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Article: Efficiency Enhancement of Perovskite Solar Cells through Fast Electron Extraction: The Role of Graphene Quantum Dots

TitleEfficiency Enhancement of Perovskite Solar Cells through Fast Electron Extraction: The Role of Graphene Quantum Dots
Authors
Zhu, ZMa, JWang, ZMu, CFan, ZDu, LBai, YFan, LYan, HPhillips, DL
Issue Date2014
Citation
Journal of the American Chemical Society, 2014, v. 136, p. 3760-3763 How to Cite?
DOI: http://dx.doi.org/10.1021/ja4132246
AbstractWe report on a significant power conversion efficiency improvement of perovskite solar cells from 8.81% to 10.15% due to insertion of an ultrathin graphene quantum dots (GQDs) layer between perovskite and TiO2. A strong quenching of perovskite photoluminescence was observed at 760 nm upon the addition of the GQDs, which is pronouncedly correlated with the increase of the IPCE and the APCE of the respective cells. From the transient absorption measurements, the improved cell efficiency can be attributed to the much faster electron extraction with the presence of GQDs (90–106 ps) than without their presence (260–307 ps). This work highlights that GQDs can act as a superfast electron tunnel for optoelectronic devices.
Persistent Identifierhttp://hdl.handle.net/10722/202571
ISSN
0002-7863
2021 Impact Factor: 16.383
2020 SCImago Journal Rankings: 7.115
ISI Accession Number ID
WOS:000332922600013

 

DC FieldValueLanguage
dc.contributor.authorZhu, Zen_US
dc.contributor.authorMa, Jen_US
dc.contributor.authorWang, Zen_US
dc.contributor.authorMu, Cen_US
dc.contributor.authorFan, Zen_US
dc.contributor.authorDu, Len_US
dc.contributor.authorBai, Yen_US
dc.contributor.authorFan, Len_US
dc.contributor.authorYan, Hen_US
dc.contributor.authorPhillips, DLen_US
dc.date.accessioned2014-09-19T08:41:23Z-
dc.date.available2014-09-19T08:41:23Z-
dc.date.issued2014en_US
dc.identifier.citationJournal of the American Chemical Society, 2014, v. 136, p. 3760-3763en_US
dc.identifier.issn0002-7863-
dc.identifier.urihttp://hdl.handle.net/10722/202571-
dc.description.abstractWe report on a significant power conversion efficiency improvement of perovskite solar cells from 8.81% to 10.15% due to insertion of an ultrathin graphene quantum dots (GQDs) layer between perovskite and TiO2. A strong quenching of perovskite photoluminescence was observed at 760 nm upon the addition of the GQDs, which is pronouncedly correlated with the increase of the IPCE and the APCE of the respective cells. From the transient absorption measurements, the improved cell efficiency can be attributed to the much faster electron extraction with the presence of GQDs (90–106 ps) than without their presence (260–307 ps). This work highlights that GQDs can act as a superfast electron tunnel for optoelectronic devices.en_US
dc.languageengen_US
dc.relation.ispartofJournal of the American Chemical Societyen_US
dc.titleEfficiency Enhancement of Perovskite Solar Cells through Fast Electron Extraction: The Role of Graphene Quantum Dotsen_US
dc.typeArticleen_US
dc.identifier.emailMa, J: h0992054@hku.hken_US
dc.identifier.emailPhillips, DL: phillips@hku.hken_US
dc.identifier.authorityPhillips, DL=rp00770en_US
dc.identifier.doi10.1021/ja4132246en_US
dc.identifier.pmid24558950-
dc.identifier.scopuseid_2-s2.0-84896294959-
dc.identifier.hkuros237033en_US
dc.identifier.volume136en_US
dc.identifier.spage3760en_US
dc.identifier.epage3763en_US
dc.identifier.eissn1520-5126-
dc.identifier.isiWOS:000332922600013-
dc.identifier.issnl0002-7863-

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