Effect of Ar/O2 gas ratios on the structure, electrical and optical properties of Na-doped ZnCdO film synthesized by magnetron sputtering

  • Zhong Hua
  • Yanping Song
  • Yingrui Sui
  • Yanjie Wu
  • Shiquan Lv
  • Bin Yao
  • Li Xiao
  • Zhanwu Wang
  • Xiaoyan Liu


Na-doped ZnCdO films [ZCO:Na] were grown on quartz substrates at different ratios of argon to oxygen gas flow (Ar:O2) by the radio frequency magnetron sputtering method. The influence of Ar:O2 ratio on structure, electrical and optical properties was investigated by using X-ray diffraction, X-ray photoelectron spectroscopy, Transmission electron microscopy, Hall measurements (Hall), optical absorption spectra and Photoluminescence. Results indicated that all obtained ZCO:Na thin films possess the hexagonal wurtzite structure and free from the formation of secondary phases. As the Ar:O2 ratios change from 1:5 to 5:1, at first the Eg increases with the Ar:O2 ratios increasing and reaches a maximum value at the Ar:O2 ratio of 1:1, then decreases evidently with the Ar:O2 ratios increasing continually. It is found that the lower Ar:O2 ratio is propitious to obtain n-type ZCO:Na film, while the relative higher Ar:O2 ratio is required to obtain p-type ZCO:Na thin films. When the Ar:O2 ratio is 1:1, the ZCO:Na film shows the best p-type conduction characteristics, which has a hole concentration of 1.13 × 1016 cm−3, Hall mobility of 2.54 cm2 V−1 s−1 and resistivity of 2.53 × 102 Ω cm. In addition, the mechanism of the influence of Ar:O2 ratio on the electrical and optical properties of the film as well as the mechanism of p-type conductivity was discussed in this work.


Magnetron Sputtering Radio Frequency Magnetron Sputtering NaZn ICDD Card Radio Frequency Reactive Magnetron 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



The authors would like to thank financial support of the National Natural Science Foundation of China under Grant Nos. 11254001, 61505067, 61475063, 11204104, the Program for the Development of Science and Technology of Jilin Province Grant No. 20150520086JH, the Program for New Century Excellent Talents in University Grant No. NCET-13-0824.


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Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  • Zhong Hua
    • 1
  • Yanping Song
    • 1
  • Yingrui Sui
    • 1
  • Yanjie Wu
    • 1
  • Shiquan Lv
    • 1
  • Bin Yao
    • 2
  • Li Xiao
    • 1
  • Zhanwu Wang
    • 1
  • Xiaoyan Liu
    • 1
  1. 1.Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of EducationJilin Normal UniversitySipingChina
  2. 2.State Key Laboratory of Superhard Materials and College of PhysicsJilin UniversityChangchunChina

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