Nonlocal Response in Infrared Detector with Semiconducting Carbon Nanotubes and Graphdiyne.
Semiconducting single-walled carbon nanotubes (s-SWNTs) are regarded as an important candidate for infrared (IR) optical detection due to their excellent intrinsic properties. However, the strong binding energy of excitons in s-SWNTs seriously impedes the development of s-SWNTs IR photodetector. This Communication reports an IR photodetector with highly pure s-SWNTs and γ-graphdiyne. The heterojunctions between the two materials can efficiently separate the photogenerated excitons. In comparison to device fabricated only with s-SWNTs, this IR detector shows a uniform response in the whole channel of the device. The response time is demonstrated to be below 1 ms. The optimal responsivity and detectivity approximately reach 0.4 mA W-1 and 5 × 106 cmHz1/2 W-1, respectively.
['Zheng|Zhe|Z|', 'Fang|Hehai|H|', 'Liu|Dan|D|', 'Tan|Zhenjun|Z|', 'Gao|Xin|X|', 'Hu|Weida|W|', 'Peng|Hailin|H|', 'Tong|Lianming|L|', 'Hu|Wenping|W|', 'Zhang|Jin|J|']
uniform response infrared photodetector s‐SWNTs γ‐GDY