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Effects of hydrogen treatment and substrate temperatures on the properties of Al-doped ZnO films

  • Hongbiao Zhou
  • , Huayu Zhang*
  • , Zhigang Wang
  • *Corresponding author for this work
  • Harbin Institute of Technology Shenzhen

Research output: Contribution to journalArticlepeer-review

Abstract

Al-doped ZnO (AZO) transparent conducting films were successfully prepared on glass substrates by radio-frequency (RF) magnetron sputtering. In order to reduce the resistivity of the thin films, the AZO film was hydrogenated with the addition of H 2 in the sputtering atmosphere. The effects of hydrogen ratio in the sputtering ambient and substrate temperature on the effectiveness of hydrogen incorporation in Al-doped ZnO films were investigated. The results show that hydrogen treatment can effectively reduce the resistivity of AZO thin films at low temperatures. At the low substrate temperature of 100°C, the high-quality AZO thin films with the lowest resistivity of 6.0 × 10 -4 Ω · cm can be obtained by adjusting the H 2 ratio in sputtering ambient. The resistivity of AZO thin film with hydrogen incorporation is less than 1/3 compared with that of thin film without hydrogen incorporation under the same condition. Moreover, the improvement of hydrogen treatment on electrical properties is gradually weakened with the substrate temperature increasing.

Original languageEnglish
Pages (from-to)83-87
Number of pages5
JournalFuhe Cailiao Xuebao/Acta Materiae Compositae Sinica
Volume29
Issue number5
StatePublished - Oct 2012
Externally publishedYes

Keywords

  • AZO thin films
  • Hydrogen treatment
  • RF magnetron sputtering
  • Resistivity
  • Substrate temperature

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