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Title: Narrow Emission from Rb 3 Sb 2 I 9 Nanoparticles

Journal Article · · Advanced Optical Materials
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  1. Department of Electrical and Computer Engineering University of Toronto Toronto Ontario M5S 1A4 Canada
  2. Department of Physical and Environmental Sciences University of Toronto Scarborough Scarborough Ontario M1C 1A4 Canada

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 Rb 3 Sb 2 I 9 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.

Sponsoring Organization:
USDOE
OSTI ID:
1575297
Journal Information:
Advanced Optical Materials, Journal Name: Advanced Optical Materials Vol. 8 Journal Issue: 1; ISSN 2195-1071
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English
Citation Metrics:
Cited by: 15 works
Citation information provided by
Web of Science

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