Lead-free Cesium Europium Halide Perovskite Nanocrystals.
basic_science · Level V
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- Record sourced from PubMed, PMID 32348146.
- Also identified by DOI 10.1021/acs.nanolett.0c00692.
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Abstract
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 CsEuCl<sub>3</sub> nanocrystals with a uniform size distribution centered around 15 nm. The CsEuCl<sub>3</sub> nanocrystals have photoluminescence emission centered at 435 nm, with a full width at half-maximum of 19 nm. Furthermore, CsEuCl<sub>3</sub> 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.