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Nonlocal Response in Infrared Detector with Semiconducting Carbon Nanotubes and Graphdiyne.

ABSTRACT: 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 ?-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 cmHz^1/2 W^-1, respectively.

SUBMITTER: Zheng Z

PROVIDER: S-EPMC5737326 | biostudies-literature | 2017 Dec

REPOSITORIES: biostudies-literature

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Nonlocal Response in Infrared Detector with Semiconducting Carbon Nanotubes and Graphdiyne.

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

Advanced science (Weinheim, Baden-Wurttemberg, Germany) 20171025 12

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 ...[more]

PMID: 29270354

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