Improved Device Performance of Polymer-CuInS^sub 2^/TiO2 Solar Cells Based on Treated CuInS^sub 2^ Quantum Dots

This paper describes a solvothermal approach to remove the organic amine ligand on the surface of CuInS^sub 2^ quantum dots (QDs) and demonstrates improved device performance of ternary polymer-CuInS^sub 2^/TiO2 solar cells. Surface treatment of the CuInS^sub 2^ QDs was carried out using different t...

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Bibliographic Details
Published in:Journal of electronic materials 2015-10, Vol.44 (10), p.3294
Main Authors: Yue, Wenjin, Xie, Zhongwen, Pan, Yuwen, Zhang, Guoqiang, Wang, Songming, Xu, Fei, Yao, Cheng, Hu, Lingling, Li, Dan, Yang, Xing, Song, Qinping, Huang, Fangzhi
Format: Article
Language:English
Subjects:
Energy
Photovoltaic cells
Polymers
Quantum dots
Online Access:Get full text
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Summary:This paper describes a solvothermal approach to remove the organic amine ligand on the surface of CuInS^sub 2^ quantum dots (QDs) and demonstrates improved device performance of ternary polymer-CuInS^sub 2^/TiO2 solar cells. Surface treatment of the CuInS^sub 2^ QDs was carried out using different treatment methods, agents, and reaction times. Results showed that most of the amine ligands could be removed using hexanoic acid as the treatment agent by the solvothermal method in 16 h; the treated CuInS^sub 2^ QDs displayed an aggregation tendency and quenched the fluorescence of poly(2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylene vinylene) (MEH-PPV) more effectively. As a result, MEH-PPV-CuInS^sub 2^/TiO2 solar cells based on the treated CuInS^sub 2^ QDs showed much higher device performance than those containing pristine CuInS^sub 2^ QDs, achieving efficiency of 2.02% under AM1.5 illumination.
ISSN:0361-5235
1543-186X
DOI:10.1007/s11664-015-3903-5