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Titolo:
Relaxation dynamics of excitons in thin quaterthiophene films on differentsubstrates
Autore:
Hopmeier, M; Gebauer, W; Oestreich, M; Sokolowski, M; Umbach, E; Mahrt, RF;
Indirizzi:
Univ Wurzburg, D-97074 Wurzburg, Germany Univ Wurzburg Wurzburg Germany D-97074 rzburg, D-97074 Wurzburg, Germany Univ Marburg, Fachbereich Phys, D-35032 Marburg, Germany Univ Marburg Marburg Germany D-35032 eich Phys, D-35032 Marburg, Germany Univ Marburg, Wissensch Zentrum Mat Wissensch, D-35032 Marburg, Germany Univ Marburg Marburg Germany D-35032 Wissensch, D-35032 Marburg, Germany Univ Marburg, Inst Phys Chem, D-35032 Marburg, Germany Univ Marburg Marburg Germany D-35032 Phys Chem, D-35032 Marburg, Germany
Titolo Testata:
CHEMICAL PHYSICS LETTERS
fascicolo: 1-2, volume: 314, anno: 1999,
pagine: 9 - 15
SICI:
0009-2614(19991126)314:1-2<9:RDOEIT>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
OLIGOTHIOPHENE FILMS; CONJUGATED POLYMERS; OPTICAL-PROPERTIES; ORGANIC FILMS; ELECTROLUMINESCENCE; LUMINESCENCE; CRYSTAL; LIGHT;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
25
Recensione:
Indirizzi per estratti:
Indirizzo: Sokolowski, M Univ Wurzburg, Hubland, D-97074 Wurzburg, Germany Univ Wurzburg Hubland Wurzburg Germany D-97074 urg, Germany
Citazione:
M. Hopmeier et al., "Relaxation dynamics of excitons in thin quaterthiophene films on differentsubstrates", CHEM P LETT, 314(1-2), 1999, pp. 9-15

Abstract

We compare picosecond time-resolved photoluminescence spectra of thin polycrystalline films of quaterthiophene (4T) vapour deposited on two differentsubstrates: highly oriented pyrolytic graphite (HOPG) and glass. At zero time delay, both films show the same highly resolved vibrational fine structure as isolated 4T molecules. The fine structure remains over time on HOPG,but vanishes within the first 100 ps on glass and is replaced by emission from two luminescent traps. The results explain the line broadening in time-integrated (cw) spectra and yield information on the luminescence quenching in polycrystalline organic films. (C) 1999 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/12/20 alle ore 02:51:50