Absorption Bands of Paired-Ion Centers (Ga^+)_2, (In^+)_2 and (Tl^+)_2 in KI

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概要

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• Absorption spectra of KI containing high concentrations of Ga^+ and In^+ impurity ions are obtained at 2°K. New absorption bands which are due to the (Ga^+)_2 and (In^+)_2 paired-ion centers are observed at 4.04 and 4.51 eV in KI:Ga and at 3.75 and 4.25 eV in KI:In. The low-energy bands A' are unambiguously related to the A band and the high-energy bands C' to the C band. Trials have been made to understand the electronic structure of the paired-ion center in terms of the electronic structure of the single-ion center. The paired-ion-center absorption bands related to the C band are unambiguously assigned as follows: the C' band is due to the transition ^1？^+_g(^1A_<1g>)&roar;^1？^+_u(^1T_<1u>), and the band due to the transition ^1？^+_g(^1A_<1g>)&roar;^1П_u(^1T_<1u>) under- lies the C band. As for the paired-ion-center absorption bands related to the A band, two possible assignments are suggested.

• 社団法人日本物理学会の論文
• 1969-04-05

著者

• Fukuda Atsuo

  The Institute For Solid State Physics The University Of Tokyo

• Fukuda Atsuo

  The Institute For Optical Research Kyoiku University

• FUKUDA Atsuo

  The Institute for Solid State Physics, The University of Tokyo

関連論文

• Luminescence of KI Containing ns^2 Configuration Ions under Excitation by Exciton Absorption
• Investigation of Luminescence from Bound Excitons in KBr:I by Using Polarized Light
• Structure of the C Absorption Band of Tl^+-Type Centers in Alkali Halides Due to the Jahn-Teller Effect
• Investigation of Intrinsic Luminescence of KI Crystals by Using Polarized Light
• Absorption Bands of Paired-Ion Centers (Ga^+)_2, (In^+)_2 and (Tl^+)_2 in KI
• A, B and C Bands in KCl : In and KCl : Sn

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