Nonlocal Response in Infrared Detector with Semiconducting Carbon Nanotubes and Graphdiyne,Advanced Science

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Nonlocal Response in Infrared Detector with Semiconducting Carbon Nanotubes and Graphdiyne
Advanced Science ( IF 14.3 ) Pub Date : 2017-10-25 , DOI: 10.1002/advs.201700472
Zhe Zheng _{1,

2} , Hehai Fang ₃ , Dan Liu ₁ , Zhenjun Tan ₁ , Xin Gao ₁ , Weida Hu ₃ , Hailin Peng ₁ , Lianming Tong ₁ , Wenping Hu ₂ , Jin Zhang ₁

Affiliation

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 cmHz^1/2 W⁻¹, respectively.

中文翻译：

半导体碳纳米管和Graphdiyne红外探测器中的非局部响应

半导体单壁碳纳米管（s-SWNT）由于其优异的固有特性，被认为是红外（IR）光学检测的重要候选对象。但是，激子在s-SWNT中的强大结合能严重阻碍了s-SWNTs红外光电探测器的发展。该通讯报道了一个具有高纯度s-SWNTs和γ-graphdiyne的红外光电探测器。两种材料之间的异质结可以有效地分离光生激子。与仅使用s-SWNT制造的设备相比，该红外探测器在设备的整个通道中显示出均匀的响应。响应时间证明低于1毫秒。最佳的响应度和检测率大约达到0.4 mA W ^-1和5×10 ⁶ cmHz ^1/2 W^-1。

更新日期：2017-10-25

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