Self-powered p-NiO/n-ZnO heterojunction ultraviolet photodetectors fabricated on plastic substrates

Md Rezaul Hasan; Ting Xie; Sara C. Barron; Guannan Liu; Nhan V. Nguyen; Abhishek Motayed; Mulpuri V. Rao; Ratan Debnath

doi:10.1063/1.4932194

APL Materials (Oct 2015)

Self-powered p-NiO/n-ZnO heterojunction ultraviolet photodetectors fabricated on plastic substrates

Md Rezaul Hasan,
Ting Xie,
Sara C. Barron,
Guannan Liu,
Nhan V. Nguyen,
Abhishek Motayed,
Mulpuri V. Rao,
Ratan Debnath

Affiliations

Md Rezaul Hasan: Materials Science and Engineering Division, Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
Ting Xie: Materials Science and Engineering Division, Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
Sara C. Barron: Materials Measurement Science Division, Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
Guannan Liu: Materials Science and Engineering Division, Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
Nhan V. Nguyen: Semiconductor and Dimensional Metrology Division, Physical Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
Abhishek Motayed: Materials Science and Engineering Division, Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
Mulpuri V. Rao: Department of Electrical and Computer Engineering, George Mason University, 4400 University Drive, Fairfax, Virginia 22030, USA
Ratan Debnath: Materials Science and Engineering Division, Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA

DOI: https://doi.org/10.1063/1.4932194
Journal volume & issue: Vol. 3, no. 10
pp. 106101 – 106101-7

Abstract

Read online

A self-powered ultraviolet (UV) photodetector (PD) based on p-NiO and n-ZnO was fabricated using low-temperature sputtering technique on indium doped tin oxide (ITO) coated plastic polyethylene terephthalate (PET) substrates. The p-n heterojunction showed very fast temporal photoresponse with excellent quantum efficiency of over 63% under UV illumination at an applied reverse bias of 1.2 V. The engineered ultrathin Ti/Au top metal contacts and UV transparent PET/ITO substrates allowed the PDs to be illuminated through either frontside or backside. Morphology, structural, chemical, and optical properties of sputtered NiO and ZnO films were also investigated.

Published in APL Materials

ISSN: 2166-532X (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Technology: Chemical technology: Biotechnology; Science: Physics
Website: http://aplmaterials.aip.org

About the journal