Luminescent V-Type Centers in Alkali Iodide Crystals Containing Divalent Cations
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概要
- 論文の詳細を見る
Optical absorption and luminescence due to trapped hole centers produced by X-irradiation at 140 K are investigated for Kl and Rbl doped with Mg", Ca", Sr",Ba" or Pb". In Ca"-doped Kl, absorption spectrum shows three bands peaking at367, 444 and 800 nm which arise from the same centers. Whern the sample is excitedwith light in any one of these bands at LNT, two emission bands peaking at 1540 and[715 nm are observed. The other samples show similar bands too. Besides formationand anisotropy of the absorption bands, anisotropy and temperature dependence ofthe luminescence are studied. Then it is suggested that the center inducing these bandsis a halogen atom stabilized by an I-V dipole. Interpretations are proposed for transi-lions inducing the absorption and luminescence. The vacancy model of the V centerproduced in halogen excess crystals is confirmed.
- 社団法人日本物理学会の論文
- 1988-10-15
著者
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Harami Tadahiko
Department Of Physics Ritsumeikan University
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Harami Tadahiko
Department Of Physics Faculty Of Science And Engineering Ritsumeikan University
関連論文
- Luminescence Decay of the V-Type Centers in KI Crystals Containing Divalent Cations
- Growth of Alkali Halide Crystals from Aqueous Solutions
- Optical Properties of KI Crystals Containing MnO^_4 or MnO^-_4 Ions
- Thermal Bleaching of V Bands at Room Temperature in Alkali Iodide Crystals Containing Excess Iodine
- Luminescence of V-Type Centers in Potassium and Rubidium Iodide Crystals
- V Bands in RbI Crystals Containing Excess Iodine
- V Centers in KI Crystals Containing Excess Iodine
- Luminescent V-Type Centers in Alkali Iodide Crystals Containing Divalent Cations
- Optical Bleaching of V Centers at Liquid Nitrogen Temperature in KI Crystals Containing Excess Iodine