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Start Over Author "Zhang, Zhitao" Journal journal of materials chemistry c
10 results on '"Zhang, Zhitao"'

2. Improving performance in CdTe/CdSe nanocrystals solar cells by using bulk nano-heterojunctions

Author

Donghuan Qin, Kuankuan Lu, Ya Xie, Miaozi Li, Zhang Zhitao, Yangdong Zhang, Hongbin Wu, Qiongxuan Tan, Wei Xu, and Lintao Hou

Subjects
Nanocomposite, Materials science, business.industry, Bilayer, Heterojunction, 02 engineering and technology, General Chemistry, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Cadmium telluride photovoltaics, 0104 chemical sciences, Cdse nanocrystals, Nano, Materials Chemistry, Optoelectronics, Degradation (geology), 0210 nano-technology, business, Layer (electronics)
Abstract

We have developed an ITO/ZnO/CdSe/CdTe:CdSe/CdTe/Au novel device architecture based on solution processed CdTe and CdSe nanocrystals (NCs). The introduced hybrid CdTe:CdSe layer was made by mixing different NCs in solution, which allowed for tailoring the optoelectronic properties of the nanocomposite materials. Our novel devices demonstrated more than 30% improvement in Jsc compared with their bilayer analogue, resulting from suppressed recombination. The champion device showed a 6.25% PCE, which is a record for solution processed CdTe:CdSe p–n junction solar cells with the inverted structure. Most important of all, the devices showed extreme stability after storage for three days when maintained under ambient conditions, and less than 3% degradation was observed in PCE after 50 days of storage.

Published
2016

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