Self-powered solar-blind UV/visible dual-band photodetection based on a solid-state PEDOT:PSS/α-Ga2O3 nanorod array/FTO photodetector

被引：25
作者：
Fan, Ming-Ming [1 ]
Xu, Kang-Li [1 ]
Li, Xiu-Yan [1 ]
He, Gao-Hang [2 ]
Cao, Ling [1 ]
机构：
[1] Taiyuan Univ Technol, Coll Phys & Optoelect, Taiyuan 030024, Peoples R China
[2] Chinese Acad Sci, Suzhou Inst Nanotech & Nanobion SINANO, Vacuum Interconnected Nanotech Workstn NanoX, Suzhou 215123, Peoples R China
来源：
JOURNAL OF MATERIALS CHEMISTRY C | 2021年 / 9卷 / 46期
基金：
中国国家自然科学基金;
关键词：
ULTRAVIOLET PHOTODETECTOR; GROWTH; GAOOH;
D O I：
10.1039/d1tc04091j
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Through the construction of a PEDOT:PSS/alpha-Ga2O3 heterojuntion on FTO by hydrothermal, low-temperature annealing and spin-coating processes, a self-powered PEDOT:PSS/alpha-Ga2O3 nanorod array/FTO photodetector has successfully realized dual-band photodetection; it possesses a solar-blind UV main band with a peak responsivity of similar to 1.43 mA W-1 at 245 nm and a visible subband with a peak responsivity of similar to 0.07 mA W-1 at 540 nm. Due to the highly efficient PEDOT:PSS/alpha-Ga2O3 heterojuntion, the peak responsivity in the solar-blind UV range is not only similar to 10(4) times as high as that of the compared alpha-Ga2O3/FTO photodetector, but also one of the best values among the popular self-powered alpha-Ga2O3 nanorod array photodetectors based on the liquid-state photoelectrochemical structure, thus indicating the realization of a high-responsivity solid-state device with more convenient operation. More importantly, our photodetector has realized solar-blind UV/visible dual-band photodetection for the first time among self-powered Ga2O3-based dual-band photodetectors, which paves a feasible way to demonstrate high-performance solid-state alpha-Ga2O3 solar-blind UV/visible dual-band photodetection by easy, common and low-cost processes.
引用
收藏
页码：16459 / 16467
页数：10
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