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Issue 17, 2014
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Synthesis of two-dimensional β-Ga2O3 nanosheets for high-performance solar blind photodetectors

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Abstract

Two-dimensional (2D) semiconductors are limited to graphene analogues of layered materials, so it is extremely challenging to fabricate 2D non-layered materials with thicknesses of only a few atomic layers. Here, we report the successful fabrication of 2D Ga2O3 from the corresponding GaSe nanosheets and a solar blind photodetector based on 2D Ga2O3. The as-prepared 2D β-Ga2O3 is polycrystalline and has a thickness of less than 10 nm. Furthermore, we demonstrate a photodetector based on 2D β-Ga2O3, which show a sensitive, fast and stable photoresponse to ultraviolet radiation (254 nm). The responsivity, detectivity and external quantum efficiency of the photodetector are 3.3 A W−1, 4.0 × 1012 Jones and 1600%, respectively, indicating that the 2D Ga2O3 has great potential for application for solar-blind photodetectors.

Graphical abstract: Synthesis of two-dimensional β-Ga2O3 nanosheets for high-performance solar blind photodetectors

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Supplementary files

Article information


Submitted
26 Sep 2013
Accepted
31 Oct 2013
First published
11 Dec 2013

J. Mater. Chem. C, 2014,2, 3254-3259
Article type
Paper

Synthesis of two-dimensional β-Ga2O3 nanosheets for high-performance solar blind photodetectors

W. Feng, X. Wang, J. Zhang, L. Wang, W. Zheng, P. Hu, W. Cao and B. Yang, J. Mater. Chem. C, 2014, 2, 3254
DOI: 10.1039/C3TC31899K

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