TY - JOUR
T1 - Photoinduced absorption study of sexithiophene; evidence for photogeneration of polarons
AU - Poplawskp, J.
AU - Ehrenfreund, E.
AU - Cornil, J.
AU - Bredas, J. L.
AU - Pughc, R.
AU - Ibrahim, M.
AU - Frank, A. J.
N1 - Funding Information:
This work was supported by the US-Israel Binational Science Foundation (BSF 89-322), and by the fund for the promotion of research at the Technion. One of us, JC, is an Aspirant of the Belgian National Fund for Scientific Research (FNRS). The work in Mons is partly supported by the Belgian Government “Programme d’Impulsion en Technologie de 1’Information (IT/SC/22)” and “Pble d’Attraction Interuniversitaire en Chimie Supramoldculaire et Catalyse” , European Commission, FNRS/PRFC, and an IBM Academic Joint Study.
PY - 1994/11
Y1 - 1994/11
N2 - We have studied films of neutral 6T using photoinduced absorption spectroscopy. Two pairs of strong and weak narrow absorption lines are observed at 0.80 (strong), 0.96 (weak) and 1.54 (s), 1.68 (w) eV, respectively. They are very similar in energy, width and shape to those found in the radical cation 6T+. We therefore assign them to long lived photoinduced polarons (radical ions). The observed polaron spectrum is in very good agreement with energy level calculations of 6T. In addition, there is a weak separate line at 1.1 eV that is close in energy to the position of the dication related band (1.2 eV).
AB - We have studied films of neutral 6T using photoinduced absorption spectroscopy. Two pairs of strong and weak narrow absorption lines are observed at 0.80 (strong), 0.96 (weak) and 1.54 (s), 1.68 (w) eV, respectively. They are very similar in energy, width and shape to those found in the radical cation 6T+. We therefore assign them to long lived photoinduced polarons (radical ions). The observed polaron spectrum is in very good agreement with energy level calculations of 6T. In addition, there is a weak separate line at 1.1 eV that is close in energy to the position of the dication related band (1.2 eV).
UR - https://www.scopus.com/pages/publications/0040855373
UR - https://www.scopus.com/pages/publications/0040855373#tab=citedBy
U2 - 10.1080/10587259408039270
DO - 10.1080/10587259408039270
M3 - Article
AN - SCOPUS:0040855373
SN - 1058-725X
VL - 256
SP - 407
EP - 413
JO - Molecular Crystals and Liquid Crystals Science and Technology, Section A: Molecular Crystals and Liquid Crystals
JF - Molecular Crystals and Liquid Crystals Science and Technology, Section A: Molecular Crystals and Liquid Crystals
IS - 1
ER -