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Proceedings Paper

A novel flexible C2H2 gas sensor based on Ag-ZnO nanorods on PI/PTFE substrate
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Paper Abstract

In this work a novel flexible acetylene (C2H2) gas sensor based on Ag nanoparticles decorated vertical ZnO nanorods (Ag-ZnO NRs) on PI/PTFE substrate has been investigated. The grown structure was synthesized through a simple, rapid, and low-temperature hydrothermal-RF magnetron sputtering method. The successful immobilization of Ag nanoparticles (NPs) onto the surface of ZnO nanorods contributed large effective surface area and facilitated the charge transfer process. The as-fabricated sensor exhibited enhanced C2H2 sensing performances at low temperature (200°C) including a broad detection range (3 - 1000 ppm), and short recovery time (39 sec). Mechanical robustness and device flexibility were investigated at different curvature angle (0 - 90°) and several times bending-relaxing process (0 – 5 × 105 times). The sensor exhibited stable response magnitude with a negligible drift of ~ 2.1% for a maximum bending angle of 90o and a response drop of 8% after 5 × 104 bending/relaxing processes. The superior sensing features along with outstanding flexibility to extreme bending stress indicate the sensor a promising candidate for the development of practical flexible C2H2 gas sensors.

Paper Details

Date Published: 27 February 2016
PDF: 7 pages
Proc. SPIE 9749, Oxide-based Materials and Devices VII, 97491T (27 February 2016); doi: 10.1117/12.2202508
Show Author Affiliations
A. S. M. Iftekhar Uddin, Univ. of Ulsan (Korea, Republic of)
Gwiy-Sang Chung, Univ. of Ulsan (Korea, Republic of)

Published in SPIE Proceedings Vol. 9749:
Oxide-based Materials and Devices VII
Ferechteh H. Teherani; David C. Look; David J. Rogers, Editor(s)

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