响应度
光电探测器
材料科学
化学气相沉积
偏压
光电子学
比探测率
电压
物理
量子力学
作者
Yupeng Cao,Aiping Cao,Shubing Li,Jianli Tang,Rui Hu,Liyan Shang,Yawei Li,Kai Jiang,Jinzhong Zhang,Liangqing Zhu,Zhigao Hu
标识
DOI:10.1088/1361-6528/ad5dbf
摘要
Abstract The type-II Weyl semimetal T d -WTe 2 is one of the wonder materials for high-performance optoelectronic devices. We report the self-powered T d -WTe 2 photodetectors and their bias-dependent photoresponse in the visible region (405 nm, 520 nm, 638 nm) driven by the bulk photovoltaic effect (BPE). The device shows the responsivity of 15.8 mAW -1 and detectivity of 5.2×10 9 Jones at 520 nm. Besides, the response time of the WTe 2 photodetector shows a strong bias-voltage dependent property. This work offers a physical reference for understanding the photoresponse process of T d -WTe 2 photodetectors.
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