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Article: Soldering Grain Boundaries Yields Inverted Perovskite Solar Cells with Enhanced Open‐Circuit Voltages

TitleSoldering Grain Boundaries Yields Inverted Perovskite Solar Cells with Enhanced Open‐Circuit Voltages
Authors
KeywordsGrain boundaries
Inorganic hole transport layer
Nickel oxide
Perovskite solar cells
Issue Date2019
PublisherWiley-VCH Verlag GmbH & Co. KGaA. The Journal's web site is located at http://www.ami-journal.com/
Citation
Advanced Materials Interfaces, 2019, v. 6 n. 14, article no. 1900474 How to Cite?
AbstractGrain boundaries (GBs) are one of the major sources of defects in a polycrystalline perovskite solar cell and can greatly increase the rate of charge carrier recombination. In the push to optimize the efficiency of perovskite solar cells, it is therefore extremely important to maximize the grain size and minimize the number of GBs. In the present work, the number of GBs is effectively reduced by introducing a suitable number of formamidinium and chloride ions into the methylammonium lead iodide (MAPbI3) absorber layer. Inverted perovskite solar cells, using NiOx nanocrystals as the low‐temperature‐fabricated hole transport layer, are prepared; the champion cell has an efficiency of 19.6%. This work demonstrates a simple method of minimizing the number of grain boundaries, which is critical to the future development of this technology.
Persistent Identifierhttp://hdl.handle.net/10722/275001
ISSN
2017 Impact Factor: 4.834
2015 SCImago Journal Rankings: 1.177
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLi, Y-
dc.contributor.authorSun, W-
dc.contributor.authorGu, F-
dc.contributor.authorOuyang, D-
dc.contributor.authorBian, Z-
dc.contributor.authorLiu, Z-
dc.contributor.authorChoy, WCH-
dc.contributor.authorKelly, TL-
dc.date.accessioned2019-09-10T02:33:23Z-
dc.date.available2019-09-10T02:33:23Z-
dc.date.issued2019-
dc.identifier.citationAdvanced Materials Interfaces, 2019, v. 6 n. 14, article no. 1900474-
dc.identifier.issn2196-7350-
dc.identifier.urihttp://hdl.handle.net/10722/275001-
dc.description.abstractGrain boundaries (GBs) are one of the major sources of defects in a polycrystalline perovskite solar cell and can greatly increase the rate of charge carrier recombination. In the push to optimize the efficiency of perovskite solar cells, it is therefore extremely important to maximize the grain size and minimize the number of GBs. In the present work, the number of GBs is effectively reduced by introducing a suitable number of formamidinium and chloride ions into the methylammonium lead iodide (MAPbI3) absorber layer. Inverted perovskite solar cells, using NiOx nanocrystals as the low‐temperature‐fabricated hole transport layer, are prepared; the champion cell has an efficiency of 19.6%. This work demonstrates a simple method of minimizing the number of grain boundaries, which is critical to the future development of this technology.-
dc.languageeng-
dc.publisherWiley-VCH Verlag GmbH & Co. KGaA. The Journal's web site is located at http://www.ami-journal.com/-
dc.relation.ispartofAdvanced Materials Interfaces-
dc.subjectGrain boundaries-
dc.subjectInorganic hole transport layer-
dc.subjectNickel oxide-
dc.subjectPerovskite solar cells-
dc.titleSoldering Grain Boundaries Yields Inverted Perovskite Solar Cells with Enhanced Open‐Circuit Voltages-
dc.typeArticle-
dc.identifier.emailChoy, WCH: chchoy@eee.hku.hk-
dc.identifier.authorityChoy, WCH=rp00218-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1002/admi.201900474-
dc.identifier.scopuseid_2-s2.0-85067020777-
dc.identifier.hkuros302816-
dc.identifier.volume6-
dc.identifier.issue14-
dc.identifier.spagearticle no. 1900474-
dc.identifier.epagearticle no. 1900474-
dc.identifier.isiWOS:000478624200018-
dc.publisher.placeGermany-

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