Fabrication of high-quality In2Se3 nanowire arrays toward high-performance visible-light photodetectors.
The synthesis of high-quality In2Se3 nanowire arrays via thermal evaporation method and the photoconductive characteristics of In2Se3 individual nanowires are first investigated. The electrical characterization of a single In2Se3 nanowire verifies an intrinsic n-type semiconductor behavior. These single-crystalline In2Se3 nanowires are then assembled in visible-light sensors which demonstrate a fast, reversible, and stable response. The high photosensitivity and quick photoresponse are attributed to the superior single-crystal quality and large surface-to-volume ratio resulting in fewer recombination barriers in nanostructures. These excellent performances clearly demonstrate the possibility of using In2Se3 nanowires in next-generation sensors and detectors for commercial, military, and space applications.
International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan. zhai.tianyou@gmail.com
Tianyou
T
Zhai
Xiaosheng
X
Fang
Meiyong
M
Liao
Xijin
X
Xu
Liang
L
Li
Baodan
B
Liu
Yasuo
Y
Koide
Ying
Y
Ma
Jiannian
J
Yao
Yoshio
Y
Bando
Dmitri
D
Golberg