Show simple item record

dc.contributor.authorLiang, Ru-Ze
dc.contributor.authorBabics, Maxime
dc.contributor.authorSeitkhan, Akmaral
dc.contributor.authorWang, Kai
dc.contributor.authorGeraghty, Paul Bythell
dc.contributor.authorLopatin, Sergei
dc.contributor.authorCruciani, Federico
dc.contributor.authorFirdaus, Yuliar
dc.contributor.authorCaporuscio, Marco
dc.contributor.authorJones, David J.
dc.contributor.authorBeaujuge, Pierre
dc.date.accessioned2018-01-01T12:19:04Z
dc.date.available2018-01-01T12:19:04Z
dc.date.issued2017-12-15
dc.identifier.citationLiang R-Z, Babics M, Seitkhan A, Wang K, Geraghty PB, et al. (2017) Additive-Morphology Interplay and Loss Channels in “All-Small-Molecule” Bulk-heterojunction (BHJ) Solar Cells with the Nonfullerene Acceptor IDTTBM. Advanced Functional Materials: 1705464. Available: http://dx.doi.org/10.1002/adfm.201705464.
dc.identifier.issn1616-301X
dc.identifier.doi10.1002/adfm.201705464
dc.identifier.urihttp://hdl.handle.net/10754/626634
dc.description.abstractAchieving efficient bulk-heterojunction (BHJ) solar cells from blends of solution-processable small-molecule (SM) donors and acceptors is proved particularly challenging due to the complexity in obtaining a favorable donor–acceptor morphology. In this report, the BHJ device performance pattern of a set of analogous, well-defined SM donors—DR3TBDTT (DR3), SMPV1, and BTR—used in conjunction with the SM acceptor IDTTBM is examined. Examinations show that the nonfullerene “All-SM” BHJ solar cells made with DR3 and IDTTBM can achieve power conversion efficiencies (PCEs) of up to ≈4.5% (avg. 4.0%) when the solution-processing additive 1,8-diiodooctane (DIO, 0.8% v/v) is used in the blend solutions. The figures of merit of optimized DR3:IDTTBM solar cells contrast with those of “as-cast” BHJ devices from which only modest PCEs <1% can be achieved. Combining electron energy loss spectrum analyses in scanning transmission electron microscopy mode, carrier transport measurements via “metal-insulator-semiconductor carrier extraction” methods, and systematic recombination examinations by light-dependence and transient photocurrent analyses, it is shown that DIO plays a determining role—establishing a favorable lengthscale for the phase-separated SM donor–acceptor network and, in turn, improving the balance in hole/electron mobilities and the carrier collection efficiencies overall.
dc.description.sponsorshipR.-Z.L. and M.B. contributed equally to this work. 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 and under the KAUST Solar Center programs. The authors also acknowledge concurrent support under Baseline Research Funding from KAUST. The authors thank KAUST ACL for technical support in the mass spectrometry analyses. Dr. D. J. Jones acknowledges the Australian Renewable Energy Agency, which funds the project grants within the Australian Centre for Advanced Photovoltaics. Responsibility for the views, information or advice expressed herein is not accepted by the Australian Government.
dc.publisherWiley
dc.relation.urlhttp://onlinelibrary.wiley.com/doi/10.1002/adfm.201705464/full
dc.subjectBulk heterojunctions
dc.subjectNonfullerenes
dc.subjectOrganic photovoltaics
dc.subjectSmall molecules
dc.subjectSolar cells
dc.titleAdditive-Morphology Interplay and Loss Channels in “All-Small-Molecule” Bulk-heterojunction (BHJ) Solar Cells with the Nonfullerene Acceptor IDTTBM
dc.typeArticle
dc.contributor.departmentChemical Science Program
dc.contributor.departmentElectron Microscopy
dc.contributor.departmentImaging and Characterization Core Lab
dc.contributor.departmentKAUST Solar Center (KSC)
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalAdvanced Functional Materials
dc.contributor.institutionSchool of Chemistry; Bio21 Institute; The University of Melbourne; Parkville Victoria 3010 Australia
kaust.personLiang, Ru-Ze
kaust.personBabics, Maxime
kaust.personSeitkhan, Akmaral
kaust.personWang, Kai
kaust.personLopatin, Sergei
kaust.personCruciani, Federico
kaust.personFirdaus, Yuliar
kaust.personCaporuscio, Marco
kaust.personBeaujuge, Pierre
kaust.grant.numberCRG_R2_13_BEAU_KAUST_1
dc.date.published-online2017-12-15
dc.date.published-print2018-02


This item appears in the following Collection(s)

Show simple item record