In-situ observation of the electrical conductivity upon release and uptake of oxygen in indium tin oxide sinter

Takahisa Omata, Hiroyuki Fujiwara, Shinya Otsuka-Yao-Matsuo, Naoki Ono

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

The electrical conductivity, the oxygen release and uptake of sintered indium tin oxide (ITO) upon heating and cooling under the condition that P(O2)/P* = 4.9 × 10-4 (P*=atmospheric pressure), when P(O2) was approximately 50 Pa, were simultaneously observed. Two kinds of oxygen release and uptake were detected in the different temperature ranges of 973 < T < 1130 K and 1130 < T < 1273 K. Electrical conductivity was increased as a result of the increase in carrier concentration due to oxygen release at the higher temperature, although the conductivity was not altered by the oxygen release at the lower temperature. Decrease in the mobility of conduction electrons could be explained in terms of the increase in the concentration of the scattering centers induced by release and uptake of oxygen atoms.

Original languageEnglish
Pages (from-to)868-871
Number of pages4
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume37
Issue number3 A
DOIs
Publication statusPublished - 1998 Mar
Externally publishedYes

Keywords

  • Carrier-generation by oxygen release
  • Electrical conductivity
  • Indium tin oxide
  • Oxygen release and uptake

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

Fingerprint

Dive into the research topics of 'In-situ observation of the electrical conductivity upon release and uptake of oxygen in indium tin oxide sinter'. Together they form a unique fingerprint.

Cite this