Large area transparent ZnO photodetectors with Au wire network electrodes

S. Kiruthika; Shubra Singh; Giridhar U. Kulkarni

doi:10.1039/C6RA07118J

Large area transparent ZnO photodetectors with Au wire network electrodes

S. Kiruthika,^a Shubra Singh^b and Giridhar U. Kulkarni*^c

Author affiliations

* Corresponding authors

^a Chemistry & Physics of Materials Unit and Thematic Unit of Excellence in Nanochemistry, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bangalore 560064, India

^b Visiting Faculty to JNCASR from Crystal Growth Centre, Anna University, Chennai 600025, India

^c Centre for Nano and Soft Matter Sciences, Jalahalli, Bangalore 560013, India
E-mail: guk@cens.res.in

Abstract

Transparent electronics as a futuristic technology are fast growing and expanding beyond conventional optoelectronics. Here we report the fabrication of a large area, visibly transparent ultraviolet (UV) photodetector employing a laser deposited ZnO active layer in between branched Au wire networks, with the latter serving as electrodes due to being transparent in UV as well as visible regions. The Au wire networks were prepared using a crack templating method which is not only cost effective but also enables heterostructuring with simple processes. When compared to Ag contact pads, these wire network electrodes seem to enhance photocurrent collection efficiency resulting in high UV sensitivity at low response times. Importantly, the visible light transparency was as high as 80%.

Supplementary files

Publication details

The article was received on 17 Mar 2016, accepted on 14 Apr 2016 and first published on 15 Apr 2016

Article type: Paper

DOI: 10.1039/C6RA07118J

Citation: RSC Adv., 2016,6, 44668-44672

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Large area transparent ZnO photodetectors with Au wire network electrodes

S. Kiruthika, S. Singh and G. U. Kulkarni, RSC Adv., 2016, 6, 44668
DOI: 10.1039/C6RA07118J
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Large area transparent ZnO photodetectors with Au wire network electrodes

Abstract

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Large area transparent ZnO photodetectors with Au wire network electrodes

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