Loss mechanisms in organic solar cells based on perylene diimide acceptors studied by time-resolved photoluminescence

Handle URI:
http://hdl.handle.net/10754/618026
Title:
Loss mechanisms in organic solar cells based on perylene diimide acceptors studied by time-resolved photoluminescence
Authors:
Gerhard, Marina; Gehrig, Dominik; Howard, Ian A.; Arndt, Andreas P.; Bilal, Mühenad; Rahimi-Iman, Arash; Lemmer, Uli; Laquai, Frederic ( 0000-0002-5887-6158 ) ; Koch, Martin
Abstract:
In organic photovoltaics (OPV), perylene diimide (PDI) acceptor materials are promising candidates to replace the commonly used, but more expensive fullerene derivatives. The use of alternative acceptor materials however implies new design guidelines for OPV devices. It is therefore important to understand the underlying photophysical processes, which either lead to charge generation or geminate recombination. In this contribution, we investigate radiative losses in a series of OPV materials based on two polymers, P3HT and PTB7, respectively, which were blended with different PDI derivatives. Our time-resolved photoluminescence measurements (TRPL) allow us to identify different loss mechanisms by the decay characteristics of several excitonic species. In particular, we find evidence for unfavorable morphologies in terms of large-scale pure domains, inhibited exciton transport and incomplete charge transfer. Furthermore, in one of the P3HT-blends, an interfacial emissive charge transfer (CT) state with strong trapping character is identified. © (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
KAUST Department:
Solar and Photovoltaic Engineering Research Center (SPERC)
Citation:
Marina Gerhard ; Dominik Gehrig ; Ian A. Howard ; Andreas P. Arndt ; Mühenad Bilal ; Arash Rahimi-Iman ; Uli Lemmer ; Frédéric Laquai and Martin Koch " Loss mechanisms in organic solar cells based on perylene diimide acceptors studied by time-resolved photoluminescence ", Proc. SPIE 9895, Organic Photonics VII, 98950H (April 27, 2016); doi:10.1117/12.2227672; http://dx.doi.org/10.1117/12.2227672
Journal:
Organic Photonics VII
Conference/Event name:
Organic Photonics VII
Issue Date:
27-Apr-2016
DOI:
10.1117/12.2227672
Type:
Conference Paper
Sponsors:
Financial support of this contribution from the German Academic Exchange Service (DAAD) is gratefully acknowledged.
Additional Links:
http://proceedings.spiedigitallibrary.org/proceeding.aspx?doi=10.1117/12.2227672
Appears in Collections:
Conference Papers

Full metadata record

DC FieldValue Language
dc.contributor.authorGerhard, Marinaen
dc.contributor.authorGehrig, Dominiken
dc.contributor.authorHoward, Ian A.en
dc.contributor.authorArndt, Andreas P.en
dc.contributor.authorBilal, Mühenaden
dc.contributor.authorRahimi-Iman, Arashen
dc.contributor.authorLemmer, Ulien
dc.contributor.authorLaquai, Fredericen
dc.contributor.authorKoch, Martinen
dc.date.accessioned2016-08-08T11:03:50Z-
dc.date.available2016-08-08T11:03:50Z-
dc.date.issued2016-04-27-
dc.identifier.citationMarina Gerhard ; Dominik Gehrig ; Ian A. Howard ; Andreas P. Arndt ; Mühenad Bilal ; Arash Rahimi-Iman ; Uli Lemmer ; Frédéric Laquai and Martin Koch " Loss mechanisms in organic solar cells based on perylene diimide acceptors studied by time-resolved photoluminescence ", Proc. SPIE 9895, Organic Photonics VII, 98950H (April 27, 2016); doi:10.1117/12.2227672; http://dx.doi.org/10.1117/12.2227672en
dc.identifier.doi10.1117/12.2227672-
dc.identifier.urihttp://hdl.handle.net/10754/618026-
dc.description.abstractIn organic photovoltaics (OPV), perylene diimide (PDI) acceptor materials are promising candidates to replace the commonly used, but more expensive fullerene derivatives. The use of alternative acceptor materials however implies new design guidelines for OPV devices. It is therefore important to understand the underlying photophysical processes, which either lead to charge generation or geminate recombination. In this contribution, we investigate radiative losses in a series of OPV materials based on two polymers, P3HT and PTB7, respectively, which were blended with different PDI derivatives. Our time-resolved photoluminescence measurements (TRPL) allow us to identify different loss mechanisms by the decay characteristics of several excitonic species. In particular, we find evidence for unfavorable morphologies in terms of large-scale pure domains, inhibited exciton transport and incomplete charge transfer. Furthermore, in one of the P3HT-blends, an interfacial emissive charge transfer (CT) state with strong trapping character is identified. © (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.en
dc.description.sponsorshipFinancial support of this contribution from the German Academic Exchange Service (DAAD) is gratefully acknowledged.en
dc.relation.urlhttp://proceedings.spiedigitallibrary.org/proceeding.aspx?doi=10.1117/12.2227672en
dc.rightsCopyright 2016 Society of Photo Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.en
dc.titleLoss mechanisms in organic solar cells based on perylene diimide acceptors studied by time-resolved photoluminescenceen
dc.typeConference Paperen
dc.contributor.departmentSolar and Photovoltaic Engineering Research Center (SPERC)en
dc.identifier.journalOrganic Photonics VIIen
dc.conference.dateApril 03, 2016en
dc.conference.nameOrganic Photonics VIIen
dc.conference.locationBrussels, Belgiumen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionFaculty of Physics and Material Sciences Center, Philipps-Universität Marburg, Renthof 5, D-35032 Marburg, Germanyen
dc.contributor.institutionMax Planck Research Group for Organic Optoelectronics, Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germanyen
dc.contributor.institutionInstitute of Microstructure Technology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germanyen
dc.contributor.institutionLight Technology Institute, Karlsruhe Institute of Technology, Kaiserstrasse 12, D-76131 Karlsruhe, Germanyen
kaust.authorLaquai, Fredericen
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