Delayed Luminescence Spectroscopy of Organic Photovoltaic Binary Blend Films: Probing the Emissive Non-geminate Charge Recombination

Organic photovoltaics: Following the direct photoexcitation of the low‐energy optical gap PDI component in the F8BT:PDI photovoltaic blend film (step 1), charge generation takes place (steps 2, 3). Non‐geminate charge recombination (step 4) results in the generation of delayed luminescence (DL) in t...

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Bibliographic Details
Published inAdvanced materials (Weinheim) Vol. 22; no. 45; pp. 5183 - 5187
Main Authors Keivanidis, Panagiotis E., Kamm, Valentin, Dyer-Smith, Clare, Zhang, Weimin, Laquai, Frédéric, McCulloch, Iain, Bradley, Donal D. C., Nelson, Jenny
Format Journal Article
LanguageEnglish
Published Weinheim WILEY-VCH Verlag 01.12.2010
WILEY‐VCH Verlag
Subjects
Benzothiazoles - chemistry
bulk heterojunction
charge transfer
delayed luminescence
Fluorenes - chemistry
Luminescence
microstructure
non-geminate charge recombination
Perylene - analogs & derivatives
Photochemical Processes
solar cells
Spectrum Analysis
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Summary:Organic photovoltaics: Following the direct photoexcitation of the low‐energy optical gap PDI component in the F8BT:PDI photovoltaic blend film (step 1), charge generation takes place (steps 2, 3). Non‐geminate charge recombination (step 4) results in the generation of delayed luminescence (DL) in the μs time scale (step 5). The DL spectrum originates from an equilibrated charge‐transfer (CT) state formed between the components of the composite. The F8BT–PDI CT complex has a ground state character (step 6).
Bibliography:istex:BDF4C75B070482E0F1B7D7964D242100A1D2CDEC
ArticleID:ADMA201002389
ark:/67375/WNG-6ZH8K28K-2
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201002389