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

Authors

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

2016: Proceedings of the 34th Samahang Pisika ng Pilipinas Physics Conference

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.