Investigation on Nanocrystalline Copper-doped Zirconia Thin Films for Optical Sensing of Carbon Monoxide at High Temperature

Abstract

Nanocrystalline copper-doped zirconia (CDZ; Cu:Zr = 16:84) thin films have been synthesized on long-period fiber gratings (CDZ-LPFG) by a polymeric precursor method. the CDZ-LPFG device was demonstrated to have high sensitivity and good reversibility for low-concentration CO sensing at high temperatures. the CDZ-LPFG responds with red shifts of its resonant wavelength (λR) to CO-containing gases and the λR shift reverses when it is exposed to air. the optical response of the CDZ-LPFG to CO is due primarily to the CDZ refractive index variations resulted from the reversible redox reactions (i.e. Cu2+ Cu+) in reducing and oxidizing atmospheres. the magnitude of the λR shift exhibited a strong dependence on CO concentration in a range from 0 to 1000 ppm that is potentially useful for quantitative measurement. © 2011 Elsevier B.V. All rights reserved.

Department(s)

Electrical and Computer Engineering

Comments

U.S. Department of Energy, Grant DE-NT0008062

Keywords and Phrases

Carbon monoxide; Copper-doped-zirconia; Gas sensing; Optical fiber

International Standard Serial Number (ISSN)

0925-4005

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 Elsevier, All rights reserved.

Publication Date

15 Dec 2011

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