The Role of Electron Affinity in Determining Whether Fullerenes Catalyze or Inhibit Photooxidation of Polymers for Solar Cells

Handle URI:
http://hdl.handle.net/10754/599957
Title:
The Role of Electron Affinity in Determining Whether Fullerenes Catalyze or Inhibit Photooxidation of Polymers for Solar Cells
Authors:
Hoke, Eric T.; Sachs-Quintana, I. T.; Lloyd, Matthew T.; Kauvar, Isaac; Mateker, William R.; Nardes, Alexandre M.; Peters, Craig H.; Kopidakis, Nikos; McGehee, Michael D.
Abstract:
Understanding the stability and degradation mechanisms of organic solar materials is critically important to achieving long device lifetimes. Here, an investigation of the photodegradation of polymer:fullerene blend fi lms exposed to ambient conditions for a variety of polymer and fullerene derivative combinations is presented. Despite the wide range in polymer stabilities to photodegradation, the rate of irreversible polymer photobleaching in blend fi lms is found to consistently and dramatically increase with decreasing electron affi nity of the fullerene derivative. Furthermore, blends containing fullerenes with the smallest electron affi nities photobleached at a faster rate than fi lms of the pure polymer. These observations can be explained by a mechanism where both the polymer and fullerene donate photogenerated electrons to diatomic oxygen to form the superoxide radical anion which degrades the polymer. © 2012 WILEY-VCH Verlag GmbH & Co.
Citation:
Hoke ET, Sachs-Quintana IT, Lloyd MT, Kauvar I, Mateker WR, et al. (2012) The Role of Electron Affinity in Determining Whether Fullerenes Catalyze or Inhibit Photooxidation of Polymers for Solar Cells. Adv Energy Mater 2: 1351–1357. Available: http://dx.doi.org/10.1002/aenm.201200169.
Publisher:
Wiley-Blackwell
Journal:
Advanced Energy Materials
KAUST Grant Number:
KUS-C1-015-21
Issue Date:
21-May-2012
DOI:
10.1002/aenm.201200169
Type:
Article
ISSN:
1614-6832
Sponsors:
E.T.H., I.T.S.Q., and M.T.L. contributed equally to this work. This publication was supported by the Center for Advanced Molecular Photovoltaics (Award No KUS-C1-015-21), made by King Abdullah University of Science and Technology (KAUST). M.T.L, A.M.N and N.K. acknowledge support from the US Department of Energy under Contract No. DE-AC36-08-GO28308 with the National Renewable Energy Laboratory through the DOE SETP program. We thank Plextronics for providing some of the fullerenes (ICMA, ICBA, and ICTA) and LG providing the sulfur plasma lamps. We thank H.-J. Egelhaaf for helpful discussions. Additional support was provided for E.T.H. by the Fannie and John Hertz Foundation, for I.T.S.Q. by the National Science Foundation Graduate Research Fellowship and I. K. was supported by the DOE SULI fellowship program.
Appears in Collections:
Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorHoke, Eric T.en
dc.contributor.authorSachs-Quintana, I. T.en
dc.contributor.authorLloyd, Matthew T.en
dc.contributor.authorKauvar, Isaacen
dc.contributor.authorMateker, William R.en
dc.contributor.authorNardes, Alexandre M.en
dc.contributor.authorPeters, Craig H.en
dc.contributor.authorKopidakis, Nikosen
dc.contributor.authorMcGehee, Michael D.en
dc.date.accessioned2016-02-28T06:33:14Zen
dc.date.available2016-02-28T06:33:14Zen
dc.date.issued2012-05-21en
dc.identifier.citationHoke ET, Sachs-Quintana IT, Lloyd MT, Kauvar I, Mateker WR, et al. (2012) The Role of Electron Affinity in Determining Whether Fullerenes Catalyze or Inhibit Photooxidation of Polymers for Solar Cells. Adv Energy Mater 2: 1351–1357. Available: http://dx.doi.org/10.1002/aenm.201200169.en
dc.identifier.issn1614-6832en
dc.identifier.doi10.1002/aenm.201200169en
dc.identifier.urihttp://hdl.handle.net/10754/599957en
dc.description.abstractUnderstanding the stability and degradation mechanisms of organic solar materials is critically important to achieving long device lifetimes. Here, an investigation of the photodegradation of polymer:fullerene blend fi lms exposed to ambient conditions for a variety of polymer and fullerene derivative combinations is presented. Despite the wide range in polymer stabilities to photodegradation, the rate of irreversible polymer photobleaching in blend fi lms is found to consistently and dramatically increase with decreasing electron affi nity of the fullerene derivative. Furthermore, blends containing fullerenes with the smallest electron affi nities photobleached at a faster rate than fi lms of the pure polymer. These observations can be explained by a mechanism where both the polymer and fullerene donate photogenerated electrons to diatomic oxygen to form the superoxide radical anion which degrades the polymer. © 2012 WILEY-VCH Verlag GmbH & Co.en
dc.description.sponsorshipE.T.H., I.T.S.Q., and M.T.L. contributed equally to this work. This publication was supported by the Center for Advanced Molecular Photovoltaics (Award No KUS-C1-015-21), made by King Abdullah University of Science and Technology (KAUST). M.T.L, A.M.N and N.K. acknowledge support from the US Department of Energy under Contract No. DE-AC36-08-GO28308 with the National Renewable Energy Laboratory through the DOE SETP program. We thank Plextronics for providing some of the fullerenes (ICMA, ICBA, and ICTA) and LG providing the sulfur plasma lamps. We thank H.-J. Egelhaaf for helpful discussions. Additional support was provided for E.T.H. by the Fannie and John Hertz Foundation, for I.T.S.Q. by the National Science Foundation Graduate Research Fellowship and I. K. was supported by the DOE SULI fellowship program.en
dc.publisherWiley-Blackwellen
dc.titleThe Role of Electron Affinity in Determining Whether Fullerenes Catalyze or Inhibit Photooxidation of Polymers for Solar Cellsen
dc.typeArticleen
dc.identifier.journalAdvanced Energy Materialsen
dc.contributor.institutionStanford University, Palo Alto, United Statesen
dc.contributor.institutionNational Renewable Energy Laboratory, Golden, United Statesen
kaust.grant.numberKUS-C1-015-21en
kaust.grant.fundedcenterCenter for Advanced Molecular Photovoltaics (CAMP)en
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