Receptor function of small semiconductor crystals with clean and electron-traps dispersed surfaces

N. Yamazoe, Kengo Shimanoe

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

Theoretical exploration has been conducted to formulate the receptor function and response of a semiconductor gas sensor using thin plate-like crystals. The receptor function can be formulated over a wide range of depletion from conventional one (regional depletion) to new type one (volume depletion) by focusing attention on how the surface density of adsorbed oxygen ions (O-) is related with chemical moiety outside the crystals and physical moiety inside. The responses to gases thus derived are inversely proportional to the thickness of the plates used in the range of volume depletion. Electron-traps, if dispersed on the crystals, are shown to exert drastic effects in promoting sensitivity to gases.

Original languageEnglish
Pages (from-to)6148-6155
Number of pages8
JournalThin Solid Films
Volume517
Issue number22
DOIs
Publication statusPublished - Sep 30 2009

Fingerprint

Electron traps
depletion
traps
Semiconductor materials
Crystals
Gases
crystals
electrons
gases
Chemical sensors
thin plates
oxygen ions
Ions
Oxygen
sensitivity
sensors

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

Cite this

Receptor function of small semiconductor crystals with clean and electron-traps dispersed surfaces. / Yamazoe, N.; Shimanoe, Kengo.

In: Thin Solid Films, Vol. 517, No. 22, 30.09.2009, p. 6148-6155.

Research output: Contribution to journalArticle

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