Exciton self-trapping in MEH-PPV films studied by ultrafast emission depolarization

A  Ruseckas; I D W  Samuel

doi:10.1002/pssc.200562715

Exciton self-trapping in MEH-PPV films studied by ultrafast emission depolarization

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Depolarization of the transient absorption with a time constant of < 120 fs is observed in poly[2-(2'ethylhexyloxy)-5-methoxy-1,4-phenylenevinylene] (MEH-PPV) film. It is too fast to be explained by incoherent hopping. We attribute it to dynamic localization (self-trapping) of the initially delocalized excitons driven by structural relaxation of excited segments. Implications for charge carrier photogeneration are briefly disscussed. (c) 2006 WILEYNCH Veriag GmbH & Co. KGaA, Weinheim.

Original language	English
Title of host publication	Physica Status Solidi C - Current Topics in Solid State Physics, Vol 3, No 2
Editors	HB Brom
Place of Publication	WEINHEIM
Publisher	Wiley-VCH, Weinheim
Pages	263-266
Number of pages	4
DOIs	https://doi.org/10.1002/pssc.200562715
Publication status	Published - 2006
Event	11th International Conference on Transport in Interacting and Disordered Systems - Egmond aan Zee Duration: 21 Aug 2005 → 26 Aug 2005

Conference

Conference	11th International Conference on Transport in Interacting and Disordered Systems
City	Egmond aan Zee
Period	21/08/05 → 26/08/05

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10.1002/pssc.200562715

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@inproceedings{a41c59f5380e43e0b7ff10884afbc5dc,

title = "Exciton self-trapping in MEH-PPV films studied by ultrafast emission depolarization",

abstract = "Depolarization of the transient absorption with a time constant of < 120 fs is observed in poly[2-(2'ethylhexyloxy)-5-methoxy-1,4-phenylenevinylene] (MEH-PPV) film. It is too fast to be explained by incoherent hopping. We attribute it to dynamic localization (self-trapping) of the initially delocalized excitons driven by structural relaxation of excited segments. Implications for charge carrier photogeneration are briefly disscussed. (c) 2006 WILEYNCH Veriag GmbH & Co. KGaA, Weinheim.",

author = "A Ruseckas and Samuel, {I D W}",

year = "2006",

doi = "10.1002/pssc.200562715",

language = "English",

pages = "263--266",

editor = "HB Brom",

booktitle = "Physica Status Solidi C - Current Topics in Solid State Physics, Vol 3, No 2",

publisher = "Wiley-VCH, Weinheim",

address = "Germany",

note = "11th International Conference on Transport in Interacting and Disordered Systems ; Conference date: 21-08-2005 Through 26-08-2005",

}

Ruseckas, A & Samuel, IDW 2006, Exciton self-trapping in MEH-PPV films studied by ultrafast emission depolarization. in HB Brom (ed.), Physica Status Solidi C - Current Topics in Solid State Physics, Vol 3, No 2. Wiley-VCH, Weinheim, WEINHEIM, pp. 263-266, 11th International Conference on Transport in Interacting and Disordered Systems, Egmond aan Zee, 21/08/05. https://doi.org/10.1002/pssc.200562715

TY - GEN

T1 - Exciton self-trapping in MEH-PPV films studied by ultrafast emission depolarization

AU - Ruseckas, A

AU - Samuel, I D W

PY - 2006

Y1 - 2006

N2 - Depolarization of the transient absorption with a time constant of < 120 fs is observed in poly[2-(2'ethylhexyloxy)-5-methoxy-1,4-phenylenevinylene] (MEH-PPV) film. It is too fast to be explained by incoherent hopping. We attribute it to dynamic localization (self-trapping) of the initially delocalized excitons driven by structural relaxation of excited segments. Implications for charge carrier photogeneration are briefly disscussed. (c) 2006 WILEYNCH Veriag GmbH & Co. KGaA, Weinheim.

AB - Depolarization of the transient absorption with a time constant of < 120 fs is observed in poly[2-(2'ethylhexyloxy)-5-methoxy-1,4-phenylenevinylene] (MEH-PPV) film. It is too fast to be explained by incoherent hopping. We attribute it to dynamic localization (self-trapping) of the initially delocalized excitons driven by structural relaxation of excited segments. Implications for charge carrier photogeneration are briefly disscussed. (c) 2006 WILEYNCH Veriag GmbH & Co. KGaA, Weinheim.

U2 - 10.1002/pssc.200562715

DO - 10.1002/pssc.200562715

M3 - Conference contribution

SP - 263

EP - 266

BT - Physica Status Solidi C - Current Topics in Solid State Physics, Vol 3, No 2

A2 - Brom, HB

PB - Wiley-VCH, Weinheim

CY - WEINHEIM

T2 - 11th International Conference on Transport in Interacting and Disordered Systems

Y2 - 21 August 2005 through 26 August 2005

ER -

Exciton self-trapping in MEH-PPV films studied by ultrafast emission depolarization

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