Potassium-Doped Zinc Oxide as Photocathode Material in Dye-Sensitized Solar Cells

被引:33
作者
Bai, Jie [1 ]
Xu, Xiaobao [1 ]
Xu, Ling [2 ]
Cui, Jin [1 ]
Huang, Dekang [2 ]
Chen, Wei [1 ]
Cheng, Yibing [3 ]
Shen, Yan [2 ]
Wang, Mingkui [1 ]
机构
[1] Huazhong Univ Sci & Technol, Sch Opt & Elect Informat, Wuhan Natl Lab Optoelect, Michael Gratzel Ctr Mesoscop Solar Cells, Wuhan 430074, Peoples R China
[2] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Peoples R China
[3] Monash Univ, Dept Mat Engn, Melbourne, Vic 3800, Australia
关键词
doping; dyes; nanoparticles; photovoltaics; semiconductors; CHARGE-TRANSFER; ZNO; SEMICONDUCTOR; ELECTROLYTE; NANOSTRUCTURES; NANOPARTICLES; PERFORMANCE; EFFICIENCY; FILM;
D O I
10.1002/cssc.201200935
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
ZnO nanoparticles are doped with K and applied in p-type dye-sensitized solar cells (DSCs). The microstructure and dynamics of hole transportation and recombination are investigated. The morphology of the K-doped ZnO nanoparticles shows a homogeneous distribution with sizes in the range 3040nm. When applied in p-type DSCs in combination with C343 as sensitizer, the K-doped ZnO nanoparticles achieve a photovoltaic power conversion efficiency of 0.012% at full-intensity sunlight. A further study on the device by transient photovoltage/photocurrent decay measurements shows that the K-doped ZnO nanoparticles have an appreciable hole diffusion coefficient (ca. 106cm2s1). Compared to the widely used p-type NiO nanoparticles, this advantage is crucial for further improving the efficiency of p-type DSCs.
引用
收藏
页码:622 / 629
页数:8
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