Piezo-Phototronic Enhanced UV Sensing Based on a Nanowire Photodetector Array

Xun Han; Weiming Du; Ruomeng Yu; Caofeng Pan; Zhong Lin Wang

doi:10.1002/adma.201502579

Piezo-Phototronic Enhanced UV Sensing Based on a Nanowire Photodetector Array

Adv Mater. 2015 Dec 22;27(48):7963-9. doi: 10.1002/adma.201502579. Epub 2015 Oct 28.

Authors

Xun Han¹, Weiming Du¹, Ruomeng Yu², Caofeng Pan¹, Zhong Lin Wang^{1

2}

Affiliations

¹ Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 100083, China.
² School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332-0245, USA.

PMID: 26510132
DOI: 10.1002/adma.201502579

Abstract

A large array of Schottky UV photodetectors (PDs) based on vertical aligned ZnO nanowires is achieved. By introducing the piezo-phototronic effect, the performance of the PD array is enhanced up to seven times in photoreponsivity, six times in sensitivity, and 2.8 times in detection limit. The UV PD array may have applications in optoelectronic systems, adaptive optical computing, and communication.

Keywords: Schottky contacts; UV photodetectors; nanowire arrays; piezo-phototronic effect; zinc oxides.