Gain dynamics in oriented thin films of an oligo(para-phenylene vinylene)

Authors
Pham, TA Barisien, T Grayer, V Guidoni, L Hadziioannou, G Bigot, JY
Citation
Ta. Pham et al., Gain dynamics in oriented thin films of an oligo(para-phenylene vinylene), CHEM P LETT, 318(4-5), 2000, pp. 459-465
Citations number
22
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
CHEMICAL PHYSICS LETTERS
ISSN journal
00092614 → ACNP
Volume
318
Issue
4-5
Year of publication
2000
Pages
459 - 465
Database
ISI
SICI code
0009-2614(20000225)318:4-5<459:GDIOTF>2.0.ZU;2-Z
Abstract
The dynamics of che photo-excited states in crystalline thin films of a mod el oligo(para-phenylene vinylene) is studied with femtosecond pump-probe sp ectroscopy. The process of amplified spontaneous emission and the correspon ding optical gain are shown to depend drastically on the crystallographic o rder present in the films, The results stress the important role of the mol ecular orientation in order to obtain efficient light-emitting conjugated o rganic devices. (C) 2000 Elsevier Science B.V. All rights reserved.