Photoinduced Absorption Study of Sexithiophene; Evidence for Photogeneration of Polarons

J. Poplawskp; E. Ehrenfreund; J. Cornil; J. L. Bredas; R. Pughc; M. Ibrahim; A. J. Frank

doi:10.1080/10587259408039270

Photoinduced Absorption Study of Sexithiophene; Evidence for Photogeneration of Polarons

J. Poplawskp, E. Ehrenfreund, J. Cornil, J. L. Bredas, R. Pughc, M. Ibrahim, A. J. Frank

Chemistry and Nanoscience

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Abstract

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).

Original language	American English
Pages (from-to)	407-413
Number of pages	7
Journal	Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals
Volume	256
Issue number	1
DOIs	https://doi.org/10.1080/10587259408039270 https://doi.org/10.1080/10587259408039270
State	Published - 1994

NREL Publication Number

ACNR/JA-16488

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Poplawskp, J., Ehrenfreund, E., Cornil, J., Bredas, J. L., Pughc, R., Ibrahim, M., & Frank, A. J. (1994). Photoinduced Absorption Study of Sexithiophene; Evidence for Photogeneration of Polarons. Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals, 256(1), 407-413. https://doi.org/10.1080/10587259408039270, https://doi.org/10.1080/10587259408039270

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title = "Photoinduced Absorption Study of Sexithiophene; Evidence for Photogeneration of Polarons",

abstract = "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).",

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

year = "1994",

doi = "10.1080/10587259408039270",

language = "American English",

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pages = "407--413",

journal = "Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals",

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Poplawskp, J, Ehrenfreund, E, Cornil, J, Bredas, JL, Pughc, R, Ibrahim, M & Frank, AJ 1994, 'Photoinduced Absorption Study of Sexithiophene; Evidence for Photogeneration of Polarons', Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals, vol. 256, no. 1, pp. 407-413. https://doi.org/10.1080/10587259408039270, https://doi.org/10.1080/10587259408039270

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.

PY - 1994

Y1 - 1994

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).

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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 -

Photoinduced Absorption Study of Sexithiophene; Evidence for Photogeneration of Polarons

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