Performance Enhancement of CdS/CdSe Quantum Dot-Sensitized Solar Cells with (001)-Oriented Anatase TiO2 Nanosheets Photoanode

Nanoscale Research Letters

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[1] 0000 0001 2287 1366, grid.28665.3f, Research Center for Applied Sciences (RCAS), Academia Sinica, 115, Taipei, Taiwan;0000 0004 0532 0580, grid.38348.34, Department of Materials Science and Engineering, National Tsing Hua University, 300, Hsinchu, Taiwan;

关键词: CdS/CdSe QDSSCs;    TiO nanosheets;    Photoanode;   

DOI  :  10.1186/s11671-018-2842-5

来源: publisher

【 摘 要 】

CdS/CdSe quantum dot-sensitized solar cells (QDSSCs) were fabricated on two types of TiO2 photoanodes, namely nanosheets (NSs) and nanoparticles. The TiO2 NSs with high (001)-exposed facets were prepared via a hydrothermal method, while the TiO2 nanoparticles used the commercial Degussa P-25. It was found that the pore size, specific surface area, porosity, and electron transport properties of TiO2 NSs were generally superior to those of P-25. As a result, the TiO2 NS-based CdS/CdSe QDSSC has exhibited a power conversion efficiency of 4.42%, which corresponds to a 54% improvement in comparison with the P-25-based reference cell. This study provides an effective photoanode design using nanostructure approach to improve the performance of TiO2-based QDSSCs.

【 授权许可】

CC BY