Adhesion properties of inverted polymer solarcells: Processing and film structure parameters

Handle URI:
http://hdl.handle.net/10754/597462
Title:
Adhesion properties of inverted polymer solarcells: Processing and film structure parameters
Authors:
Dupont, Stephanie R.; Voroshazi, Eszter; Heremans, Paul; Dauskardt, Reinhold H.
Abstract:
We report on the adhesion of weak interfaces in inverted P3HT:PCBM-based polymer solar cells (OPV) with either a conductive polymer, PEDOT:PSS, or a metal oxide, molybdenum trioxide (MoO3), as the hole transport layer. The PEDOT:PSS OPVs were prepared by spin or spray coating on glass substrates, or slot-die coating on flexible PET substrates. In all cases, we observed adhesive failure at the interface between the P3HT:PCBM with PEDOT:PSS layer. The adhesion energy measured for the solar cells made on glass substrates was about 1.8 J/m2, but only 0.5 J/m2 for the roll-to-roll processed flexible solar cells. The adhesion energy was insensitive to the PEDOT:PSS layer thickness in the range of 10-40 nm. A marginal increase in adhesion energy was measured with increased O2 plasma power. Compared to solution processed PEDOT:PSS, we found that thermally evaporated MoO 3 adheres less to the P3HT:PCBM layer, which we attributed to the reduced mixing at the MoO3/P3HT:PCBM interface during the thermal evaporation process. Insights into the mechanisms of delamination and the effect of different material properties and processing parameters yield general guidelines for the design of more reliable organic photovoltaic devices.© 2013 Elsevier B.V. All rights reserved.
Citation:
Dupont SR, Voroshazi E, Heremans P, Dauskardt RH (2013) Adhesion properties of inverted polymer solarcells: Processing and film structure parameters. Organic Electronics 14: 1262–1270. Available: http://dx.doi.org/10.1016/j.orgel.2013.02.022.
Publisher:
Elsevier BV
Journal:
Organic Electronics
KAUST Grant Number:
KUS-C1-015-21
Issue Date:
May-2013
DOI:
10.1016/j.orgel.2013.02.022
Type:
Article
ISSN:
1566-1199
Sponsors:
We acknowledge C. Girotto for his assistance with the spray coated sample preparation. This research was supported 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. S.R. Dupont acknowledges financial support as a fellow of the Belgian American Educational Foundation (B.A.E.F).
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Full metadata record

DC FieldValue Language
dc.contributor.authorDupont, Stephanie R.en
dc.contributor.authorVoroshazi, Eszteren
dc.contributor.authorHeremans, Paulen
dc.contributor.authorDauskardt, Reinhold H.en
dc.date.accessioned2016-02-25T12:40:12Zen
dc.date.available2016-02-25T12:40:12Zen
dc.date.issued2013-05en
dc.identifier.citationDupont SR, Voroshazi E, Heremans P, Dauskardt RH (2013) Adhesion properties of inverted polymer solarcells: Processing and film structure parameters. Organic Electronics 14: 1262–1270. Available: http://dx.doi.org/10.1016/j.orgel.2013.02.022.en
dc.identifier.issn1566-1199en
dc.identifier.doi10.1016/j.orgel.2013.02.022en
dc.identifier.urihttp://hdl.handle.net/10754/597462en
dc.description.abstractWe report on the adhesion of weak interfaces in inverted P3HT:PCBM-based polymer solar cells (OPV) with either a conductive polymer, PEDOT:PSS, or a metal oxide, molybdenum trioxide (MoO3), as the hole transport layer. The PEDOT:PSS OPVs were prepared by spin or spray coating on glass substrates, or slot-die coating on flexible PET substrates. In all cases, we observed adhesive failure at the interface between the P3HT:PCBM with PEDOT:PSS layer. The adhesion energy measured for the solar cells made on glass substrates was about 1.8 J/m2, but only 0.5 J/m2 for the roll-to-roll processed flexible solar cells. The adhesion energy was insensitive to the PEDOT:PSS layer thickness in the range of 10-40 nm. A marginal increase in adhesion energy was measured with increased O2 plasma power. Compared to solution processed PEDOT:PSS, we found that thermally evaporated MoO 3 adheres less to the P3HT:PCBM layer, which we attributed to the reduced mixing at the MoO3/P3HT:PCBM interface during the thermal evaporation process. Insights into the mechanisms of delamination and the effect of different material properties and processing parameters yield general guidelines for the design of more reliable organic photovoltaic devices.© 2013 Elsevier B.V. All rights reserved.en
dc.description.sponsorshipWe acknowledge C. Girotto for his assistance with the spray coated sample preparation. This research was supported 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. S.R. Dupont acknowledges financial support as a fellow of the Belgian American Educational Foundation (B.A.E.F).en
dc.publisherElsevier BVen
dc.subjectAdhesion and delamination in thin film structuresen
dc.subjectP3HT:PCBM inverted polymer solar cellsen
dc.subjectPEDOT:PSS and MoO3en
dc.subjectProcessing parametersen
dc.subjectReliabilityen
dc.titleAdhesion properties of inverted polymer solarcells: Processing and film structure parametersen
dc.typeArticleen
dc.identifier.journalOrganic Electronicsen
dc.contributor.institutionStanford University, Palo Alto, United Statesen
dc.contributor.institutionInteruniversity Micro-Electronics Center at Leuven, Leuven, Belgiumen
dc.contributor.institutionKU Leuven, 3000 Leuven, Belgiumen
kaust.grant.numberKUS-C1-015-21en
kaust.grant.fundedcenterCenter for Advanced Molecular Photovoltaics (CAMP)en
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