Delayed luminescence spectroscopy of organic photovoltaic binary blend films: Probing the emissive non-geminate charge recombination

Panagiotis E. Keivanidis; Valentin Kamm; Clare Dyer-Smith; Weimin Zhang; Frédéric Laquai; Iain McCulloch; Donal D.C. Bradley; Jenny Nelson

doi:10.1002/adma.201002389

Delayed luminescence spectroscopy of organic photovoltaic binary blend films: Probing the emissive non-geminate charge recombination

Panagiotis E. Keivanidis, Valentin Kamm, Clare Dyer-Smith, Weimin Zhang, Frédéric Laquai, Iain McCulloch, Donal D.C. Bradley, Jenny Nelson

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

28 Scopus citations

Abstract

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).

Original language	English (US)
Pages (from-to)	5183-5187
Number of pages	5
Journal	Advanced Materials
Volume	22
Issue number	45
DOIs	https://doi.org/10.1002/adma.201002389
State	Published - Dec 1 2010
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Materials Science
Mechanics of Materials
Mechanical Engineering

Keywords

bulk heterojunction
charge transfer
delayed luminescence
microstructure
non-geminate charge recombination
solar cells

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10.1002/adma.201002389

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abstract = "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).",

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T2 - Probing the emissive non-geminate charge recombination

AU - Keivanidis, Panagiotis E.

AU - Kamm, Valentin

AU - Dyer-Smith, Clare

AU - Zhang, Weimin

AU - Laquai, Frédéric

AU - McCulloch, Iain

AU - Bradley, Donal D.C.

AU - Nelson, Jenny

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N2 - 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).

AB - 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).

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KW - charge transfer

KW - delayed luminescence

KW - microstructure

KW - non-geminate charge recombination

KW - solar cells

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Delayed luminescence spectroscopy of organic photovoltaic binary blend films: Probing the emissive non-geminate charge recombination

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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