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Article: Improving Efficiency and Stability of Perovskite Solar Cells Enabled by A Near-Infrared-Absorbing Moisture Barrier

TitleImproving Efficiency and Stability of Perovskite Solar Cells Enabled by A Near-Infrared-Absorbing Moisture Barrier
Authors
KeywordsNIR absorption
moisture barrier
molecular bonding
perovskite solar cells
charge carrier dynamics
Issue Date2020
PublisherCell Press. The Journal's web site is located at https://www.journals.elsevier.com/joule
Citation
Joule, 2020, v. 4 n. 7, p. 1575-1593 How to Cite?
AbstractSummary: Simultaneously improving device efficiency and stability is the most important issue in perovskite solar cell (PSC) research. Here, we strategically introduce a multi-functional interface layer (MFIL) with integrated roles of: (1) electron transport, (2) moisture barrier, (3) near-infrared photocurrent enhancement, (4) trap passivation, and (5) ion migration suppression to enhance the device performance. The narrow-band-gap non-fullerene acceptor, Y6, was screened out to replace the most commonly used PCBM in the inverted PSCs. A significantly improved power conversion efficiency of 21.0% was achieved, along with a remarkable stability (up to 1,700 h) without encapsulation under various external stimuli (light, heat, and moisture). Furthermore, systematic studies of the molecular orientation or passivation and the charge carrier dynamics at the interface between perovskite and MFIL were presented. These results offer deep insights for designing advanced interlayers and establish the correlations between molecular orientation, interface molecular bonding, trap state density, non-radiation recombination, and the device performance.
Persistent Identifierhttp://hdl.handle.net/10722/286754
ISSN
2019 Impact Factor: 27.054

 

DC FieldValueLanguage
dc.contributor.authorHu, Q-
dc.contributor.authorChen, W-
dc.contributor.authorYang, W-
dc.contributor.authorLi, Y-
dc.contributor.authorZhou, Y-
dc.contributor.authorLarson, BW-
dc.contributor.authorJohnson, JC-
dc.contributor.authorLu, YH-
dc.contributor.authorZhong, W-
dc.contributor.authorXu, J-
dc.contributor.authorKlivansky, L-
dc.contributor.authorWang, C-
dc.contributor.authorSalmeron, M-
dc.contributor.authorDjurisic, AB-
dc.contributor.authorLiu, F-
dc.contributor.authorHe, Z-
dc.contributor.authorZhu, R-
dc.contributor.authorRussell, TP-
dc.date.accessioned2020-09-04T13:29:50Z-
dc.date.available2020-09-04T13:29:50Z-
dc.date.issued2020-
dc.identifier.citationJoule, 2020, v. 4 n. 7, p. 1575-1593-
dc.identifier.issn2542-4351-
dc.identifier.urihttp://hdl.handle.net/10722/286754-
dc.description.abstractSummary: Simultaneously improving device efficiency and stability is the most important issue in perovskite solar cell (PSC) research. Here, we strategically introduce a multi-functional interface layer (MFIL) with integrated roles of: (1) electron transport, (2) moisture barrier, (3) near-infrared photocurrent enhancement, (4) trap passivation, and (5) ion migration suppression to enhance the device performance. The narrow-band-gap non-fullerene acceptor, Y6, was screened out to replace the most commonly used PCBM in the inverted PSCs. A significantly improved power conversion efficiency of 21.0% was achieved, along with a remarkable stability (up to 1,700 h) without encapsulation under various external stimuli (light, heat, and moisture). Furthermore, systematic studies of the molecular orientation or passivation and the charge carrier dynamics at the interface between perovskite and MFIL were presented. These results offer deep insights for designing advanced interlayers and establish the correlations between molecular orientation, interface molecular bonding, trap state density, non-radiation recombination, and the device performance.-
dc.languageeng-
dc.publisherCell Press. The Journal's web site is located at https://www.journals.elsevier.com/joule-
dc.relation.ispartofJoule-
dc.subjectNIR absorption-
dc.subjectmoisture barrier-
dc.subjectmolecular bonding-
dc.subjectperovskite solar cells-
dc.subjectcharge carrier dynamics-
dc.titleImproving Efficiency and Stability of Perovskite Solar Cells Enabled by A Near-Infrared-Absorbing Moisture Barrier-
dc.typeArticle-
dc.identifier.emailChen, W: chenw20@hku.hk-
dc.identifier.emailDjurisic, AB: dalek@hku.hk-
dc.identifier.authorityDjurisic, AB=rp00690-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.joule.2020.06.007-
dc.identifier.scopuseid_2-s2.0-85087587617-
dc.identifier.hkuros313917-
dc.identifier.volume4-
dc.identifier.issue7-
dc.identifier.spage1575-
dc.identifier.epage1593-
dc.publisher.placeUnited States-

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