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Article: Establishing Multifunctional Interface Layer of Perovskite Ligand Modified Lead Sulfide Quantum Dots for Improving the Performance and Stability of Perovskite Solar Cells

TitleEstablishing Multifunctional Interface Layer of Perovskite Ligand Modified Lead Sulfide Quantum Dots for Improving the Performance and Stability of Perovskite Solar Cells
Authors
KeywordsPbS quantum dots (QDs)
interface layers
ion mobilization
ligand exchange
perovskite solar cells
Issue Date2020
PublisherWiley - VCH Verlag GmbH & Co KGaA. The Journal's web site is located at http://www3.interscience.wiley.com/cgi-bin/jabout/107640323/2421_info.html
Citation
Small, 2020, v. 16 n. 41, p. article no. 2002628 How to Cite?
AbstractWhile organic–inorganic halide perovskite solar cells (PSCs) show great potential for realizing low-cost and easily fabricated photovoltaics, the unexpected defects and long-term stability against moisture are the main issues hindering their practical applications. Herein, a strategy is demonstrated to address the main issues by introducing lead sulfide quantum dots (QDs) on the perovskite surface as the multifunctional interface layer on perovskite film through establishing perovskite as the ligand on PbS QDs. Meanwhile, the multifunctions are featured in three aspects including the strong interactions of PbS QDs with perovskites particularly at the grain boundaries favoring good QDs coverage on perovskites for ultimate smooth morphology; an inhibition of iodide ions mobilization by the strong interaction between iodide and the incorporated QDs; and the reduction of the dangling bonds of Pb2+ by the sulfur atoms of PbS QDs. Finally, the device performances are highly improved due to the reduced defects and non-radiative recombination. The results show that both open-circuit voltage and fill factor are significantly improved to the high values of 1.13 V and 80%, respectively in CH3NH3PbI3-based PSCs, offering a high efficiency of 20.64%. The QDs incorporation also enhances PSCs’ stability benefitting from the induced hydrophobic surface and suppressed iodide mobilization.
Persistent Identifierhttp://hdl.handle.net/10722/305346
ISSN
2023 Impact Factor: 13.0
2023 SCImago Journal Rankings: 3.348
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorMA, R-
dc.contributor.authorRen, Z-
dc.contributor.authorLI, C-
dc.contributor.authorWANG, Y-
dc.contributor.authorHUANG, Z-
dc.contributor.authorZHAO, Y-
dc.contributor.authorYANG, T-
dc.contributor.authorLIANG, Y-
dc.contributor.authorSUN, XW-
dc.contributor.authorChoy, WCH-
dc.date.accessioned2021-10-20T10:08:07Z-
dc.date.available2021-10-20T10:08:07Z-
dc.date.issued2020-
dc.identifier.citationSmall, 2020, v. 16 n. 41, p. article no. 2002628-
dc.identifier.issn1613-6810-
dc.identifier.urihttp://hdl.handle.net/10722/305346-
dc.description.abstractWhile organic–inorganic halide perovskite solar cells (PSCs) show great potential for realizing low-cost and easily fabricated photovoltaics, the unexpected defects and long-term stability against moisture are the main issues hindering their practical applications. Herein, a strategy is demonstrated to address the main issues by introducing lead sulfide quantum dots (QDs) on the perovskite surface as the multifunctional interface layer on perovskite film through establishing perovskite as the ligand on PbS QDs. Meanwhile, the multifunctions are featured in three aspects including the strong interactions of PbS QDs with perovskites particularly at the grain boundaries favoring good QDs coverage on perovskites for ultimate smooth morphology; an inhibition of iodide ions mobilization by the strong interaction between iodide and the incorporated QDs; and the reduction of the dangling bonds of Pb2+ by the sulfur atoms of PbS QDs. Finally, the device performances are highly improved due to the reduced defects and non-radiative recombination. The results show that both open-circuit voltage and fill factor are significantly improved to the high values of 1.13 V and 80%, respectively in CH3NH3PbI3-based PSCs, offering a high efficiency of 20.64%. The QDs incorporation also enhances PSCs’ stability benefitting from the induced hydrophobic surface and suppressed iodide mobilization.-
dc.languageeng-
dc.publisherWiley - VCH Verlag GmbH & Co KGaA. The Journal's web site is located at http://www3.interscience.wiley.com/cgi-bin/jabout/107640323/2421_info.html-
dc.relation.ispartofSmall-
dc.rightsSmall. Copyright © Wiley - VCH Verlag GmbH & Co KGaA.-
dc.rightsSubmitted (preprint) Version: This is the pre-peer reviewed version of the following article: [FULL CITE], which has been published in final form at [Link to final article using the DOI]. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions Accepted (peer-reviewed) Version: This is the peer reviewed version of the following article: [FULL CITE], which has been published in final form at [Link to final article using the DOI]. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.-
dc.subjectPbS quantum dots (QDs)-
dc.subjectinterface layers-
dc.subjection mobilization-
dc.subjectligand exchange-
dc.subjectperovskite solar cells-
dc.titleEstablishing Multifunctional Interface Layer of Perovskite Ligand Modified Lead Sulfide Quantum Dots for Improving the Performance and Stability of Perovskite Solar Cells-
dc.typeArticle-
dc.identifier.emailRen, Z: zhwren@hku.hk-
dc.identifier.emailChoy, WCH: chchoy@eee.hku.hk-
dc.identifier.authorityChoy, WCH=rp00218-
dc.identifier.doi10.1002/smll.202002628-
dc.identifier.pmid32964688-
dc.identifier.scopuseid_2-s2.0-85091315924-
dc.identifier.hkuros327836-
dc.identifier.volume16-
dc.identifier.issue41-
dc.identifier.spagearticle no. 2002628-
dc.identifier.epagearticle no. 2002628-
dc.identifier.isiWOS:000571758500001-
dc.publisher.placeGermany-

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