Branched ZnO Nanowires for Enhancing Energy Conversion Efficiency of Dye-Sensitized Solar Cells

2008 ◽  
Author(s):  
Hsin-Ming Cheng ◽  
Wei-Hao Chiu ◽  
Chia-Hua Lee ◽  
Song-Yeu Tsai ◽  
Wen-Feng Hsieh
RSC Advances ◽  
2016 ◽  
Vol 6 (87) ◽  
pp. 83802-83807 ◽  
Author(s):  
Yu Hou ◽  
Shuang Yang ◽  
Chunzhong Li ◽  
Huijun Zhao ◽  
Hua Gui Yang

An energy conversion efficiency of 8.31% is reached by using a cemented photoanode for dye-sensitized solar cells, attaining a 31.1% improvement over the standard Degussa P25 sample.


2008 ◽  
Vol 1102 ◽  
Author(s):  
Qifeng Zhang ◽  
Samson A Jenekhe ◽  
Guozhong Cao

AbstractWe report the synthesis of ZnO aggregates in the presence of lithium salt and the enhancement on the energy conversion efficiency of dye sensitized solar cells when the photoelectrode films consist of as-synthesized ZnO aggregates. The conversion efficiency for ZnO film consisting of aggregates synthesized with lithium involvement is significantly improved up to 5.8%, which is 32% higher than that of 4.4% obtained for pure ZnO film. Such an enhancement can be attributed to the effect of lithium-induced changes on the morphology and crystallinity of aggregates, the optical absorption of films, and the surface chemistry of ZnO, which provides the film with decreased electron trapping and increased refractive index, and enhances the electronic coupling between the dye molecules and ZnO.


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