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Abstract

Introduction: ZnO-based thin films, known as potential transparent-conducting oxides (TCO), have still attracted much attention in applications for good-performance electrodes and inner layers in solar cells. Recently, the research tendency has focused on improving carrier mobility rather than carrier concentration to enhance performance and response speed of TCO thin films. In this work, Indium, and Hydrogen co-doped ZnO (HIZO) thin films were deposited by using DC magnetron sputtering technique in hydrogen-plasma atmosphere.


Methods: Indium-doped ZnO ceramics were used as sputtering targets, in which, Indium content varied from 0.07 to 1.0 at.%. The electrical, optical, structural and surface morphological properties of the as-deposited films were investigated by using Hall effect-based measurement, UV-Vis spectra, X-ray diffraction (XRD) and fieldemission scanning electron microscopy (FE-SEM), respectively.


Results: As a result, the HIZO films sputtered from the 0.1 at.% In-doped ZnO target and at H2/(H2+Ar) ratio of 3.5% exhibit high electron mobility (47 cm2/Vs), the lowest resistivity (4.9x10-4 Ω.cm) and sheet resistance (4.7 Ω/sq.), simultaneously, high average transmittance (>80%) in the visible – near IR spectrum regions.


Conclusion: Based on these results, the HIZO films are considered as potential TCO thin films that can be well-used as transparent electrodes in solar cells.


 



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Article Details

Issue: Vol 22 No 2 (2019)
Page No.: 253-257
Published: Jun 25, 2019
Section: Natural Sciences - Research article
DOI: https://doi.org/10.32508/stdj.v22i2.1657

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Copyright: The Authors. This is an open access article distributed under the terms of the Creative Commons Attribution License CC-BY 4.0., which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 How to Cite
Truong, N., Nguyen, T., Pham, T. A., Hoang, D., Vu, H., Nguyen, H., Phan, T., & Tran, V. (2019). Influence of indium and hydrogen co-doping on optical and electrical properties of zinc oxide thin films deposited by DC magnetron sputtering. Science and Technology Development Journal, 22(2), 253-257. https://doi.org/https://doi.org/10.32508/stdj.v22i2.1657

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