Green solvent assisted synthesis of cesium bismuth halide perovskite nanocrystals and the influences of slow and fast anion exchange rates.

ABSTRACT: Replacing lead in halide perovskites to address the concerns of their toxicity and stability has driven a recent surge in research toward alternative lead-free perovskite materials. Lead-free all inorganic cesium bismuth halide (Cs₃Bi₂X₉) perovskite nanocrystals have attracted attention in recent years due to the air-stability and non-toxic nature of bismuth. Herein, we demonstrate a facile sonication-assisted approach for the preparation of all-inorganic cesium bismuth iodide (Cs₃Bi₂I₉) perovskite nanocrystals (NCs) using propylene carbonate as a green, alternative solvent. The photoluminescence (PL) spectra of the Cs₃Bi₂X₉ NCs have a peak emission that can be tuned from 410 to 550 nm by con

SUBMITTER: Ali RF 

PROVIDER: S-EPMC9419692 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature