Simultaneously Measured Photoluminescent and Conductive Properties of Printed ZnO Nanocrystals under Ar/O2 Mixtures

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∼5nm nanopa...

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Bibliographic Details
Published inProcedia engineering Vol. 120; pp. 993 - 997
Main Authors Nguyen, V.S., Champouret, Y., Kahn, M.L., Jubera, V., Debéda, H.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 2015
Subjects
Ar/O2 gas
conduction
photolunimescence
printed
ZnO
Ar/O2 gas
printed
ZnO
photolunimescence
conduction
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Summary: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∼5nm 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.
ISSN:1877-7058
1877-7058
DOI:10.1016/j.proeng.2015.08.641