Bias sputtering and characterization of LiCoO2 thin film cathodes for thin film microbattery

H. Y. Park, S. R. Lee, Y. J. Lee, B. W. Cho, W. I. Cho

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

LiCoO2 thin films, which could be used as a cathode material in microbatteries, have been deposited by radio-frequency (rf) magnetron sputtering with various substrate biases as process parameter. The substrate bias during deposition has influenced the electrochemical properties of thin film electrode, and it could be found by charge-discharge test and cyclic voltammogram. We could obtain LiCoO2 thin film cathodes, which can be used directly, without annealing, for the complete thin film battery. The variations of electrochemical properties with substrate bias are related to micro-structural changes due to the ion bombardment, which delivers energy to the growing film. The bias sputtering of LiCoO2 is suggested as the promising method to fabricate thin film microbatteries.

Original languageEnglish
Pages (from-to)70-78
Number of pages9
JournalMaterials Chemistry and Physics
Volume93
Issue number1
DOIs
Publication statusPublished - 2005 Sep 15

Keywords

  • Bias sputtering
  • Cathode
  • LiCoO
  • Microbattery
  • Thin film
  • Thin film battery

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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