study, dye-sensitized solar cells (DSSC) were fabricated using graphene-TiO2 composite photoanodes. The graphene-TiO2 nanocomposites were prepared using the heterogeneous coagulation between Nafion-coated graphene and commercial TiO2 (P25) nanoparticles, which ensured a tight interfacial binding between them. The DSSC incorporating 0.5 wt  % graphene in the TiO2 photoanode demonstrates a power conversion efficiency of 4.28%, which is 59% higher than that without graphene. It was found that the incorporated graphene caused both increased dye adsorption and significant longer electron lifetime. Graphene has been proven to be an attractive candidate for improving the performance of DSSC.

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Applied Physics Letters

Tập 96 Số 8

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