Molecular Intercalation and Cohesion of Organic Bulk Heterojunction Photovoltaic Devices

Handle URI:
http://hdl.handle.net/10754/598879
Title:
Molecular Intercalation and Cohesion of Organic Bulk Heterojunction Photovoltaic Devices
Authors:
Bruner, Christopher; Miller, Nichole C.; McGehee, Michael D.; Dauskardt, Reinhold H.
Abstract:
The phase separated bulk heterojunction (BHJ) layer in BHJ polymer:fullerene organic photovoltaic devices (OPV) are mechanically weak with low values of cohesion. Improved cohesion is important for OPV device thermomechanical reliability. BHJ devices are investigated and how fullerene intercalation within the active layer affects cohesive properties in the BHJ is shown. The intercalation of fullerenes between the side chains of the polymers poly(3,3″′-didocecyl quaterthiophene) (PQT-12) and poly(2,5-bis(3-hexadecylthiophen-2-yl)thieno[3,2-b]thiophene (pBTTT) is shown to enhance BHJ layer cohesion. Cohesion values range from ≈1 to 5 J m -2, depending on the polymer:fullerene blend, processing conditions, and composition. Devices with non-intercalated BHJ layers are found to have significantly reduced values of cohesion. The resulting device power conversion efficiencies (PCE) are also investigated and correlated with the device cohesion. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Citation:
Bruner C, Miller NC, McGehee MD, Dauskardt RH (2013) Molecular Intercalation and Cohesion of Organic Bulk Heterojunction Photovoltaic Devices. Advanced Functional Materials 23: 2863–2871. Available: http://dx.doi.org/10.1002/adfm.201202969.
Publisher:
Wiley-Blackwell
Journal:
Advanced Functional Materials
KAUST Grant Number:
KUS-C1-015-21
Issue Date:
17-Jan-2013
DOI:
10.1002/adfm.201202969
Type:
Article
ISSN:
1616-301X
Sponsors:
This work was partly supported by the Director, Office of Energy Research, Office of Basic Energy Sciences, Materials Sciences Division of the U.S. Department of Energy, under contract no. DE-FG02-10ER46391 and by the Center for Advanced Molecular Photovoltaics (CAMP) supported by King Abdullah University of Science and Technology (KAUST) under award no. KUS-C1-015-21. Portions of this research were carried out at the Stanford Synchrotron Radiation Lightsource, a national user facility operated by Stanford University on behalf of the US Department of Energy, Office of Basic Energy Sciences.
Appears in Collections:
Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorBruner, Christopheren
dc.contributor.authorMiller, Nichole C.en
dc.contributor.authorMcGehee, Michael D.en
dc.contributor.authorDauskardt, Reinhold H.en
dc.date.accessioned2016-02-25T13:42:57Zen
dc.date.available2016-02-25T13:42:57Zen
dc.date.issued2013-01-17en
dc.identifier.citationBruner C, Miller NC, McGehee MD, Dauskardt RH (2013) Molecular Intercalation and Cohesion of Organic Bulk Heterojunction Photovoltaic Devices. Advanced Functional Materials 23: 2863–2871. Available: http://dx.doi.org/10.1002/adfm.201202969.en
dc.identifier.issn1616-301Xen
dc.identifier.doi10.1002/adfm.201202969en
dc.identifier.urihttp://hdl.handle.net/10754/598879en
dc.description.abstractThe phase separated bulk heterojunction (BHJ) layer in BHJ polymer:fullerene organic photovoltaic devices (OPV) are mechanically weak with low values of cohesion. Improved cohesion is important for OPV device thermomechanical reliability. BHJ devices are investigated and how fullerene intercalation within the active layer affects cohesive properties in the BHJ is shown. The intercalation of fullerenes between the side chains of the polymers poly(3,3″′-didocecyl quaterthiophene) (PQT-12) and poly(2,5-bis(3-hexadecylthiophen-2-yl)thieno[3,2-b]thiophene (pBTTT) is shown to enhance BHJ layer cohesion. Cohesion values range from ≈1 to 5 J m -2, depending on the polymer:fullerene blend, processing conditions, and composition. Devices with non-intercalated BHJ layers are found to have significantly reduced values of cohesion. The resulting device power conversion efficiencies (PCE) are also investigated and correlated with the device cohesion. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.en
dc.description.sponsorshipThis work was partly supported by the Director, Office of Energy Research, Office of Basic Energy Sciences, Materials Sciences Division of the U.S. Department of Energy, under contract no. DE-FG02-10ER46391 and by the Center for Advanced Molecular Photovoltaics (CAMP) supported by King Abdullah University of Science and Technology (KAUST) under award no. KUS-C1-015-21. Portions of this research were carried out at the Stanford Synchrotron Radiation Lightsource, a national user facility operated by Stanford University on behalf of the US Department of Energy, Office of Basic Energy Sciences.en
dc.publisherWiley-Blackwellen
dc.subjectfractureen
dc.subjectfullerenesen
dc.subjectphotovoltaic devicesen
dc.subjectsolar cellsen
dc.subjectthin filmsen
dc.titleMolecular Intercalation and Cohesion of Organic Bulk Heterojunction Photovoltaic Devicesen
dc.typeArticleen
dc.identifier.journalAdvanced Functional Materialsen
dc.contributor.institutionDurand Building, Stanford, CA 94305-2205, United Statesen
kaust.grant.numberKUS-C1-015-21en
kaust.grant.fundedcenterCenter for Advanced Molecular Photovoltaics (CAMP)en
All Items in KAUST are protected by copyright, with all rights reserved, unless otherwise indicated.