Next Article in Journal
Glycerol-Plasticized Films Obtained from Whey Proteins Denatured at Alkaline pH
Previous Article in Journal
Reactive-Sputtered Prepared Tin Oxide Thin Film as an Electron Transport Layer for Planar Perovskite Solar Cells
Article Menu
Issue 5 (May) cover image

Export Article

Open AccessArticle

Synthesis and Characteristics of Zn-Doped CuCrO2 Transparent Conductive Thin Films

1,2,* and 1
Department of Photonics and Communication Engineering, Asia University, 500 Lioufeng Rd., Wufeng, Taichung 41354, Taiwan
Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 40402, Taiwan
Author to whom correspondence should be addressed.
Coatings 2019, 9(5), 321;
Received: 23 February 2019 / Revised: 18 April 2019 / Accepted: 30 April 2019 / Published: 15 May 2019
PDF [4121 KB, uploaded 15 May 2019]
  |     |  


The effects of doping a p-type CuCrO2 film with zinc on its structural and optoelectronic properties were investigated by experiments using CuCr1−xZnxO2 thin films (x = 0, 0.025, 0.065, 0.085). An increase in the amount of zinc dopant in the thin films affected the lattice constant and increased its Gibbs free energy of phase transformation. Cross-sectional images of the CuCrO2 thin film samples exhibited a dense polygonal microstructure and a surface morphology with protruding nanoscale granules. With the increase in the amount of Zn dopant, the surface roughness decreased, thereby increasing the amount of incident photons as well as the visible-light transmittance and ultraviolet-light absorption of the thin films. With the zinc doping in the CuCrO2 thin films, the band gap increased from 3.09 to 3.11 eV. The substitution of Cr3+ with Zn2+ forms hole carriers in the crystals, which was demonstrated by X-ray photoelectron spectroscopy and Hall effect measurements. The conductivities and carrier concentrations of the Zn-doped CuCrO2 thin films were greater than those of undoped CuCrO2. The CuCr1−xZnxO2 film (x = 0.065) exhibited the best optoelectronic properties; its carrier concentration and resistivity were 1.88 × 1017 cm−3 and 3.82 Ωcm, respectively. View Full-Text
Keywords: CuCrO2; zinc-doped; thin film; structure; optoelectronic properties CuCrO2; zinc-doped; thin film; structure; optoelectronic properties

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Yu, R.-S.; Chu, C. Synthesis and Characteristics of Zn-Doped CuCrO2 Transparent Conductive Thin Films. Coatings 2019, 9, 321.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Coatings EISSN 2079-6412 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top