Synthesis and characterization of SnO₂-ZnO composite thin films deposited via spray pyrolysis

Authors

Aldrin S Bendal ⋅ PH Materials Science and Engineering Program, University of the Philippines Diliman and National Institute of Physics, University of the Philippines Diliman
Arven Cafe ⋅ PH Materials Science and Engineering Program, University of the Philippines Diliman and National Institute of Physics, University of the Philippines Diliman
Yuta Rola ⋅ PH Materials Science and Engineering Program, University of the Philippines Diliman and National Institute of Physics, University of the Philippines Diliman
Efren Suratos ⋅ PH Materials Science and Engineering Program, University of the Philippines Diliman and National Institute of Physics, University of the Philippines Diliman
Horace Husay ⋅ PH National Institute of Physics, University of the Philippines Diliman
Elmer Estacio ⋅ PH National Institute of Physics, University of the Philippines Diliman
Arnel Salvador ⋅ PH National Institute of Physics, University of the Philippines Diliman
Armando Somintac ⋅ PH National Institute of Physics, University of the Philippines Diliman

Abstract

Composite films based from tin dioxide (SnO₂) and zinc oxide (ZnO) was synthesized on a glass substrate via spray pyrolysis at a substrate temperature of 350°C. SnO₂-ZnO composite films were obtained by varying the volumetric amount of zinc acetate precursor solution (25 vol%, 50 vol%, and 75 vol%). The results of scanning electron microscopy and X-ray diffraction analysis showed an increase in the grain size of the composite film as the ZnO volume ratio increased. UV-Vis spectroscopy revealed a decrease in the transmittance spectra of the composite films with zinc acetate volume concentrations of 50%, which is due to thicker film achieved at 50-50 combination of the films. The optical band gap energy was computed by extrapolating the straight line in the Tauc's plot to zero. The computed optical band gap has a decreasing trend as the ZnO volume ratio increases.

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Issue

2017: Proceedings of the 35th Samahang Pisika ng Pilipinas Physics Conference

Article ID

SPP-2017-PA-27

Section

Poster Session A (Materials Science, Instrumentation, and Photonics)

Published

2017-06-07

How to Cite

[1]

AS Bendal, A Cafe, Y Rola, E Suratos, H Husay, E Estacio, A Salvador, and A Somintac, Synthesis and characterization of SnO2-ZnO composite thin films deposited via spray pyrolysis, Proceedings of the Samahang Pisika ng Pilipinas 35, SPP-2017-PA-27 (2017). URL: https://proceedings.spp-online.org/article/view/219.