A NEW MODEL FOR THE VISIBLE EMISSION OF THE CSITL CRYSTAL

被引：60

作者：

NAGIRNYI, V

ZAZUBOVICH, S

ZEPELIN, V

NIKL, M

PAZZI, GP

机构：

[1] CZECHOSLOVAK ACAD SCI,INST PHYS,CS-16200 PRAGUE,CZECH REPUBLIC

[2] CNR,IROE,I-50127 FLORENCE,ITALY

来源：

CHEMICAL PHYSICS LETTERS | 1994年 / 227卷 / 4-5期

关键词：

D O I：

10.1016/0009-2614(94)00857-4

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Four emission bands, all belonging to the main thallium centre, are detected in a CsI:Tl crystal and their spectral, polarization and kinetic characteristics are studied at 1.7 to 320 K. Two weak ultraviolet bands (3.31 and 3.09 eV) are ascribed to electronic transitions from trigonal and tetragonal Jahn-Teller minima of the triplet relaxed excited state of Tl+. Two intense visible bands (2.55 and 2.25 eV) are assumed to arise from two different off-centre configurations of a self-trapped exciton perturbed by the Tl+ ion.

引用

页码：533 / 538

页数：6

共 17 条

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