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Proceedings Paper

UV radiation and CH4 gas detection with a single ZnO:Pd nanowire
Author(s): O. Lupan; R. Adelung; V. Postica; N. Ababii; L. Chow; B. Viana; T. Pauporté
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Paper Abstract

There is an increasing demand for sensors to monitor environmental levels of ultraviolet (UV) radiation and pollutant gases. In this work, an individual nanowire of Pd modified ZnO nanowire (ZnO:Pd NW) was integrated in a nanosensor device for efficient and fast detection of UV light and CH4 gas at room temperature. Crystalline ZnO:Pd nanowire/nanorod arrays were synthesized onto fluorine doped tin oxide (FTO) substrates by electrochemical deposition (ECD) at relative low-temperatures (90 °C) with different concentrations of PdCl2 in electrolyte solution and investigated by SEM and EDX. Nanodevices were fabricated using dual beam focused electron/ion beam (FIB/SEM) system and showed improved UV radiation response compared to pristine ZnO NW, reported previously by our group. The UV response was increased by one order in magnitude (≈ 11) for ZnO:Pd NW. Gas sensing measurements demonstrated a higher gas response and rapidity to methane (CH4 gas, 100 ppm) at room temperature, showing promising results for multifunctional applications. Also, due to miniature size and ultra-low power consumption of these sensors, it is possible to integrate them into portable devices easily, such as smartphones, digital clock, flame detection, missile lunching and other smart devices.

Paper Details

Date Published: 24 February 2017
PDF: 7 pages
Proc. SPIE 10105, Oxide-based Materials and Devices VIII, 101051Y (24 February 2017); doi: 10.1117/12.2249841
Show Author Affiliations
O. Lupan, PSL Research Univ., Chimie ParisTech-CNRS, Institut de Recherche de Chimie Paris (France)
Christian-Albrechts-Univ. zu Kiel (Germany)
Technical Univ. of Moldova (Moldova)/Univ. of Central Florida (United States) (Moldova)
R. Adelung, Christian-Albrechts-Univ. zu Kiel (Germany)
V. Postica, Technical Univ. of Moldova (Moldova)
N. Ababii, Technical Univ. of Moldova (Moldova)
L. Chow, Univ. of Central Florida (United States)
B. Viana, PSL Research Univ., Chimie ParisTech-CNRS, Institut de Recherche de Chimie Paris (France)
T. Pauporté, PSL Research Univ., Chimie ParisTech-CNRS, Institut de Recherche de Chimie Paris (France)

Published in SPIE Proceedings Vol. 10105:
Oxide-based Materials and Devices VIII
Ferechteh H. Teherani; David C. Look; David J. Rogers, Editor(s)

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