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Ultrafast photogene...
Ultrafast photogeneration of inter-chain charge pairs in polythiophene films
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- Ruseckas, A (författare)
- Univ Lund, Dept Phys Chem, S-22100 Lund, Sweden Inst Phys, LT-2600 Vilnius, Lithuania Linkoping Univ, IFM, Dept Phys, S-58183 Linkoping, Sweden Chalmers Univ Technol, Dept Polymer Technol, S-41296 Gothenburg, Sweden Univ Trieste, Dipartimento Sci Farmaceut, I-34127 Trieste, Italy
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- Theander, M (författare)
- Univ Lund, Dept Phys Chem, S-22100 Lund, Sweden Inst Phys, LT-2600 Vilnius, Lithuania Linkoping Univ, IFM, Dept Phys, S-58183 Linkoping, Sweden Chalmers Univ Technol, Dept Polymer Technol, S-41296 Gothenburg, Sweden Univ Trieste, Dipartimento Sci Farmaceut, I-34127 Trieste, Italy
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Andersson, MR (författare)
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visa fler...
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Svensson, M (författare)
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- Prato, M (författare)
- Univ Lund, Dept Phys Chem, S-22100 Lund, Sweden Inst Phys, LT-2600 Vilnius, Lithuania Linkoping Univ, IFM, Dept Phys, S-58183 Linkoping, Sweden Chalmers Univ Technol, Dept Polymer Technol, S-41296 Gothenburg, Sweden Univ Trieste, Dipartimento Sci Farmaceut, I-34127 Trieste, Italy
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- Inganäs, Olle (författare)
- Linköpings universitet,Tekniska högskolan,Biomolekylär och Organisk Elektronik
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- Sundstrom, V (författare)
- Univ Lund, Dept Phys Chem, S-22100 Lund, Sweden Inst Phys, LT-2600 Vilnius, Lithuania Linkoping Univ, IFM, Dept Phys, S-58183 Linkoping, Sweden Chalmers Univ Technol, Dept Polymer Technol, S-41296 Gothenburg, Sweden Univ Trieste, Dipartimento Sci Farmaceut, I-34127 Trieste, Italy
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visa färre...
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(creator_code:org_t)
- 2000
- 2000
- Engelska.
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Ingår i: Chemical Physics Letters. - 0009-2614 .- 1873-4448. ; 322:1-2, s. 136-142
- Relaterad länk:
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https://urn.kb.se/re...
Abstract
Ämnesord
Stäng
- Photoexcitation dynamics in films of polythiophenes with different side groups were studied by transient absorption spectroscopy using 80 fs pulses. We show that inter-chain charge pairs (CP) are generated with similar to 20% efficiency in a polymer with short inter-chain distance (similar to 4 Angstrom) within 100 fs after photoexcitation. We discuss two mechanisms for inter-chain charge separation: (i) electron or hole transfer from an initially excited intra-chain singlet state or (ii) optical excitation of mixed exciton-charge transfer states, which quickly evolve to inter-chain CPs. (C) 2000 Elsevier Science B.V, All rights reserved.
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