Effect of N 2-gas flow rates on the structures and properties of copper nitride films prepared by reactive DC magnetron sputtering

Xing'Ao Li, Qiufei Bai, Jianping Yang, Yongtao Li, Lixia Wang, Haiyun Wang, Shanling Ren, Shengli Liu, Wei Huang

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

Copper nitride films were deposited on glass substrates by reactive DC magnetron sputtering at 100 °C substrate temperature. The influence of N 2-gas flow rates on the structure, resistivity and microhardness of deposited films was investigated. X-ray diffraction measurements showed that the films were composed of Cu 3N crystallites with anti-ReO 3 structure and exhibited preferential orientation to the [111] and [100]. The preferred crystalline orientation of the films changed with the N 2-gas flow rate, which should caused by the variation of Cu nitrification rate with N 2-gas flow rate. Additionally, the N 2-gas flow rate also affected the deposition rate, the resistivity and the microhardness of the Cu 3N films. The optimum N 2-gas flow rate for producing high-quality and well-oriented Cu 3N films on glass substrates is 5-10 sccm, where the substrate temperature is 100°C and the DC power is 50 W.

Original languageEnglish
Pages (from-to)78-81
Number of pages4
JournalVacuum
Volume89
Issue number1
DOIs
StatePublished - Mar 2013
Externally publishedYes

Keywords

  • Copper nitride thin film
  • DC magnetron sputtering
  • N -gas flow rates
  • Resistivity

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