Narrow Emission from Rb3Sb2I9 Nanoparticles

Andrew Johnston; Filip Dinic; Petar Todorović; Bin Chen; Laxmi Kishore Sagar; Makhsud I. Saidaminov; Sjoerd Hoogland; Oleksandr Voznyy; Edward H. Sargent

doi:10.1002/adom.201901606

Narrow Emission from Rb₃Sb₂I₉ Nanoparticles

Andrew Johnston, Filip Dinic, Petar Todorović, Bin Chen, Laxmi Kishore Sagar, Makhsud I. Saidaminov, Sjoerd Hoogland, Oleksandr Voznyy^*, Edward H. Sargent

^*Corresponding author for this work

Chemistry

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

Metal halide perovskites have gained attention for their optoelectronic properties and are employed as the active layer in solar cells, light-emitting diodes, and photodetectors. However, the use of lead in the best-performing perovskite devices may limit their wider application. Prior reports of lead-free perovskite nanoparticles have exhibited linewidths more than twice as wide as their lead-halide counterparts, limiting their attainable color gamut. Here the solution synthesis of lead-free Rb₃Sb₂I₉ nanoplatelets and single crystals is reported; the single crystals exhibit broad (full-width at half-maximum (FWHM) = 75 nm) photoluminescence centered at 635 nm, while the nanoplatelets exhibit narrow emission (FWHM = 21 nm) at 512 nm. The photoluminescence quantum yield of both the single crystals and nanoplatelets is low and the present demonstration of the narrowest emission among all lead-free perovskites reported to date motivates further study of how these and related materials can achieve further-enhanced brightness.

Original language	English (US)
Article number	1901606
Journal	Advanced Optical Materials
Volume	8
Issue number	1
DOIs	https://doi.org/10.1002/adom.201901606
State	Published - Jan 1 2020

Funding

E.H.S. and all coauthors from the Department of Electrical and Computer Engineering at the University of Toronto acknowledge the financial support from the Ontario Research Fund\u2014Research Excellence Program, the Natural Sciences and Engineering Research Council of Canada (NSERC), and the support from the Global Research Outreach program of Samsung Advanced Institute of Technology. M.I.S. acknowledges the support of Banting Postdoctoral Fellowship Program, administered by the Government of Canada. Single crystal neutron diffraction experiment performed on TOPAZ used resources at the Spallation Neutron Source, a department of energy (DOE) Office of Science User Facility operated by the Oak Ridge National Laboratory, under Contract No. DE-AC05-00OR22725 with UT-Battelle, LLC.

Keywords

lead-free perovskites
light emission
nanocrystals

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics

Access to Document

10.1002/adom.201901606

Cite this

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abstract = "Metal halide perovskites have gained attention for their optoelectronic properties and are employed as the active layer in solar cells, light-emitting diodes, and photodetectors. However, the use of lead in the best-performing perovskite devices may limit their wider application. Prior reports of lead-free perovskite nanoparticles have exhibited linewidths more than twice as wide as their lead-halide counterparts, limiting their attainable color gamut. Here the solution synthesis of lead-free Rb3Sb2I9 nanoplatelets and single crystals is reported; the single crystals exhibit broad (full-width at half-maximum (FWHM) = 75 nm) photoluminescence centered at 635 nm, while the nanoplatelets exhibit narrow emission (FWHM = 21 nm) at 512 nm. The photoluminescence quantum yield of both the single crystals and nanoplatelets is low and the present demonstration of the narrowest emission among all lead-free perovskites reported to date motivates further study of how these and related materials can achieve further-enhanced brightness.",

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AU - Saidaminov, Makhsud I.

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AU - Voznyy, Oleksandr

AU - Sargent, Edward H.

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