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 journalArticlepeer-review

166 Scopus citations


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
Issue number17
StatePublished - May 7 2014

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Chemistry


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