Intrinsic luminescence in PbBr2 crystals under one- and two-photon excitation

Authors
Iwanaga, M Watanabe, M Hayashi, T
Citation
M. Iwanaga et al., Intrinsic luminescence in PbBr2 crystals under one- and two-photon excitation, J LUMINESC, 87-9, 2000, pp. 287-289
Citations number
6
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF LUMINESCENCE
ISSN journal
00222313 → ACNP
Volume
87-9
Year of publication
2000
Pages
287 - 289
Database
ISI
SICI code
0022-2313(200005)87-9:<287:ILIPCU>2.0.ZU;2-V
Abstract
We studied luminescence properties in PbBr2 crystals under one- and two-pho ton excitation, and found that a luminescence band at 2.56 eV is intrinsic in origin. Decay time measurements revealed the exciton relaxation process in which an exciton is decomposed into a charge-separated pair of a self-tr apped electron (STEL) and a self-trapped hole (STH). The relaxation process is ascribed to strong interaction of electrons and holes with phonons. (C) 2000 Elsevier Science B.V. All rights reserved.