High-performance photodetectors for visible and near-infrared lights based on individual WS2 nanotubes

被引：106

作者：

Zhang, Chaoying ^{[1
]}

Wang, Sheng ^{[1
]}

Yang, Leijing ^{[1
]}

Liu, Yang ^{[1
]}

Xu, Tingting ^{[1
]}

Ning, Zhiyuan ^{[1
]}

Zak, Alla ^{[2
,3
]}

Zhang, Zhiyong ^{[1
]}

Tenne, Reshef ^{[2
]}

Chen, Qing ^{[1
]}

机构：

[1] Peking Univ, Key Lab Phys & Chem Nanodevices, Dept Elect, Beijing 100871, Peoples R China

[2] Weizmann Inst Sci, Dept Mat & Interfaces, IL-76100 Rehovot, Israel

[3] Holon Inst Technol, Fac Sci, IL-58102 Holon, Israel

来源：

APPLIED PHYSICS LETTERS | 2012年 / 100卷 / 24期

基金：

以色列科学基金会;

关键词：

ZNO NANOWIRE; THIN-FILMS;

D O I：

10.1063/1.4729144

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We propose that a photodetector based on nanotubes formed from layered structure may have a faster response than nanowires or nanobelts. The layered compound tungsten disulfide (WS2) can absorb visible and near-infrared lights. We fabricated photodetectors based on individual WS2 nanotubes. The photodetectors exhibited a remarkable response to excitation with 633 and 785 nm light. The nanotube-based photodetectors exhibited short rise and decay times of a few hundred mu s, high on/off ratio, and high spectral responsivity and external quantum efficiency. Our results imply that WS2 nanotubes are prospective candidates for high-performance nanoscale optoelectronic devices. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4729144]

引用

页数：5

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