Photoconducting properties in oxygen-deficient Bi4Ti 3O12

Masaru Tada, Minoru Osada*, Masato Kakihana, Yuji Noguchi, Masaru Miyayama

*この研究の対応する著者

研究成果: Article査読

1 被引用数 (Scopus)

抄録

We investigated the influence of photoexcited nonequilibrium electrons in Bi4Ti3O12 which contains a high density of oxygen vacancies. As increasing oxygen deficiency, the photocurrent undergoes a rapid enhancement, accompanied by a remarkable change of kinetics. In heavily oxygen deficient Bi4Ti3O12-d (d=0.45), we observed dispersive photoconductivity, a behavior resembles with persistent photoconductivity phenomena in some perovskites. We argue that oxygen vacancies acting as trapping centers for electrons are linked to dispersive diffusion in the perovskite blocks, which control carrier recombination.

本文言語English
ページ(範囲)7-10
ページ数4
ジャーナルKey Engineering Materials
301
DOI
出版ステータスPublished - 2006
外部発表はい

ASJC Scopus subject areas

  • セラミックおよび複合材料
  • 化学工学(その他)

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