Photogeneration of polarons in sexithiophene oligomers

J. Poplawski; E. Ehrenfreund; J. Cornil; J. L. Bredas; R. Pugh; M. Ibrahim; A. J. Frank

doi:10.1016/0379-6779(94)02506-T

Photogeneration of polarons in sexithiophene oligomers

J. Poplawski^*, E. Ehrenfreund, J. Cornil, J. L. Bredas, R. Pugh, M. Ibrahim, A. J. Frank

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

We present studies of neutral films of sexithiophene (6T) using the photoinduced absorption spectroscopy technique. We find two strong absorption bands very similar in energy (0.80 and 1.54 eV) and shape (both feature shoulders) to those found for the radical cation 6T^*+. In addition, there is a weak band (at 1.1 eV) similar in energy to that of the dication related band (1.2 eV for 6T⁺⁺). Measurements of the modulation frequency and temperature dependence of the photogenerated defects show that the main long lived nonlinear excitations are polarons (radical cations.).

Original language	English (US)
Pages (from-to)	401-402
Number of pages	2
Journal	Synthetic Metals
Volume	69
Issue number	1-3
DOIs	https://doi.org/10.1016/0379-6779(94)02506-T
State	Published - Mar 1 1995
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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title = "Photogeneration of polarons in sexithiophene oligomers",

abstract = "We present studies of neutral films of sexithiophene (6T) using the photoinduced absorption spectroscopy technique. We find two strong absorption bands very similar in energy (0.80 and 1.54 eV) and shape (both feature shoulders) to those found for the radical cation 6T*+. In addition, there is a weak band (at 1.1 eV) similar in energy to that of the dication related band (1.2 eV for 6T++). Measurements of the modulation frequency and temperature dependence of the photogenerated defects show that the main long lived nonlinear excitations are polarons (radical cations.).",

author = "J. Poplawski and E. Ehrenfreund and J. Cornil and Bredas, {J. L.} and R. Pugh and M. Ibrahim and Frank, {A. J.}",

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T1 - Photogeneration of polarons in sexithiophene oligomers

AU - Poplawski, J.

AU - Ehrenfreund, E.

AU - Cornil, J.

AU - Bredas, J. L.

AU - Pugh, R.

AU - Ibrahim, M.

AU - Frank, A. J.

PY - 1995/3/1

Y1 - 1995/3/1

N2 - We present studies of neutral films of sexithiophene (6T) using the photoinduced absorption spectroscopy technique. We find two strong absorption bands very similar in energy (0.80 and 1.54 eV) and shape (both feature shoulders) to those found for the radical cation 6T*+. In addition, there is a weak band (at 1.1 eV) similar in energy to that of the dication related band (1.2 eV for 6T++). Measurements of the modulation frequency and temperature dependence of the photogenerated defects show that the main long lived nonlinear excitations are polarons (radical cations.).

AB - We present studies of neutral films of sexithiophene (6T) using the photoinduced absorption spectroscopy technique. We find two strong absorption bands very similar in energy (0.80 and 1.54 eV) and shape (both feature shoulders) to those found for the radical cation 6T*+. In addition, there is a weak band (at 1.1 eV) similar in energy to that of the dication related band (1.2 eV for 6T++). Measurements of the modulation frequency and temperature dependence of the photogenerated defects show that the main long lived nonlinear excitations are polarons (radical cations.).

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U2 - 10.1016/0379-6779(94)02506-T

DO - 10.1016/0379-6779(94)02506-T

M3 - Article

AN - SCOPUS:0029274126

SN - 0379-6779

VL - 69

SP - 401

EP - 402

JO - Synthetic Metals

JF - Synthetic Metals

IS - 1-3

ER -

Photogeneration of polarons in sexithiophene oligomers

Abstract

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