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

Authors

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