Journal
NANO LETTERS
Volume 20, Issue 5, Pages 3734-3739Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.0c00692
Keywords
rare earth; nanocrystals; blue emission; lead-free halide perovskites
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Funding
- BASF CARA program [241053]
- Office of Science, Office of Basic Energy Sciences of the U.S. Department of Energy [DE-AC02-05CH11231]
- Suzhou Industrial Park
- National Science Foundation Graduate Research Fellowship [DGE 1752814]
- Samsung Scholarship
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Because of the toxicity of lead, searching for a lead-free halide perovskite semiconducting material with comparable optical and electronic properties is of great interest. Rare-earth-based halide perovskite represents a promising class of materials for this purpose. In this work, we demonstrate the solution-phase synthesis of single-crystalline CsEuCl3 nanocrystals with a uniform size distribution centered around 15 nm. The CsEuCl3 nanocrystals have photoluminescence emission centered at 435 nm, with a full width at half-maximum of 19 nm. Furthermore, CsEuCl3 nanocrystals can be embedded in a polymer matrix that provides enhanced stability under continuous laser irradiation. Lead-free rare-earth cesium europium halide perovskite nanocrystals represent a promising candidate to replace lead halide perovskites.
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