Singlet-triplet splitting of geminate electron-hole pairs in conjugated polymers

A. Kadashchuk; A. Vakhnin; I. Blonski; D. Beljonne; Z. Shuai; J. L. Brédas; V. I. Arkhipov; P. Heremans; E. V. Emelianova; H. Bässler

doi:10.1103/PhysRevLett.93.066803

Singlet-triplet splitting of geminate electron-hole pairs in conjugated polymers

A. Kadashchuk^*, A. Vakhnin, I. Blonski, D. Beljonne, Z. Shuai, J. L. Brédas, V. I. Arkhipov, P. Heremans, E. V. Emelianova, H. Bässler

^*Corresponding author for this work

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

56 Scopus citations

Abstract

The thermally stimulated luminescence technique was used for investigating the singlet-triplet splitting of geminate polaron pairs in a ladder-type conjugated polymer. The energy gap that separated the single and triplet states of geminate pairs depended on the polymer morphology and was measured to be in the range of 3-6 meV. THe singlet-triplet branching was strongly impacted by the sample morphology. The low splitting values obtained from quantum-chemical calculations were found to be important for the spin-dependent exciton formation in conjugated polymers.

Original language	English (US)
Article number	066803
Pages (from-to)	066803-1-066803-4
Journal	Physical Review Letters
Volume	93
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevLett.93.066803
State	Published - Aug 6 2004
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.93.066803

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title = "Singlet-triplet splitting of geminate electron-hole pairs in conjugated polymers",

abstract = "The thermally stimulated luminescence technique was used for investigating the singlet-triplet splitting of geminate polaron pairs in a ladder-type conjugated polymer. The energy gap that separated the single and triplet states of geminate pairs depended on the polymer morphology and was measured to be in the range of 3-6 meV. THe singlet-triplet branching was strongly impacted by the sample morphology. The low splitting values obtained from quantum-chemical calculations were found to be important for the spin-dependent exciton formation in conjugated polymers.",

author = "A. Kadashchuk and A. Vakhnin and I. Blonski and D. Beljonne and Z. Shuai and Br{\'e}das, {J. L.} and Arkhipov, {V. I.} and P. Heremans and Emelianova, {E. V.} and H. B{\"a}ssler",

year = "2004",

month = aug,

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doi = "10.1103/PhysRevLett.93.066803",

language = "English (US)",

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T1 - Singlet-triplet splitting of geminate electron-hole pairs in conjugated polymers

AU - Kadashchuk, A.

AU - Vakhnin, A.

AU - Blonski, I.

AU - Beljonne, D.

AU - Shuai, Z.

AU - Brédas, J. L.

AU - Arkhipov, V. I.

AU - Heremans, P.

AU - Emelianova, E. V.

AU - Bässler, H.

PY - 2004/8/6

Y1 - 2004/8/6

N2 - The thermally stimulated luminescence technique was used for investigating the singlet-triplet splitting of geminate polaron pairs in a ladder-type conjugated polymer. The energy gap that separated the single and triplet states of geminate pairs depended on the polymer morphology and was measured to be in the range of 3-6 meV. THe singlet-triplet branching was strongly impacted by the sample morphology. The low splitting values obtained from quantum-chemical calculations were found to be important for the spin-dependent exciton formation in conjugated polymers.

AB - The thermally stimulated luminescence technique was used for investigating the singlet-triplet splitting of geminate polaron pairs in a ladder-type conjugated polymer. The energy gap that separated the single and triplet states of geminate pairs depended on the polymer morphology and was measured to be in the range of 3-6 meV. THe singlet-triplet branching was strongly impacted by the sample morphology. The low splitting values obtained from quantum-chemical calculations were found to be important for the spin-dependent exciton formation in conjugated polymers.

UR - http://www.scopus.com/inward/record.url?scp=69649108525&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.93.066803

DO - 10.1103/PhysRevLett.93.066803

M3 - Article

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AN - SCOPUS:69649108525

SN - 0031-9007

VL - 93

SP - 066803-1-066803-4

JO - Physical Review Letters

JF - Physical Review Letters

IS - 6

M1 - 066803

ER -

Singlet-triplet splitting of geminate electron-hole pairs in conjugated polymers

Abstract

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