Journal
ADVANCED SCIENCE
Volume 4, Issue 12, Pages -Publisher
WILEY
DOI: 10.1002/advs.201700472
Keywords
infrared photodetector; s-SWNTs; uniform response; gamma-GDY
Categories
Funding
- Ministry of Science and Technology of China [2016YFA0200101, 2016YFA0200104]
- National Natural Science Foundation of China [21233001, 21790052, 51720105003]
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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 gamma-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 x 10(6) cmHz(1/2) W-1, respectively.
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