Simultaneously Measured Photoluminescent and Conductive Properties of Printed ZnO Nanocrystals under Ar/O2 Mixtures. (2015)

• Record Type: Journal Article
• Authors: Nguyen, V.S.; Champouret, Y.; Kahn, M.L.; Jubera, V.; Debéda, H.
• Is Part Of: Procedia engineering. Volume 120(2015)
• Page Start: 993
• Page End: 997
• Publication Date: 2015
• Subjects: ZnO -- printed -- photolunimescence -- conduction -- Ar/O2 gas; Engineering -- Congresses; Engineering -- Periodicals; Engineering; Conference proceedings; Periodicals; 620.005
• DOI: 10.1016/j.proeng.2015.08.641
• Languages: English
• ISSNs: 1877-7058

Abstract

Abstract: In this work, both optical and electrical responses of screen-printed metal oxide gas sensors are measured under different Ar/O2 mixtures at room temperature. Printed gas sensors are based on ZnO nanocrystals deposited and further sintered at 400 °C on interdigitated Pt electrodes. The ZnO∼5 nm nanoparticles synthetized by an organometallic route form aggregates after deposition and present surface defects observed on photoluminescence (PL) spectrum. Current and PL intensity variations are simultaneously compared under Ar/O2 mixtures at room temperature. The sorption kinetics appear to be clearly different, with higher sensitivity for electrical conduction but unstable signal and longer time responses.