Decay kinetics of the 4.4-eV photoluminescence associated with the two states of oxygen-deficient-type defect in amorphous SiO2

Hiroyuki Nishikawa, Eiki Watanabe, Daisuke Ito, Yoshimichi Ohki

研究成果: Article

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We present the first observation of 4.4 eV photoluminescence (PL) decay in an oxygen-deficient-type silica excited with ultraviolet and vacuum ultraviolet photons from synchrotron radiation. The lifetime of the 4.4 eV PL is 4.2, 4.3, and 2.1 ns for the 5.0, 6.9, and 7.6 eV excitations, respectively, indicating the presence of multiple decay channels. This can be explained by an energy diagram involving the interconversion between two states of the oxygen-deficient-type defect.

元の言語English
ページ(範囲)2101-2104
ページ数4
ジャーナルPhysical Review Letters
72
発行部数13
DOI
出版物ステータスPublished - 1994 1 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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