Photoluminescence from the even-parity state in polythiophene derivative

Authors
Kobayashi, T Hamazaki, J Arakawa, M Kunugita, H Endo, T Rikukawa, M Sanui, K Ema, K
Citation
T. Kobayashi et al., Photoluminescence from the even-parity state in polythiophene derivative, J PHYS JPN, 70(9), 2001, pp. 2517-2520
Citations number
22
Categorie Soggetti
Physics
Journal title
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
ISSN journal
00319015 → ACNP
Volume
70
Issue
9
Year of publication
2001
Pages
2517 - 2520
Database
ISI
SICI code
0031-9015(200109)70:9<2517:PFTESI>2.0.ZU;2-U
Abstract
The time-resolved photoluminescence spectrum of a polythiophene derivative has been analyzed from the viewpoint of the vibronic structure and its dyna mics. We found that the photoluminescence (PL) originates from two vibronic coupled states which consist of the odd-parity 1B(u) component and the eve n-parity 2A(g) component. Since the fluorescences from the two states have different time constants and different vibronic structures, the PL shows a biexponential decay and a spectral change.