RAPID PHOTODETECTOR BASED ON GRAPHENE/BLACK PHOSPHORUS/MOLYBDENUM DISULFIDE/GRAPHENE HETEROJUNCTION, AND PREPARATION METHOD THEREFOR

WIPO Patent Application WO/2021/077837

A1

A rapid photodetector based on a graphene/black phosphorus/molybdenum disulfide/graphene heterojunction, comprising a substrate (10), a first electrode (20), a second electrode (30), a first graphene layer (40), a black phosphorus thin film layer (50), a molybdenum disulfide layer (60), and a second graphene layer (70). The first electrode (20) and the second electrode (30) are arranged at an interval on a surface on one side of the substrate (10), the first electrode (20) and the second electrode (30) forming a channel structure. The first graphene layer (40), the black phosphorus thin film layer (50), the molybdenum disulfide layer (60) and the second graphene layer (70) are sequentially stacked in the channel structure, the first electrode (20) and the second electrode (30) contacting the first graphene layer (40) and the second graphene layer (70) respectively. A graphene/black phosphorus/molybdenum disulfide/graphene heterojunction is provided in the photodetector, and thus wideband response is implemented, and the response speed of the photodetector is markedly improved. The response speed can reach the microsecond scale, which is beneficial for broad application of the photodetector.

ZHANG HAN (CN)
GAO SHAN (CN)
WANG HUIDE (CN)
GUO ZHINAN (CN)

PCT/CN2020/105550

April 29, 2021

July 29, 2020

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UNIV SHENZHEN (CN)

H01L31/109; H01L31/032; H01L31/18

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CN105679876A	2016-06-15
CN107482044A	2017-12-15
CN110993720A	2020-04-10
CN108666381A	2018-10-16
CN108447924A	2018-08-24
CN108831950A	2018-11-16
US20160020352A1	2016-01-21

SCIHEAD IP LAW FIRM (CN)

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