Journal
APPLIED PHYSICS LETTERS
Volume 111, Issue 5, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4997327
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Funding
- National Natural Science Foundation of China [11474310, 61605237, 11604367]
- projects of Jiangsu Province and Suzhou City [BE2014061, BE2016006-3, BK20150366, BK20150367, ZXG201410, SYG201629, SYG201623]
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We demonstrate a room temperature ultra-broadband graphene-InSb heterostructure photodetector. By introducing a thin oxide layer between the P-type graphene film and N-type InSb, the dark current is suppressed sharply. The device can detect light from the visible to far infrared region, exhibiting a high responsivity of similar to 70 mA W-1 at a typical wavelength of 1.7 mu m. It is worth mentioning that the photodetector has delivered a mid-infrared (MIR) photoresponsivity of similar to 42 mA W-1, which also opens a way for MIR communication technology. Published by AIP Publishing.
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