Preparation of TNAs/NiO p-n heterojunction and their applications in UV photosensor

• Published in: AIP Conference Proceedings
• Main Author: Yusoff M.M.; Mamat M.H.; Malek M.F.; Abdullah M.A.R.; Ismail A.S.; Saidi S.A.; Mohamed R.; Suriani A.B.; Khusaimi Z.; Rusop M.
• Format: Conference paper
• Language: English
• Published: American Institute of Physics Inc. 2018
• Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85047333522&doi=10.1063%2f1.5036916&partnerID=40&md5=0a2d0138fdab2f43dd5c01bf8bc8e935
• ISSN: 0094243X
• DOI: 10.1063/1.5036916

A nanocomposite consisted of n-type titanium dioxide (TiO2) nanorod arrays (TNAs) and p-type nickel oxide (NiO) were deposited using a novel facile low-temperature aqueous chemical route (ACR) in a Schott bottle with cap clamps and sol-gel spin coating method, respectively on a transparent conductive oxide (TCO) glass substrate for the application of ultraviolet (UV) photosensor. The p-n heterojunction photosensor exhibited an increase in photocurrent under UV light (365 nm, 750 μW/cm2) at applied reverse bias. The measured UV response also revealed an increase in photocurrent, and dark current with increasing applied reverse bias on the p-n heterojunction. In this study, the fabricated TNAs/NiO composite nanostructures showed potential applications for photosensor based on the steady photocurrent results obtained under UV irradiation. © 2018 Author(s).