期刊
IEEE TRANSACTIONS ON ELECTRON DEVICES
卷 68, 期 1, 页码 164-167出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TED.2020.3039764
关键词
Surface plasmons; Photodetectors; Surface treatment; Gold; Absorption; Nonhomogeneous media; Performance evaluation; Au nanoarrays; black-phosphorus (BP); cladded surface plasmon; metal– semiconductor interface; photodetector
资金
- Scientific Research Foundation for Introduced Talents of Qingdao University [DC1900015713]
- National Natural Science Foundation of China [62004110, 51872149, 51672142]
The research team reported a cladded surface-plasmon-enhanced black-phosphorus photodetector, which successfully addressed the issue of high-energy deposition processes damaging the crystal lattice of 2-D semiconductor by metal surface plasmon. The photodetector exhibits superior photoresponse enhancement surpassing other conventional technologies, providing guidance for designing advanced 2-D semiconductor photodetectors.
Surface plasmon is promising for applications in 2-D semiconductor photodetector due to their great potential to improve light absorption of 2-D semiconductor, where the poor light absorption of 2-D semiconductor limits the performance of 2-D photodetector to some extent. However, high-energy deposition processes of metal surface plasmon damage the surface crystal lattice of 2-D semiconductor, which hampers the current transport in 2-D semiconductor. Here, we report the cladded surface-plasmon-enhanced black-phosphorus (BP) photodetector with damage-free metal-semiconductor interface. Without the adverse effect of the direct deposition process for metal surface plasmon, the cladded surface-plasmon-enhanced BP photodetector exhibits a superior photoresponse enhancement by up to 1000%, which exceeds other conventional surface-plasmon-enhanced 2-D semiconductor photodetectors. Our results provide guidelines to design advanced surface-plasmon-enhanced 2-D semiconductor photodetector for practical application.
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