π-Bridge-Independent 2-(Benzo[c][1,2,5]thiadiazol-4-ylmethylene)malononitrile-Substituted Nonfullerene Acceptors for Efficient Solar Cells

Handle URI:
http://hdl.handle.net/10754/600521
Title:
π-Bridge-Independent 2-(Benzo[c][1,2,5]thiadiazol-4-ylmethylene)malononitrile-Substituted Nonfullerene Acceptors for Efficient Solar Cells
Authors:
Wang, Kai; Firdaus, Yuliar; Babics, Maxime; Cruciani, Federico; Saleem, Qasim; El Labban, Abdulrahman ( 0000-0001-9891-0851 ) ; Alamoudi, Maha; Marszalek, Tomasz; Pisula, Wojciech; Laquai, Frederic ( 0000-0002-5887-6158 ) ; Beaujuge, Pierre
Abstract:
Molecular acceptors are promising alternatives to fullerenes (e.g. PC61/71BM) in the fabrication of high-efficiency bulk-heterojunction (BHJ) solar cells. While solution-processed polymer-fullerene BHJ devices have recently met the 10% efficiency threshold, molecular acceptors have yet to prove comparably efficient with polymer donors. At this point in time, it is important to forge a better understanding of the design parameters that directly impact small-molecule (SM) acceptor performance in BHJ solar cells. In this report, we show that 2-(benzo[c][1,2,5]thiadiazol-4-ylmethylene)malononitrile (BM)-terminated SM acceptors can achieve efficiencies as high as 5.3% in BHJ solar cells with the polymer donor PCE10. Through systematic device optimization and characterization studies, we find that the nonfull-erene analogues (FBM, CBM and CDTBM) all perform comparably well, independent of the molecular structure and electronics of the π-bridge that links the two electron-deficient BM end groups. With estimated electron affinities within range of those of common fullerenes (4.0-4.3 eV), and a wider range of ionization potentials (6.2-5.6 eV), the SM acceptors absorb in the visible spectrum and effectively contribute to the BHJ device photocurrent. BM-substituted SM acceptors are promising alterna-tives to fullerenes in solution-processed BHJ solar cells.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Solar and Photovoltaic Engineering Research Center (SPERC)
Citation:
π-Bridge-Independent 2-(Benzo[c][1,2,5]thiadiazol-4-ylmethylene)malononitrile-Substituted Nonfullerene Acceptors for Efficient Solar Cells 2016 Chemistry of Materials
Publisher:
American Chemical Society (ACS)
Journal:
Chemistry of Materials
Issue Date:
25-Feb-2016
DOI:
10.1021/acs.chemmater.6b00131
Type:
Article
ISSN:
0897-4756; 1520-5002
Sponsors:
This publication is based upon work supported by the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under Award No.CRG_R2_13_BEAU_KAUST_1. The authors acknowledge concurrent support under Baseline Research Funding from KAUST. The authors thank KAUST ACL for technical support in the mass spectrometry analyses. W.P. and T.M. gratefully acknowledge the staff of beamline 9 at the DELTA electron storage ring in Dortmund for providing beamtime and technical support for the GIWAXS measurements. W.P. and T.M. thank Marcelina Rojek for technical support in the GIWAXS measurements.
Additional Links:
http://pubs.acs.org/doi/abs/10.1021/acs.chemmater.6b00131
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; KAUST Solar Center (KSC)

