Characterization of undoped and copper-doped zinc oxide thin films deposited via spray pyrolysis

Authors

  • Lorenzo P. Lopez, Jr. Department of Science and Biology, Miriam College
  • Maria Angela B. Faustino Materials Science and Engineering Program, University of the Philippines Diliman
  • Vladimir M. Sarmiento Materials Science and Engineering Program, University of the Philippines Diliman
  • Mae Agatha C. Tumanguil Materials Science and Engineering Program, University of the Philippines Diliman
  • Vernalyn C. Copa Materials Science and Engineering Program, University of the Philippines Diliman
  • Alexander E. De los Reyes National Institute of Physics, University of the Philippines Diliman
  • Arnel A. Salvador National Institute of Physics, University of the Philippines Diliman
  • Elmer S. Estacio National Institute of Physics, University of the Philippines Diliman
  • Armando S. Somintac National Institute of Physics, University of the Philippines Diliman

Abstract

Undoped and copper-doped zinc oxide thin films were deposited via spray pyrolysis. Based on their x-ray diffraction pattern, the deposited films exhibit hexagonal wurtzite crystal. From the transmittance data, optical band gap of the films was computed using Tauc relation. Upon doping with copper, band gap of zinc oxide decreases from 3.26 eV to 3.17 eV which indicates that copper atom is located at the substitutional sites of the zinc oxide lattice. The relatively lower reflectance of copper-doped zinc oxide is attributed to its poor crystallinity that resulted to higher absorbance. As such, the copper-doped zinc oxide can be used as an antireflection coating material for optoelectronic devices.

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Article ID

SPP-2016-3C-06

Section

Condensed Matter Physics and Materials Science

Published

2016-08-18

How to Cite

[1]
LP Lopez, MAB Faustino, VM Sarmiento, MAC Tumanguil, VC Copa, AE De los Reyes, AA Salvador, ES Estacio, and AS Somintac, Characterization of undoped and copper-doped zinc oxide thin films deposited via spray pyrolysis, Proceedings of the Samahang Pisika ng Pilipinas 34, SPP-2016-3C-06 (2016). URL: https://proceedings.spp-online.org/article/view/SPP-2016-3C-06.