Structural, optical and ammonia sensing properties of nanostructured ZnO thin films deposited by spray pyrolysis technique
In the present work, nanostructured ZnO thin films have been synthesized using spray pyrolysis technique by using the precursor solution of zinc acetate at 0.05, 0.1 and 0.15 M Concentration. X-ray diffraction patterns confirmed the polycrystalline nature of the films with hexagonal structure. The field-emission scanning electron micrograph of all the samples revealed the spherical grain value and the morphology undergoes a change according to molarity concentration. The ammonia (NH3) sensing properties of the films were performed at room temperature and the sensing responses of the samples towards NH3 concentrations were recorded.
KeywordsSpray Pyrolysis Zinc Acetate Hexagonal Wurtzite Structure Zinc Acetate Dihydrate Spray Pyrolysis Technique
Authors wish to acknowledge to Department of Nano Science and Technology, Karunya University, Coimbatore to provide XRD & UV. The author also wishes to express their sincere thanks to Coimbatore Institute of Technology, Coimbatore, SASTRA University, Thanjavur and Alagappa University, Karaikudi to provide FE-SEM, EDX, Sensor facilities and thin film thickness measuring facilities. One of the authors, MS sincerely thanks the Defence Research Development Organization, Govt. India for the financial support (Grant: 0903810-1229).
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