Full metadata record

DC FieldValue Language
dc.contributor.authorWang, Kaien
dc.contributor.authorFirdaus, Yuliaren
dc.contributor.authorBabics, Maximeen
dc.contributor.authorCruciani, Federicoen
dc.contributor.authorSaleem, Qasimen
dc.contributor.authorEl Labban, Abdulrahmanen
dc.contributor.authorAlamoudi, Mahaen
dc.contributor.authorMarszalek, Tomaszen
dc.contributor.authorPisula, Wojciechen
dc.contributor.authorLaquai, Fredericen
dc.contributor.authorBeaujuge, Pierreen
dc.date.accessioned2016-03-03T12:20:16Zen
dc.date.available2016-03-03T12:20:16Zen
dc.date.issued2016-02-25en
dc.identifier.citationπ-Bridge-Independent 2-(Benzo[c][1,2,5]thiadiazol-4-ylmethylene)malononitrile-Substituted Nonfullerene Acceptors for Efficient Solar Cells 2016 Chemistry of Materialsen
dc.identifier.issn0897-4756en
dc.identifier.issn1520-5002en
dc.identifier.doi10.1021/acs.chemmater.6b00131en
dc.identifier.urihttp://hdl.handle.net/10754/600521en
dc.description.abstractMolecular acceptors are promising alternatives to fullerenes (e.g. PC61/71BM) in the fabrication of high-efficiency bulk-heterojunction (BHJ) solar cells. While solution-processed polymer-fullerene BHJ devices have recently met the 10% efficiency threshold, molecular acceptors have yet to prove comparably efficient with polymer donors. At this point in time, it is important to forge a better understanding of the design parameters that directly impact small-molecule (SM) acceptor performance in BHJ solar cells. In this report, we show that 2-(benzo[c][1,2,5]thiadiazol-4-ylmethylene)malononitrile (BM)-terminated SM acceptors can achieve efficiencies as high as 5.3% in BHJ solar cells with the polymer donor PCE10. Through systematic device optimization and characterization studies, we find that the nonfull-erene analogues (FBM, CBM and CDTBM) all perform comparably well, independent of the molecular structure and electronics of the π-bridge that links the two electron-deficient BM end groups. With estimated electron affinities within range of those of common fullerenes (4.0-4.3 eV), and a wider range of ionization potentials (6.2-5.6 eV), the SM acceptors absorb in the visible spectrum and effectively contribute to the BHJ device photocurrent. BM-substituted SM acceptors are promising alterna-tives to fullerenes in solution-processed BHJ solar cells.en
dc.description.sponsorshipThis publication is based upon work supported by the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under Award No.CRG_R2_13_BEAU_KAUST_1. The authors acknowledge concurrent support under Baseline Research Funding from KAUST. The authors thank KAUST ACL for technical support in the mass spectrometry analyses. W.P. and T.M. gratefully acknowledge the staff of beamline 9 at the DELTA electron storage ring in Dortmund for providing beamtime and technical support for the GIWAXS measurements. W.P. and T.M. thank Marcelina Rojek for technical support in the GIWAXS measurements.en
dc.language.isoenen
dc.publisherAmerican Chemical Society (ACS)en
dc.relation.urlhttp://pubs.acs.org/doi/abs/10.1021/acs.chemmater.6b00131en
dc.rightsThis document is the Accepted Manuscript version of a Published Work that appeared in final form in Chemistry of Materials, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://pubs.acs.org/doi/abs/10.1021/acs.chemmater.6b00131.en
dc.titleπ-Bridge-Independent 2-(Benzo[c][1,2,5]thiadiazol-4-ylmethylene)malononitrile-Substituted Nonfullerene Acceptors for Efficient Solar Cellsen
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.eprint.versionPost-printen
dc.contributor.institutionMax Planck Institute for Polymer Research, Anckermannweg 10, D-­55128 Mainz, Germanyen
dc.contributor.institutionDepartment of Molecular Physics, Faculty of Chemistry, Lodz University of Technology, Zeromskiego 116, 90-­924 Lodz, Polanden
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorWang, Kaien
kaust.authorFirdaus, Yuliaren
kaust.authorBabics, Maximeen
kaust.authorCruciani, Federicoen
kaust.authorSaleem, Qasimen
kaust.authorEl Labban, Abdulrahmanen
kaust.authorAlamoudi, Mahaen
kaust.authorLaquai, Fredericen
kaust.authorBeaujuge, Pierreen
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