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

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

doi:10.1039/c4tc02297a

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

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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

44 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 language	English
Pages (from-to)	596-600
Number of pages	5
Journal	Journal of Materials Chemistry C
Volume	3
Issue number	3
DOIs	https://doi.org/10.1039/c4tc02297a
Publication status	Published - Jan 21 2015
Externally published	Yes

Bibliographical note

Publisher Copyright:
© The Royal Society of Chemistry 2015.

ASJC Scopus Subject Areas

General Chemistry
Materials Chemistry

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title = "Solution-assembled nanowires for high performance flexible and transparent solar-blind photodetectors",

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.",

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AU - Wang, Jiangxin

AU - Yan, Chaoyi

AU - Lin, Meng Fang

AU - Tsukagoshi, Kazuhito

AU - Lee, Pooi See

PY - 2015/1/21

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

Abstract

Bibliographical note

ASJC Scopus Subject Areas

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