Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/145108
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dc.contributor.authorVashishtha, Parthen_US
dc.contributor.authorHooper, Thomas James Nelsonen_US
dc.contributor.authorFang, Yananen_US
dc.contributor.authorDeviana, Kathleenen_US
dc.contributor.authorGiovanni, Daviden_US
dc.contributor.authorKlein, Maciejen_US
dc.contributor.authorSum, Tze Chienen_US
dc.contributor.authorMhaisalkar, Subodh Gautamen_US
dc.contributor.authorMathews, Nripanen_US
dc.contributor.authorWhite, Timen_US
dc.date.accessioned2020-12-11T02:35:09Z-
dc.date.available2020-12-11T02:35:09Z-
dc.date.issued2020-
dc.identifier.citationVashishtha, P., Hooper, T. J. N., Fang, Y., Deviana, K., Giovanni, D., Klein, M., ... White, T. (2020). Room temperature synthesis of low-dimensional rubidium copper halide colloidal nanocrystals with near unity photoluminescence quantum yield. Nanoscale. doi:10.1039/D0NR08093Den_US
dc.identifier.issn2040-3372en_US
dc.identifier.urihttps://hdl.handle.net/10356/145108-
dc.description.abstractMetal lead halide perovskite nanocrystals have emerged as promising candidates for optoelectronic applications. However, the inclusion of toxic lead is a major concern for the commercial viability of these materials. Herein, we introduce a new family of non-toxic reduced dimension Rb2CuX3 (X= Br, Cl) colloidal nanocrystals with one-dimensional crystal structure consisting [CuX4]3- ribbons isolated by Rb+ cations. These nanocrystals were synthesised using a room-temperature method under ambient conditions, which makes them cost effective and scalable. Phase purity quantification was confirmed by Rietveld refinement of powder x-ray diffraction and corroborated by 87Rb MAS NMR technique. Both samples also exhibited high thermal stability up to 500°C, which is essential for optoelectronic applications. Rb2CuBr3 and Rb2CuCl3 displays PL emission peaks at 387 nm and 400 nm with high PLQYs of ~100% and ~49%, respectively. Lastly, the first colloidal synthesis of quantum-confined rubidium copper halide-based nanocrystals opens up a new avenue to exploit their optical properties in lighting technology as well as water sterilisation and air purification.en_US
dc.description.sponsorshipNational Research Foundation (NRF)en_US
dc.language.isoenen_US
dc.relation.ispartofNanoscaleen_US
dc.relation.uri10.21979/N9/RFZWVAen_US
dc.rights© 2020 Royal Society of Chemistry. All rights reserved. This paper was published in Nanoscale and is made available with permission of Royal Society of Chemistry.en_US
dc.subjectEngineering::Materialsen_US
dc.titleRoom temperature synthesis of low-dimensional rubidium copper halide colloidal nanocrystals with near unity photoluminescence quantum yielden_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Materials Science and Engineeringen_US
dc.contributor.schoolSchool of Physical and Mathematical Sciencesen_US
dc.contributor.researchEnergy Research Institute @ NTU (ERI@N)en_US
dc.identifier.doi10.1039/D0NR08093D-
dc.subject.keywordsNanocrystalsen_US
dc.subject.keywordsPhotoluminescence Quantum Yielden_US
dc.description.acknowledgementP.V. acknowledges a Presidential Postdoctoral Fellowship from Nanyang Technological University (NTU), Singapore via grant 04INS000581C150OOE01. M.K., N.M., S.G.M., and T.W. acknowledge financial support from the Singapore National Research Foundation, Prime Minister's Office, through the Competitive Research Program (CRP Award No. NRF-CRP14-2014-03). T.C.S and D.G. acknowledge the financial support from the NRF Investigatorship (NRF-NRFI-2018-04) and the Ministry of Education under its AcRF Tier 1 grant (RG91/19) and Tier 2 grant MOE2019-T2-1-006. The authors would like to acknowledge the Facility for Analysis, Characterization, Testing and Simulation (FACTS) at NTU, Singapore, for use of their electron microscopy and X-ray diffraction facilities. We would also like to acknowledge the NTU Centre of High Field NMR Spectroscopy and Imaging for the use of their NMR facilities. We thank Mr. Sai S. H. Dintakurti and Dr. Ankit, NTU, Singapore.en_US
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