Synthesis and Characterization of Copper Doped Zinc Oxide Thin Films for CO Gas Sensing

Synthesis and Characterization of Copper Doped Zinc Oxide Thin Films for CO Gas Sensing

Objective of this work was to synthesize Copper doped Zinc Oxide (CZO) films and optimization of process parameters by varying molarity of zinc acetate dehydrate from 0.5 M to 1.0 M, concentration of copper acetate monohydrate from 1% to 5 % and annealing temperature from 200 °C to 300 °C to measure...

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Bibliographic Details
Published in:Materials today : proceedings Vol. 5; no. 10; pp. 20904 - 20911
Main Authors: Bharadwaj, Sachin S, Shivaraj, B.W., Narasimha Murthy, H.N., Krishna, M, Ganiger, Manjush, Idris, Mohd, Anawal, Pundaleek, Sangappa Angadi, Vitthal
Format: Journal Article
Language:English
Published: Elsevier Ltd 2018
Subjects:
CZO
Gas sensor
Sensitivity, ANOVA
Sensitivity, ANOVA
CZO
Gas sensor
CO
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Summary:Objective of this work was to synthesize Copper doped Zinc Oxide (CZO) films and optimization of process parameters by varying molarity of zinc acetate dehydrate from 0.5 M to 1.0 M, concentration of copper acetate monohydrate from 1% to 5 % and annealing temperature from 200 °C to 300 °C to measure the sensitivity of CZO films for CO (Carbon Monoxide) gas. The concentration of CO gas was maintained at 5 ppm and operating temperature of 250 °C was used for sensing. Analysis for sensitivity showed highest grading for parametric combination of 0.75 molarity, 3% copper concentration and 300 °C annealing temperature with surface roughness of 3.90 nm and grain size of 256 nm. TEM image revealed the crystalline grain size was 5 nm. ANOVA showed that annealing temperature influenced the sensitivity by 69.06 % .
ISSN:2214-7853
2214-7853
DOI:10.1016/j.matpr.2018.06.478