Effects of tin concentration on the electrical properties of room-temperature ion-beam-assisted-evaporation-deposited indium oxide thin films

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Abstract

Tin-doped indium oxide (ITO) thin films were deposited at room temperature by a dual-oxygen-ion-beam-assisted evaporator system and the effects of doped tin concentrations in the films on the electrical properties of the ITO films were investigated. Doped tin atoms in amorphous ITO films caused extra scattering and structural defects due to the inactivation of tin atoms in the films. Therefore, increasing the tin concentration decreased the conductivity. The lowest resistivity of indium oxide (IO) and ITO obtained was 3.6 × 10-4 Ω-cm for IO and 4 × 10-4 -7 × 10-4 Ω-cm for 5-25 wt% SnO2. The mobility and mean free path of these films were 20-63 cm2/V·s and 3.3-7.4 nm, respectively.

Original languageEnglish
Pages (from-to)L999-L1001
JournalJapanese Journal of Applied Physics
Volume41
Issue number9 A/B
DOIs
StatePublished - 15 Sep 2002

Keywords

  • Amorphous
  • Defect
  • ITO
  • Room temperature
  • Scattering

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