The Transient Absorption Due to Self-Trapped Excitons Localized at Iodine Dimers in Alkali Halide Crystals

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概要

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• The transient absorption spectra of a self-trapped exciton (STE) localized at iodine dimers (I^<2-*>_2) in iodine-doped alkali chloride and bromide crystals (AX : I ; A=Na, K, Rb ; X=Cl, Br) have been investigated. The absorption bands due to electron-transitions appear below 1 eV, and the bands due to hole-transitions around 1.5 and 3.0 eV. The absorption bands due to the electron-transitions are located in much lower energy region than those of intrinsic STEs in nominally pure alkali chloride or bromide crystals. The bands due to the hole-transitions are very similar to those of Vk (I^-_2) centers in alkali iodide crystals. These results suggest that the STE localized at iodine dimers is in the "on-center" configuration and its electronic state is diffused in comparison with that of "off-center" type STE.

• 社団法人日本物理学会の論文
• 1994-07-15

著者

• KONDO Yasuhiro

  Department of Animal Science and Technology, Okayama University Graduate School of Natural Science a

• Hirai M

  Osaka Univ. Osaka Jpn

• Hirai M

  Research Laboratory For Surface Science Faculty Of Science Okayama University

• EDAMATSU Keiichi

  Department of Applied Physics,Tohoku University

• HIRAI Masamitsu

  Department of Applied Physics,Faculty of Engineering,Tohoku University

• Hirai Masaaki

  Research Laboratory For Surface Science Faculty Of Science Okayama University

• Edamatsu K

  Tohoku Univ. Sendai Jpn

• Edamatsu Keiichi

  Department Of Applied Physics Faculty Of Engineering Tohoku University

• Hirota Shoichi

  Department of Applied Physics, Faculty of Engineering, Tohoku University

• Hirota Shoichi

  Department Of Applied Physics Faculty Of Engineering Tohoku University

• Hirai Masamitsu

  Department Of Applied Physics Faculty Of Engineering Tohoku University

• Kondo Yasuhiro

  Department Of Applied Physics Faculty Of Engineering Tohoku University

• Kondo Yasuhiro

  Department Of Animal Science And Technology Okayama University Graduate School Of Natural Science An

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