Activation energy of AgInSbTe film through isothermal sheet resistance measurements

Chien Chih Chou, Fei Yi Hung, Truan Sheng Lui

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

RF sputtering was used to deposit AgInSbTe (AIST) films on silicon substrates. The as-deposited amorphous films were crystallized at temperatures above 413 K and the sheet resistance change was used to characterize the degree of crystallization and the associate activation energy in this study. The sheet resistance of amorphous films quickly decreased when the crystallization was initiated and reached a steady lower value with the IOC index of around 0.7, which means 70% crystallization. The kinetics of sheet resistance change was researched isothermally in an argon atmosphere and compared to the results of DSC measurement with constant heating rates. It was found that activation energy, 0.82eV. obtained from isothermal sheet resistance measurement was rather close to that. 0.92eV, obtained from DSC measurement. The Avrami exponent was determined to be 1.1-1.4 in isothermal sheet resistance measurement. A lower Avrami exponent implied that impingement effects possibly resulted in the sheet resistance decreasing with about 78% crystallization of amorphous films.

Original languageEnglish
Pages (from-to)258-264
Number of pages7
JournalMaterials Transactions
Volume48
Issue number2
DOIs
Publication statusPublished - 2007 Feb

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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