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

被引：46

作者：

Wang, Jiangxin ^{[1
]}

Yan, Chaoyi ^{[1
]}

Lin, Meng-Fang ^{[2
]}

Tsukagoshi, Kazuhito ^{[2
]}

Lee, Pooi See ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 639798, Singapore

[2] Natl Inst Mat Sci, Internat Ctr Mat Nanoarchitecton WPI MANA, Tsukuba, Ibaraki 3050044, Japan

来源：

JOURNAL OF MATERIALS CHEMISTRY C | 2015年 / 3卷 / 03期

基金：

日本学术振兴会;

关键词：

THIN-FILM TRANSISTORS; ULTRAVIOLET PHOTODETECTORS; ZN2GEO4; EFFICIENCY;

D O I：

10.1039/c4tc02297a

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页码：596 / 600

页数：5

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