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Engineering Sr-doping for enabling long-term stable FAPb1xSrxI3 quantum dots with 100% photoluminescence quantum yield
dc.contributor.author | Gualdrón Reyes, Andrés Fabián | |
dc.contributor.author | Macias-Pinilla, David F. | |
dc.contributor.author | Masi, Sofia | |
dc.contributor.author | Echeverría-Arrondo, Carlos | |
dc.contributor.author | Agouram, Said | |
dc.contributor.author | Muñoz-Sanjosé, Vicente | |
dc.contributor.author | Rodríguez-Pereira, Jhonatan | |
dc.contributor.author | Macak, Jan | |
dc.contributor.author | Mora-Sero, Ivan | |
dc.date.accessioned | 2021-06-03T08:02:32Z | |
dc.date.available | 2021-06-03T08:02:32Z | |
dc.date.issued | 2021-02-01 | |
dc.identifier.citation | GUALDRÓN-REYES, Andrés F., et al. Engineering Sr-doping for enabling long-term stable FAPb 1− x Sr x I 3 quantum dots with 100% photoluminescence quantum yield. Journal of Materials Chemistry C, 2021, vol. 9, no 5, p. 1555-1566. | ca_CA |
dc.identifier.issn | 2050-7526 | |
dc.identifier.uri | http://hdl.handle.net/10234/193258 | |
dc.description.abstract | The Pb substitution in quantum dots (PQDs) with lesser toxic metals has been widely searched to be environmentally friendly, and be of comparable or improved performance compared to the lead-perovskite. However, the chemical nature of the lead substitute influences the incorporation mechanism into PQDs, which has not been explored in depth. In this work, we analyzed Sr-doping-induced changes in FAPbI3 perovskites by studying the optical, structural properties and chemical environment of FAPb1−xSrxI3 PQDs. The substitution of Pb by 7 at% Sr allows us to achieve FAPb1−xSrxI3 PQDs with 100% PLQY, high stability for 8 months under a relative humidity of 40–50%, and T80 = 6.5 months, one of the highest values reported for halide PQDs under air ambient conditions. FAPb0.93Sr0.07I3 PQDs also exhibit photobrightening under UV illumination for 12 h, recovering 100% PLQY at 15 days after synthesis. The suppression of structural defects mediated by Sr-doping decreases the non-radiative recombination mechanism. By attempting to increase the Sr content in PQDs, a mixture of 2D nanoplatelets/3D nanocubes has emerged, caused by a high Pb deficiency during the FAPb1−xSrxI3 synthesis. This contribution gives a novel insight to understand how the suitable/poor Pb substitution achieved through Sr-doping dictates the photophysical properties of PQDs that may be potentially applicable in optoelectronics. | ca_CA |
dc.format.extent | 12 p. | ca_CA |
dc.format.mimetype | application/pdf | ca_CA |
dc.language.iso | eng | ca_CA |
dc.publisher | Royal Society of Chemistry | ca_CA |
dc.relation.isPartOf | J. Mater. Chem. C, 2021,9, 1555-1566 | ca_CA |
dc.relation.uri | http://www.rsc.org/suppdata/d0/tc/d0tc04625f/d0tc04625f1.pdf | |
dc.relation.uri | http://www.rsc.org/suppdata/d0/tc/d0tc04625f/d0tc04625f2.xlsx | |
dc.rights.uri | http://creativecommons.org/licenses/by-nc/4.0/ | * |
dc.source | https://pubs.rsc.org/en/journals/journalissues/tc#!recentarticles&adv | ca_CA |
dc.subject | enabling long-term stable | ca_CA |
dc.subject | engineering Sr-doping | ca_CA |
dc.subject | photoluminescence quantum yield | ca_CA |
dc.title | Engineering Sr-doping for enabling long-term stable FAPb1xSrxI3 quantum dots with 100% photoluminescence quantum yield | ca_CA |
dc.type | info:eu-repo/semantics/article | ca_CA |
dc.identifier.doi | https://doi.org/10.1039/D0TC04625F | |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | ca_CA |
dc.type.version | info:eu-repo/semantics/publishedVersion | ca_CA |
project.funder.name | European Research Council (ERC) | ca_CA |
project.funder.name | European Commission | ca_CA |
project.funder.name | Ministerio de Asuntos Económicos y Transformación Digital | ca_CA |
project.funder.name | Generalitat Valenciana | ca_CA |
project.funder.name | Universitat de València | ca_CA |
project.funder.name | Ministry of Youth, Education and Sports of the Czech Republic | ca_CA |
project.funder.name | Universitat Jaume I | ca_CA |
oaire.awardNumber | 724424–No-LIMIT | ca_CA |
oaire.awardNumber | 862656 – DROP-IT | ca_CA |
oaire.awardNumber | TEC2017-85912-C2-2 | ca_CA |
oaire.awardNumber | Prometeo/2018/098 | ca_CA |
oaire.awardNumber | LM2018103 | ca_CA |
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