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- Publisher Website: 10.1021/ja4132246
- Scopus: eid_2-s2.0-84896294959
- PMID: 24558950
- WOS: WOS:000332922600013
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Article: Efficiency Enhancement of Perovskite Solar Cells through Fast Electron Extraction: The Role of Graphene Quantum Dots
Title | Efficiency Enhancement of Perovskite Solar Cells through Fast Electron Extraction: The Role of Graphene Quantum Dots |
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Authors | |
Issue Date | 2014 |
Citation | Journal of the American Chemical Society, 2014, v. 136, p. 3760-3763 How to Cite? |
Abstract | We 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 Identifier | http://hdl.handle.net/10722/202571 |
ISSN | 2023 Impact Factor: 14.4 2023 SCImago Journal Rankings: 5.489 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Zhu, Z | en_US |
dc.contributor.author | Ma, J | en_US |
dc.contributor.author | Wang, Z | en_US |
dc.contributor.author | Mu, C | en_US |
dc.contributor.author | Fan, Z | en_US |
dc.contributor.author | Du, L | en_US |
dc.contributor.author | Bai, Y | en_US |
dc.contributor.author | Fan, L | en_US |
dc.contributor.author | Yan, H | en_US |
dc.contributor.author | Phillips, DL | en_US |
dc.date.accessioned | 2014-09-19T08:41:23Z | - |
dc.date.available | 2014-09-19T08:41:23Z | - |
dc.date.issued | 2014 | en_US |
dc.identifier.citation | Journal of the American Chemical Society, 2014, v. 136, p. 3760-3763 | en_US |
dc.identifier.issn | 0002-7863 | - |
dc.identifier.uri | http://hdl.handle.net/10722/202571 | - |
dc.description.abstract | We 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.language | eng | en_US |
dc.relation.ispartof | Journal of the American Chemical Society | en_US |
dc.title | Efficiency Enhancement of Perovskite Solar Cells through Fast Electron Extraction: The Role of Graphene Quantum Dots | en_US |
dc.type | Article | en_US |
dc.identifier.email | Ma, J: h0992054@hku.hk | en_US |
dc.identifier.email | Phillips, DL: phillips@hku.hk | en_US |
dc.identifier.authority | Phillips, DL=rp00770 | en_US |
dc.identifier.doi | 10.1021/ja4132246 | en_US |
dc.identifier.pmid | 24558950 | - |
dc.identifier.scopus | eid_2-s2.0-84896294959 | - |
dc.identifier.hkuros | 237033 | en_US |
dc.identifier.volume | 136 | en_US |
dc.identifier.spage | 3760 | en_US |
dc.identifier.epage | 3763 | en_US |
dc.identifier.eissn | 1520-5126 | - |
dc.identifier.isi | WOS:000332922600013 | - |
dc.identifier.issnl | 0002-7863 | - |