Engineering crystalline structures of two-dimensional MoS2 sheets for high-performance organic solar cells

Xi Yang; Weifei Fu; Wenqing Liu; Jinghua Hong; Yu Cai; Chuanhong Jin; Mingsheng Xu; Haibo Wang; Deren Yang; Hongzheng Chen

doi:10.1039/C4TA01336K

Engineering crystalline structures of two-dimensional MoS₂ sheets for high-performance organic solar cells†

Xi Yang,‡^a Weifei Fu,‡^a Wenqing Liu,^a Jinghua Hong,^c Yu Cai,^a Chuanhong Jin,^c Mingsheng Xu,*^a Haibo Wang,^b Deren Yang^d and Hongzheng Chen*^a

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* Corresponding authors

^a State Key Laboratory of Silicon Materials, MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, P. R. China
E-mail: hzchen@zju.edu.cn, msxu@zju.edu.cn

^b State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Changchun 130022, P. R. China

^c State Key Laboratory of Silicon Materials, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, Department of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, P. R. China

^d State Key Laboratory of Silicon Materials and Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China

Abstract

The effects of different local crystalline structures on two-dimensional (2D) MoS₂ sheets are studied to provide new insights into how the local characteristics affect the performance of organic solar cells (OSCs) and how to tailor the local characteristics towards high-performance devices. UV–ozone post-treatment of 2D MoS₂ sheets led to incorporation of oxygen atoms into the lattice of the sheets. The incorporated oxygen in 2D MoS₂ sheets significantly improved the performance of OSCs, where 2D MoS₂ sheets were used as hole transport layers.

Journal of Materials Chemistry A

Engineering crystalline structures of two-dimensional MoS₂ sheets for high-performance organic solar cells†

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Engineering crystalline structures of two-dimensional MoS₂ sheets for high-performance organic solar cells

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Journal of Materials Chemistry A