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High efficiency and fast van der Waals hetero-photodiodes with a unilateral depletion region
Wu, Feng; Li, Qing; Wang, Peng; Xia, Hui; Wang, Zhen; Wang, Yang; Luo, Man; Chen, Long; Chen, Fansheng; Miao, Jinshui; Chen, Xiaoshuang; Lu, Wei; Shan, Chongxin; Pan, Anlian; Wu, Xing; Ren, Wencai; Jariwala, Deep; Hu, Weida
2019-10-11
Source PublicationNATURE COMMUNICATIONS
ISSN2041-1723
Volume10
AbstractVan der Waals (vdW) heterodiodes based on two-dimensional (2D) materials have shown tremendous potential in photovoltaic detectors and solar cells. However, such 2D photovoltaic devices are limited by low quantum efficiencies due to the severe interface recombination and the inefficient contacts. Here, we report an efficient MoS2/AsP vdW hetero-photodiode utilizing a unilateral depletion region band design and a narrow bandgap AsP as an effective carrier selective contact. The unilateral depletion region is verified via both the Fermi level and the infrared response measurements. The device demonstrates a pronounced photovoltaic behavior with a short-circuit current of 1.3 mu A and a large open-circuit voltage of 0.61 V under visible light illumination. Especially, a high external quantum efficiency of 71%, a record high power conversion efficiency of 9% and a fast response time of 9 mu s are achieved. Our work suggests an effective scheme to design high-performance photovoltaic devices assembled by 2D materials.
Indexed BySCI
Language英语
WOS IDWOS:000489706400015
PublisherNATURE PUBLISHING GROUP
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/80707
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Wu, Feng,Li, Qing,Wang, Peng,et al. High efficiency and fast van der Waals hetero-photodiodes with a unilateral depletion region[J]. NATURE COMMUNICATIONS,2019,10.
APA Wu, Feng.,Li, Qing.,Wang, Peng.,Xia, Hui.,Wang, Zhen.,...&Hu, Weida.(2019).High efficiency and fast van der Waals hetero-photodiodes with a unilateral depletion region.NATURE COMMUNICATIONS,10.
MLA Wu, Feng,et al."High efficiency and fast van der Waals hetero-photodiodes with a unilateral depletion region".NATURE COMMUNICATIONS 10(2019).
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