PHOTOINDUCED ABSORPTION OF CONJUGATED POLYMER C-60 SOLUTIONS - EVIDENCE OF TRIPLET-STATE PHOTOEXCITATIONS AND TRIPLET-ENERGY TRANSFER IN POLY(3-ALKYLTHIOPHENE)

Authors
JANSSEN RAJ SARICIFTCI NS HEEGER AJ
Citation
Raj. Janssen et al., PHOTOINDUCED ABSORPTION OF CONJUGATED POLYMER C-60 SOLUTIONS - EVIDENCE OF TRIPLET-STATE PHOTOEXCITATIONS AND TRIPLET-ENERGY TRANSFER IN POLY(3-ALKYLTHIOPHENE), The Journal of chemical physics, 100(12), 1994, pp. 8641-8645
Citations number
35
Categorie Soggetti
Physics, Atomic, Molecular & Chemical
Journal title
The Journal of chemical physics → ACNP
ISSN journal
00219606
Volume
100
Issue
12
Year of publication
1994
Pages
8641 - 8645
Database
ISI
SICI code
0021-9606(1994)100:12<8641:PAOCPC>2.0.ZU;2-2
Abstract
We present spectral evidence of the efficient photogeneration of tripl er-state excitations in poly(3-alkylthiophene): P3AT, solutions, The s teady-state photoinduced absorption spectra display a PIA band centere d at 1.50 eV which is attributed to a dipole-allowed triplet-triplet t ransition. Photoexcitation of P3AT solutions containing C-60, results in an efficient energy transfer reaction and provides an estimate for the P3AT triplet-state energy of 1.57-1.72 eV.