2004年6月
Time-resolved photo-luminescence due to STE in TlBr doped with I- ions
JOURNAL OF LUMINESCENCE
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- 巻
- 108
- 号
- 1-4
- 開始ページ
- 81
- 終了ページ
- 84
- 記述言語
- 英語
- 掲載種別
- DOI
- 10.1016/j.jlumin.2004.01.015
- 出版者・発行元
- ELSEVIER SCIENCE BV
Luminescence spectra have been measured in TlBr doped with iodine ions under pulsed-light excitation. Two broad emission bands were observed at 2.2 and 2.45 eV. The emission band at 2.2 eV decays non-exponentially below 20 K and was attributed to radiative annihilation of a localized exciton bound to an I- ion formed by tunneling a hole to an electron trapped at a distant lattice position. The emission band at 2.45 eV, which decayed with two time constants of 0.5 mus and less than 20 ns, was attributed to annihilation of a perturbed self-trapped exciton. The luminescence decay of the 2.45 eV band was analyzed by rate equations, assuming that the initial states of the emission were composed of doubly-degenerate singlet-triplet mixed states and a triplet state. (C) 2004 Elsevier B.V. All rights reserved.
- リンク情報
- ID情報
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- DOI : 10.1016/j.jlumin.2004.01.015
- ISSN : 0022-2313
- Web of Science ID : WOS:000221572000016