Characterizing the Polymer:Fullerene Intermolecular Interactions

Handle URI:
http://hdl.handle.net/10754/621605
Title:
Characterizing the Polymer:Fullerene Intermolecular Interactions
Authors:
Sweetnam, Sean; Vandewal, Koen; Cho, Eunkyung; Risko, Chad; Coropceanu, Veaceslav; Salleo, Alberto; Bredas, Jean-Luc ( 0000-0001-7278-4471 ) ; McGehee, Michael D.
Abstract:
Polymer:fullerene solar cells depend heavily on the electronic coupling of the polymer and fullerene molecular species from which they are composed. The intermolecular interaction between the polymer and fullerene tends to be strong in efficient photovoltaic systems, as evidenced by efficient charge transfer processes and by large changes in the energetics of the polymer and fullerene when they are molecularly mixed. Despite the clear presence of these strong intermolecular interactions between the polymer and fullerene, there is not a consensus on the nature of these interactions. In this work, we use a combination of Raman spectroscopy, charge transfer state absorption, and density functional theory calculations to show that the intermolecular interactions do not appear to be caused by ground state charge transfer between the polymer and fullerene. We conclude that these intermolecular interactions are primarily van der Waals in nature. © 2016 American Chemical Society.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Solar and Photovoltaic Engineering Research Center (SPERC)
Citation:
Sweetnam S, Vandewal K, Cho E, Risko C, Coropceanu V, et al. (2016) Characterizing the Polymer:Fullerene Intermolecular Interactions. Chem Mater 28: 1446–1452. Available: http://dx.doi.org/10.1021/acs.chemmater.5b03378.
Publisher:
American Chemical Society (ACS)
Journal:
Chemistry of Materials
Issue Date:
2-Feb-2016
DOI:
10.1021/acs.chemmater.5b03378
Type:
Article
ISSN:
0897-4756; 1520-5002
Sponsors:
This work was supported by the Department of the Navy, Office of Naval Research Award N00014-14-1-0580, and by ONR Global, Grant N62909-15-1-2003. S.S. acknowledges support from the National Science Foundation through the National Science Foundation Graduate Research Fellowship under Grant DGE-114747, and support from Stanford University through a Benchmark Stanford Graduate Fellowship.
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Solar and Photovoltaic Engineering Research Center (SPERC)

Full metadata record

DC FieldValue Language
dc.contributor.authorSweetnam, Seanen
dc.contributor.authorVandewal, Koenen
dc.contributor.authorCho, Eunkyungen
dc.contributor.authorRisko, Chaden
dc.contributor.authorCoropceanu, Veaceslaven
dc.contributor.authorSalleo, Albertoen
dc.contributor.authorBredas, Jean-Lucen
dc.contributor.authorMcGehee, Michael D.en
dc.date.accessioned2016-11-03T08:33:09Z-
dc.date.available2016-11-03T08:33:09Z-
dc.date.issued2016-02-02en
dc.identifier.citationSweetnam S, Vandewal K, Cho E, Risko C, Coropceanu V, et al. (2016) Characterizing the Polymer:Fullerene Intermolecular Interactions. Chem Mater 28: 1446–1452. Available: http://dx.doi.org/10.1021/acs.chemmater.5b03378.en
dc.identifier.issn0897-4756en
dc.identifier.issn1520-5002en
dc.identifier.doi10.1021/acs.chemmater.5b03378en
dc.identifier.urihttp://hdl.handle.net/10754/621605-
dc.description.abstractPolymer:fullerene solar cells depend heavily on the electronic coupling of the polymer and fullerene molecular species from which they are composed. The intermolecular interaction between the polymer and fullerene tends to be strong in efficient photovoltaic systems, as evidenced by efficient charge transfer processes and by large changes in the energetics of the polymer and fullerene when they are molecularly mixed. Despite the clear presence of these strong intermolecular interactions between the polymer and fullerene, there is not a consensus on the nature of these interactions. In this work, we use a combination of Raman spectroscopy, charge transfer state absorption, and density functional theory calculations to show that the intermolecular interactions do not appear to be caused by ground state charge transfer between the polymer and fullerene. We conclude that these intermolecular interactions are primarily van der Waals in nature. © 2016 American Chemical Society.en
dc.description.sponsorshipThis work was supported by the Department of the Navy, Office of Naval Research Award N00014-14-1-0580, and by ONR Global, Grant N62909-15-1-2003. S.S. acknowledges support from the National Science Foundation through the National Science Foundation Graduate Research Fellowship under Grant DGE-114747, and support from Stanford University through a Benchmark Stanford Graduate Fellowship.en
dc.publisherAmerican Chemical Society (ACS)en
dc.titleCharacterizing the Polymer:Fullerene Intermolecular Interactionsen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentSolar and Photovoltaic Engineering Research Center (SPERC)en
dc.identifier.journalChemistry of Materialsen
dc.contributor.institutionDepartment of Materials Science and Engineering, Stanford University, Stanford, CA, United Statesen
dc.contributor.institutionInstitut für Angewandte Photophysik, Technische Universität Dresden, George-Bähr-Straße 1, Dresden, Germanyen
dc.contributor.institutionSchool of Chemistry and Biochemistry, Center for Organic Photonics and Electronics, Georgia Institute of Technology, 901 Atlantic Drive NW, Atlanta, GA, United Statesen
dc.contributor.institutionMaterials and Devices Advanced Research Institute, LG Electronics, 38 Baumoe-ro, Seocho-gu, Seoul, South Koreaen
dc.contributor.institutionDepartment of Chemistry, Center for Applied Energy Research, University of Kentucky, Lexington, KY, United Statesen
kaust.authorBredas, Jean-Lucen
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