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A. R. A. RASHID1, P. S. MENON1,* , S. SHAARI1
Undoped and 1 at.% Al is prepared by sol gel method. Doped ZnO is coated on the optical fiber cores in order to sense various concentrations of methanol, ethanol, isopropanol and acetone vapour at room temperature. All the films have hexagonal wurtzite structure when analysed using the XRD spectra. The output power changes depending on the interaction between light propagation, coated fiber and the analyte. Output power ratio for 1 at.% Al-doped ZnO coated optical fiber reduces when the coated fiber is exposed to the tested vapour. Meanwhile for ethanol detection, the output power increases and has lower absorption than air. The time response of the vapour sensor is presented for undoped ZnO. Undoped ZnO has higher detection capability compared to Al-doped ZnO coated optical fiber due to the crystallite size..
Coated fiber optic, Al-doped ZnO, VOC sensing.
A. R. A. RASHID, P. S. MENON, S. SHAARI, Optical VOC sensing applications of Al doped ZnO coated optical fiber, Optoelectronics and Advanced Materials - Rapid Communications, 7, 11-12, November-December 2013, pp.835-839 (2013).
Submitted at: Sept. 18, 2013
Accepted at: Nov. 7, 2013
Optoelectronics and Advanced Materials - Rapid Communications
(2022): 0.5 - 2022 Journal Citation Reports (Clarivate Analytics, 2023)
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