Solution-assembled nanowires for high performance flexible and transparent solar-blind photodetectors

Jiangxin Wang, Chaoyi Yan, Meng Fang Lin, Kazuhito Tsukagoshi, Pooi See Lee

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)

Abstract

Solar-blind photodetectors based on Zn2GeO4 (ZGO) nanowires (NWs) with high transparency and good flexibility were successfully fabricated on a polyethylene terephthalate (PET) substrate using a facile all solution-processible method. The electrodes and functional channels are constructed with silver NWs (Ag NWs) and ZGO NWs, respectively, using a spray coating method. The spray-coated all-NW device exhibited high transparency, good mechanical bending stability, high photoresponse, and short cutoff wavelength. The Schottky barrier between the Ag-ZGO NWs together with the junction barrier between interconnecting ZGO NWs contributed to a high photoresponse and improved switching time in the devices. We propose that the unique energy band structure of the ZGO NW networks provides an additional mechanism to further reduce the cutoff wavelength in solar-blind photodetectors.

Original languageEnglish
Pages (from-to)596-600
Number of pages5
JournalJournal of Materials Chemistry C
Volume3
Issue number3
DOIs
Publication statusPublished - 2015 Jan 21
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry

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