All-inorganic cesium lead halide perovskite nanocrystals: synthesis, surface engineering and applications

Abstract

Recently, all-inorganic cesium lead halide (CsPbX₃, X = Cl, Br, I) perovskite nanocrystals (NCs) have attracted much attention because of their excellent photophysical properties and promising applications in diverse fields. In this review article, the synthetic methods have been briefly summarized first, followed by the morphological control of CsPbX₃ NCs. To improve their photophysical properties as well as stability, surface passivation strategies, such as chemical treatment and encapsulation approaches, are used and have been summarized. Their representative applications in various fields, including light emitting diodes (LEDs), solar cells, photodetectors, lasers and photocatalysis, have been introduced. Finally, a brief outlook of this field has been proposed to point out some important challenges and possible solutions.