A dual-band photodetector induced by hybrid surface plasmon resonance. (15th February 2021)

• Record Type: Journal Article
• Authors: Wu, Zemian; Liu, Yu; Guo, Junxiong; Huang, Wen
• Is Part Of: Japanese journal of applied physics. Volume 60:Number 3(2021)
• Publication Date: 2021-02-15
• Subjects: Dual-Band -- Photodetector -- Graphene; Physics -- Periodicals; 621.05
• DOI: 10.35848/1347-4065/abdf79
• Languages: English
• ISSNs: 0021-4922

Abstract

Abstract: In this letter, we proposed an advanced dual-band detector based on the plasmonic response of patterned graphene integrated on a gold array. The photodetector shows ultra-high photoresponse performance in both visible light (0.4–0.7 μ m) and mid-infrared (4–14 μ m) light. The highest achievable responsivity of 2.7 A W −1 is comparable with typical visible and mid-infrared photodetectors. The working wavelength can be tuned by changing the external gate voltage bias, the dimension of graphene, and the architecture of the gold array. The demonstration of a surface plasmon resonance enhanced detector brings us a step closer to high sensitivity room-temperature multiband devices.