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dc.contributor.authorAn, Mai Ngoc
dc.contributor.authorPark, Sungwook
dc.contributor.authorBrescia, Rosaria
dc.contributor.authorLutfullin, Marat
dc.contributor.authorSinatra, Lutfan
dc.contributor.authorBakr, Osman
dc.contributor.authorDe Trizio, Luca
dc.contributor.authorManna, Liberato
dc.identifier.citationAn, M. N., Park, S., Brescia, R., Lutfullin, M., Sinatra, L., Bakr, O. M., … Manna, L. (2021). Low-Temperature Molten Salts Synthesis: CsPbBr3 Nanocrystals with High Photoluminescence Emission Buried in Mesoporous SiO2. ACS Energy Letters, 900–907. doi:10.1021/acsenergylett.1c00052
dc.description.abstractUsing mesoporous SiO2 to encapsulate CsPbBr3 nanocrystals is one of the best strategies to exploit such materials in devices. However, the CsPbBr3/SiO2 composites produced so far do not exhibit strong photoluminescence emission and, simultaneously, high stability against heat and water. We demonstrate a molten-salts-based approach delivering CsPbBr3/mesoporous-SiO2 composites with high PLQY (89 ± 10%) and high stability against heat, water, and aqua regia. The molten salts enable the formation of perovskite nanocrystals and other inorganic salts (KNO3–NaNO3–KBr) inside silica and the sealing of SiO2 pores at temperatures as low as 350 °C, representing an important technological advancement (analogous sealing was observed only above 700 °C in previous reports). Our CsPbBr3/mesoporous-SiO2 composites are attractive for different applications: as a proof-of-concept, we prepared a white-light emitting diode exhibiting a correlated color temperature of 7692K. Our composites are also stable after immersion in saline water at high temperatures (a typical underground environment of oil wells), therefore holding promise as oil tracers.
dc.description.sponsorshipWe acknowledge funding from the programme for research and Innovation Horizon 2020 (2014-2020) under the Marie Skłodowska-Curie Grant Agreement COMPASS No. 691185 and from the Basic Research in Science & Engineering through the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT (NRF-2020R1C1C1009150 and 2019M3D1A1078299).
dc.publisherAmerican Chemical Society (ACS)
dc.titleLow-Temperature Molten Salts Synthesis: CsPbBr3 Nanocrystals with High Photoluminescence Emission Buried in Mesoporous SiO2
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentKAUST Catalysis Center (KCC)
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalACS Energy Letters
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionDipartimento di Chimica e Chimica Industriale, Università degli Studi di Genova, Via Dodecaneso 31, 16146 Genova, Italy
dc.contributor.institutionDepartment of Energy Science and Center for Artificial Atoms, Sungkyunkwan University, Suwon, 16419, Republic of Korea
dc.contributor.institutionQuantum Solutions, 1 Venture Road, Science Park, Southampton, SO16 7NP. U.K. ()
kaust.personBakr, Osman M.

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