Surface Analysis and Optical Properties of Cu-Doped ZnO Thin Films Deposited by Radio Frequency Magnetron Sputtering
In this study, Cu-doped ZnO (CZO) thin films were grown on glass substrates by using the radio frequency magnetron sputtering technique. The effects of Cu doping on the structural, surface morphological, optical properties, and wettability behaviors of CZO thin films were investigated by X-ray diffr...
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doaj-e5b73bfc7c7f41f88664c73c54580abf2020-11-24T22:20:12ZengMDPI AGCoatings2079-64122018-07-018826610.3390/coatings8080266coatings8080266Surface Analysis and Optical Properties of Cu-Doped ZnO Thin Films Deposited by Radio Frequency Magnetron SputteringGuo-Ju Chen0Sheng-Rui Jian1Jenh-Yih Juang2Department of Materials Science and Engineering, I-Shou University, Kaohsiung 840, TaiwanDepartment of Materials Science and Engineering, I-Shou University, Kaohsiung 840, TaiwanDepartment of Electrophysics, National Chiao Tung University, Hsinchu 300, TaiwanIn this study, Cu-doped ZnO (CZO) thin films were grown on glass substrates by using the radio frequency magnetron sputtering technique. The effects of Cu doping on the structural, surface morphological, optical properties, and wettability behaviors of CZO thin films were investigated by X-ray diffraction (XRD), atomic force microscopy (AFM), UV-Visible spectroscopy, and contact angle measurement, respectively. The XRD results indicated that all CZO thin films were textured, having a preferential crystallographic orientation along the hexagonal wurtzite (002) axis. The average transmittance in the visible wavelength region was above 80% for all CZO thin films. The optical band gap of the CZO films decreased from 3.18 to 2.85 eV when the Cu-doping was increased from 2% to 10%. In addition, the water contact angle measurements were carried out to delineate the Cu-doping effects on the changes in the surface energy and wettability of the films.http://www.mdpi.com/2079-6412/8/8/266Cu-doped ZnO thin filmXRDAFMUV-Vissurface energy |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Guo-Ju Chen Sheng-Rui Jian Jenh-Yih Juang |
spellingShingle |
Guo-Ju Chen Sheng-Rui Jian Jenh-Yih Juang Surface Analysis and Optical Properties of Cu-Doped ZnO Thin Films Deposited by Radio Frequency Magnetron Sputtering Coatings Cu-doped ZnO thin film XRD AFM UV-Vis surface energy |
author_facet |
Guo-Ju Chen Sheng-Rui Jian Jenh-Yih Juang |
author_sort |
Guo-Ju Chen |
title |
Surface Analysis and Optical Properties of Cu-Doped ZnO Thin Films Deposited by Radio Frequency Magnetron Sputtering |
title_short |
Surface Analysis and Optical Properties of Cu-Doped ZnO Thin Films Deposited by Radio Frequency Magnetron Sputtering |
title_full |
Surface Analysis and Optical Properties of Cu-Doped ZnO Thin Films Deposited by Radio Frequency Magnetron Sputtering |
title_fullStr |
Surface Analysis and Optical Properties of Cu-Doped ZnO Thin Films Deposited by Radio Frequency Magnetron Sputtering |
title_full_unstemmed |
Surface Analysis and Optical Properties of Cu-Doped ZnO Thin Films Deposited by Radio Frequency Magnetron Sputtering |
title_sort |
surface analysis and optical properties of cu-doped zno thin films deposited by radio frequency magnetron sputtering |
publisher |
MDPI AG |
series |
Coatings |
issn |
2079-6412 |
publishDate |
2018-07-01 |
description |
In this study, Cu-doped ZnO (CZO) thin films were grown on glass substrates by using the radio frequency magnetron sputtering technique. The effects of Cu doping on the structural, surface morphological, optical properties, and wettability behaviors of CZO thin films were investigated by X-ray diffraction (XRD), atomic force microscopy (AFM), UV-Visible spectroscopy, and contact angle measurement, respectively. The XRD results indicated that all CZO thin films were textured, having a preferential crystallographic orientation along the hexagonal wurtzite (002) axis. The average transmittance in the visible wavelength region was above 80% for all CZO thin films. The optical band gap of the CZO films decreased from 3.18 to 2.85 eV when the Cu-doping was increased from 2% to 10%. In addition, the water contact angle measurements were carried out to delineate the Cu-doping effects on the changes in the surface energy and wettability of the films. |
topic |
Cu-doped ZnO thin film XRD AFM UV-Vis surface energy |
url |
http://www.mdpi.com/2079-6412/8/8/266 |
work_keys_str_mv |
AT guojuchen surfaceanalysisandopticalpropertiesofcudopedznothinfilmsdepositedbyradiofrequencymagnetronsputtering AT shengruijian surfaceanalysisandopticalpropertiesofcudopedznothinfilmsdepositedbyradiofrequencymagnetronsputtering AT jenhyihjuang surfaceanalysisandopticalpropertiesofcudopedznothinfilmsdepositedbyradiofrequencymagnetronsputtering |
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1725776400372203520 |