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Article: Conjugated Polymer–Assisted Grain Boundary Passivation for Efficient Inverted Planar Perovskite Solar Cells

TitleConjugated Polymer–Assisted Grain Boundary Passivation for Efficient Inverted Planar Perovskite Solar Cells
Authors
KeywordsConjugated polymers
Grain boundary passivation
Halide perovskites
Nickel oxide
Issue Date2019
PublisherWiley - VCH Verlag GmbH & Co KGaA. The Journal's web site is located at http://www.wiley-vch.de/home/afm
Citation
Advanced Functional Materials, 2019, v. 29 n. 27, article no. 1808855, p. 1-10 How to Cite?
AbstractGrain boundaries in lead halide perovskite films lead to increased recombination losses and decreased device stability under illumination due to defect‐mediated ion migration. The effect of a conjugated polymer additive, poly(bithiophene imide) (PBTI), is investigated in the antisolvent treatment step in the perovskite film deposition by comprehensive characterization of perovskite film properties and the performance of inverted planar perovskite solar cells (PSCs). PBTI is found to be incorporated within grain boundaries, which results in an improvement in perovskite film crystallinity and reduced defects. The successful defect passivation by PBTI yields reduces recombination losses and consequently increases power conversion efficiency (PCE). In addition, it gives rise to improved photoluminescence stability and improved PSC stability under illumination which can be attributed to reduced ion migration. The optimal devices exhibit a PCE of 20.67% compared to 18.89% of control devices without PBTI, while they retain over 70% of the initial efficiency after 600 h under 1 sun illumination compared to 56% for the control devices.
Persistent Identifierhttp://hdl.handle.net/10722/276340
ISSN
2017 Impact Factor: 13.325
2015 SCImago Journal Rankings: 5.210
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorChen, W-
dc.contributor.authorWang, Y-
dc.contributor.authorPang, G-
dc.contributor.authorKoh, CW-
dc.contributor.authorDjurisic, AB-
dc.contributor.authorWu, Y-
dc.contributor.authorTu, B-
dc.contributor.authorLiu, F-
dc.contributor.authorChen, R-
dc.contributor.authorWoo, HY-
dc.contributor.authorGuo, X-
dc.contributor.authorHe, Z-
dc.date.accessioned2019-09-10T03:01:08Z-
dc.date.available2019-09-10T03:01:08Z-
dc.date.issued2019-
dc.identifier.citationAdvanced Functional Materials, 2019, v. 29 n. 27, article no. 1808855, p. 1-10-
dc.identifier.issn1616-301X-
dc.identifier.urihttp://hdl.handle.net/10722/276340-
dc.description.abstractGrain boundaries in lead halide perovskite films lead to increased recombination losses and decreased device stability under illumination due to defect‐mediated ion migration. The effect of a conjugated polymer additive, poly(bithiophene imide) (PBTI), is investigated in the antisolvent treatment step in the perovskite film deposition by comprehensive characterization of perovskite film properties and the performance of inverted planar perovskite solar cells (PSCs). PBTI is found to be incorporated within grain boundaries, which results in an improvement in perovskite film crystallinity and reduced defects. The successful defect passivation by PBTI yields reduces recombination losses and consequently increases power conversion efficiency (PCE). In addition, it gives rise to improved photoluminescence stability and improved PSC stability under illumination which can be attributed to reduced ion migration. The optimal devices exhibit a PCE of 20.67% compared to 18.89% of control devices without PBTI, while they retain over 70% of the initial efficiency after 600 h under 1 sun illumination compared to 56% for the control devices.-
dc.languageeng-
dc.publisherWiley - VCH Verlag GmbH & Co KGaA. The Journal's web site is located at http://www.wiley-vch.de/home/afm-
dc.relation.ispartofAdvanced Functional Materials-
dc.subjectConjugated polymers-
dc.subjectGrain boundary passivation-
dc.subjectHalide perovskites-
dc.subjectNickel oxide-
dc.titleConjugated Polymer–Assisted Grain Boundary Passivation for Efficient Inverted Planar Perovskite Solar Cells-
dc.typeArticle-
dc.identifier.emailDjurisic, AB: dalek@hku.hk-
dc.identifier.emailLiu, F: liufz@hku.hk-
dc.identifier.authorityDjurisic, AB=rp00690-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1002/adfm.201808855-
dc.identifier.scopuseid_2-s2.0-85065223538-
dc.identifier.hkuros302403-
dc.identifier.volume29-
dc.identifier.issue27-
dc.identifier.spagearticle no. 1808855, p. 1-
dc.identifier.epagearticle no. 1808855, p. 10-
dc.identifier.isiWOS:000478619900027-
dc.publisher.placeGermany-

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