CsPbX3 (X = Cl, Br, and I) Nanocrystals in Substrates toward Stable Photoluminescence: Nanoarchitectonics, Properties, and Applications

Cesiumlead halide (CsPbX3, X = Cl, Br, and I) perovskite nanocrystals(NCs) possess great potential in light-emitting diode applicationsbecause of their high brightness, low cost, tunable luminescence,and facile synthesis nature. However, these NCs are often disadvantagedby their instability in nonsolvent environment that hinders the practicalapplications of the material. In order to solve these issues, cesiumlead halide NCs prepared using a solvent environment can be placedon substrates to retain the high stability and expand the applicabilityof the material. This Review focuses on the transfer of the all-inorganiccesium lead halide NCs (synthesized in solutions) onto matrix materialsand their direct synthesis on these bases, including the inert shellgrowth (inorganic and organic shell), embedment in matrixes (e.g.,metal organic frameworks, porous SiO2, glass, ZrO2, Al2O3, and AlOOH), and direct synthesis insubstrates. In particular, the strategies for stability and PL propertyimprovement of the materials are also summarized. The purpose of thisReview is to provide inspiration for the encapsulation of cesium leadhalide NCs with high brightness and stability in matrixes to expandthe applicability of these materials in wide color gamut backlighting(e.g., white-light-emitting devices).