Transient absorption and luminescence studies of the relaxation processes of the photoexcited states in wide gap MX-chain compounds

Citation
Y. Wada et al., Transient absorption and luminescence studies of the relaxation processes of the photoexcited states in wide gap MX-chain compounds, SYNTH METAL, 116(1-3), 2001, pp. 397-400
Citations number
28
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SYNTHETIC METALS
ISSN journal
0379-6779 → ACNP
Volume
116
Issue
1-3
Year of publication
2001
Pages
397 - 400
Database
ISI
SICI code
0379-6779(20010115)116:1-3<397:TAALSO>2.0.ZU;2-A
Abstract
Millisecond transient luminescence and absorption spectra of wide gap MX-ch ain compound, [Pd(en)(2)][Pt(en)(2)Br-2](ClO4)(4), have been measured. A de layed luminescence band has been found at 1.55 eV. The time evolution of th e intensity of the luminescence is proportional to the first derivative of the intensity of the photoinduced polaron absorption. The delayed luminesce nce band is considered to be caused by the radiative recombination of the s elf-trapped excitons which are generated in the annihilation processes of t he polarons. (C) 2001 Elsevier Science B.V. All rights reserved.