F Center Formation by Photoconversion in KCl Crystals Containing S-- Ions
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- Mito Kazuyuki
- Department of Applied Physics, Faculty of Engineering, Tohoku University
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- Hirai Masamitsu
- Department of Applied Physics, Faculty of Engineering, Tohoku University
書誌事項
- タイトル別名
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- F Center Formation by Photoconversion in KCl Crystals Containing S<SUP>−−</SUP> Ions
- F Center Formation by Photoconversion i
- F Center Formation by Photoconversion in KCI Crystals Containing S<sup>-</sup>Ions
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F center formation connected with S−− ions in KCl single crystals has been investigated under UV (4.9 eV) light illumination. Following results are obtained. (1) Luminescence bands at 3.16 eV and 2.57 eV due to S−− ions are observed at low temperatures, but the former luminescence quenches with an activation energy of ∼260 meV above ∼180 K. (2) The F center and a center called X center are produced by UV illumination above ∼200 K instead of the luminescence, but there is no complete complemental correlation between temperature dependence of the luminescence quenching and of the X and F center formation. (3) The X center may be an F center perturbed by the nearest S− ion, i.e. [S−+F] in a ⟨110⟩ direction, and exhibits three absorption bands at 1.9 eV, 2.1 eV and 2.3 eV. (4) The X centers are converted thermally to the F centers, possibly by dissociation of [S−+F] with an activation energy of ∼550 meV above ∼250 K. Conversion mechanism is discussed.
収録刊行物
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- Ｊｏｕｒｎａｌ ｏｆ ｔｈｅ Ｐｈｙｓｉｃａｌ Ｓｏｃｉｅｔｙ ｏｆ Ｊａｐａｎ
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Ｊｏｕｒｎａｌ ｏｆ ｔｈｅ Ｐｈｙｓｉｃａｌ Ｓｏｃｉｅｔｙ ｏｆ Ｊａｐａｎ 56 (5), 1874-1880, 1987
一般社団法人 日本物理学会
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詳細情報 詳細情報について
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- CRID
- 1390282679162628864
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- NII論文ID
- 110001960429
- 210000093343
- 130003739887
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- NII書誌ID
- AA00704814
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- BIBCODE
- 1987JPSJ...56.1874M
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- COI
- 1:CAS:528:DyaL2sXlt1Crtr8%3D
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- ISSN
- 13474073
- 00319015
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- NDL書誌ID
- 3127368
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
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- 使用不可