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

Wei Feng, Xiaona Wang, Jia Zhang, Lifeng Wang, Wei Zheng, Pingan Hu, Wenwu Cao, Bin Yang

Research output: Contribution to journalArticle

74 Citations (Scopus)

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 Ga2O 3. 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. This journal is

Original languageEnglish (US)
Pages (from-to)3254-3259
Number of pages6
JournalJournal of Materials Chemistry C
Volume2
Issue number17
DOIs
StatePublished - May 7 2014

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Nanosheets
Photodetectors
Graphite
Quantum efficiency
Ultraviolet radiation
Graphene
Semiconductor materials
Fabrication

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Chemistry

Cite this

Feng, Wei ; Wang, Xiaona ; Zhang, Jia ; Wang, Lifeng ; Zheng, Wei ; Hu, Pingan ; Cao, Wenwu ; Yang, Bin. / Synthesis of two-dimensional β-Ga2O3 nanosheets for high-performance solar blind photodetectors. In: Journal of Materials Chemistry C. 2014 ; Vol. 2, No. 17. pp. 3254-3259.
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Synthesis of two-dimensional β-Ga2O3 nanosheets for high-performance solar blind photodetectors. / Feng, Wei; Wang, Xiaona; Zhang, Jia; Wang, Lifeng; Zheng, Wei; Hu, Pingan; Cao, Wenwu; Yang, Bin.

In: Journal of Materials Chemistry C, Vol. 2, No. 17, 07.05.2014, p. 3254-3259.

Research output: Contribution to journalArticle

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