Cu-Doped ZnO Thin Films Deposited by a Sol-Gel Process Using Two Copper Precursors: Gas-Sensing Performance in a Propane Atmosphere
Abstract
:1. Introduction
2. Experimental Procedure
2.1. Deposition Conditions
2.2. Characterization Conditions
3. Results and Discussion
3.1. Crystal Structure of the Films
ID Sample | FWHM (°) | 2θ (°) | c (Å) | D (Å) |
---|---|---|---|---|
Cu-doped ZnO, copper chloride | 0.2048 | 34.37 | 5.212 | 401.4 |
Cu-doped ZnO, copper acetate | 0.2036 | 34.38 | 5.210 | 403.8 |
Undoped ZnO | 0.2032 | 34.39 | 5.207 | 405.5 |
3.2. Morphological Properties
3.3. Composition Analysis
3.4. Sensing Properties
3.4.1. Effect of Surface Morphology (Porosity) on Sensing Properties
Film | Film Thickness for 6 Dips (nm) | Film Thickness for 8 Dips (nm) |
---|---|---|
Cu-doped ZnO (copper chloride) | 300 | 350 |
Cu-doped ZnO (copper acetate) | 242 | 335 |
Morphological Parameters for Different Number Dips | Cu-Doped ZnO (Copper Acetate) | Cu-Doped ZnO (Copper Chloride) | ||
---|---|---|---|---|
Number of dips | 6 | 8 | 6 | 8 |
RMS surface roughness | 54.32 | 60.94 | 48.80 | 54.50 |
Empty volume/grain volume (%) | 54.62 | 46.88 | 58.06 | 48.98 |
3.4.2. Adsorption of Propane Gas over the Cu-Doped ZnO Surface
3.4.3. Structural and Compositional Analysis of Cu-Doped ZnO Post-Sensed Films Obtained from Copper Chloride and CO Gas Sensitivity
4. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Gómez-Pozos, H.; Arredondo, E.J.L.; Maldonado Álvarez, A.; Biswal, R.; Kudriavtsev, Y.; Pérez, J.V.; Casallas-Moreno, Y.L.; Olvera Amador, M.D.l.L. Cu-Doped ZnO Thin Films Deposited by a Sol-Gel Process Using Two Copper Precursors: Gas-Sensing Performance in a Propane Atmosphere. Materials 2016, 9, 87. https://doi.org/10.3390/ma9020087
Gómez-Pozos H, Arredondo EJL, Maldonado Álvarez A, Biswal R, Kudriavtsev Y, Pérez JV, Casallas-Moreno YL, Olvera Amador MDlL. Cu-Doped ZnO Thin Films Deposited by a Sol-Gel Process Using Two Copper Precursors: Gas-Sensing Performance in a Propane Atmosphere. Materials. 2016; 9(2):87. https://doi.org/10.3390/ma9020087
Chicago/Turabian StyleGómez-Pozos, Heberto, Emma Julia Luna Arredondo, Arturo Maldonado Álvarez, Rajesh Biswal, Yuriy Kudriavtsev, Jaime Vega Pérez, Yenny Lucero Casallas-Moreno, and María De la Luz Olvera Amador. 2016. "Cu-Doped ZnO Thin Films Deposited by a Sol-Gel Process Using Two Copper Precursors: Gas-Sensing Performance in a Propane Atmosphere" Materials 9, no. 2: 87. https://doi.org/10.3390/ma9020087