Graphene/CdTe heterostructure solar cell and its enhancement with photo-induced doping

Journal Article · Mon Nov 09 00:00:00 EST 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4935426· OSTI ID:22486031

Lin, Shisheng; Chen, Hongsheng ^[1]; Li, Xiaoqiang; Zhang, Shengjiao; Wang, Peng; Xu, Zhijuan; Zhong, Huikai; Wu, Zhiqian ^[1]

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1. Department of Information Science and Electronic Engineering, Zhejiang University, Hangzhou 310027 (China)

We report a type of solar cell based on graphene/CdTe Schottky heterostructure, which can be improved by surface engineering as graphene is atomic thin. By coating a layer of ultrathin CdSe quantum dots onto graphene/CdTe heterostructure, the power conversion efficiency is increased from 2.08% to 3.10%. Photo-induced doping is mainly accounted for this enhancement, as evidenced by field effect transport, Raman, photoluminescence, and quantum efficiency measurements. This work demonstrates a feasible way of improving the performance of graphene/semiconductor heterostructure solar cells by combining one dimensional with two dimensional materials.

• OSTI ID: 22486031
• Journal Information: Applied Physics Letters, Vol. 107, Issue 19; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
CADMIUM SELENIDES
CADMIUM TELLURIDES
GRAPHENE
PHOTOLUMINESCENCE
QUANTUM DOTS
QUANTUM EFFICIENCY
SOLAR CELLS
TWO-DIMENSIONAL SYSTEMS