State of the art and prospects of metal halide perovskite core@shell nanocrystals and nanocomposites

Emerging New‐Generation Detecting and Sensing of Metal Halide Perovskites

“…With the rapid development of nanodrug delivery technology, luminescent probes are necessary in monitoring tumour-targeted drug delivery. [165][166][167] Compared with other luminescent materials, MHP nanoparticles have been regarded as next-generation biomedical optical probes that target cancer cells due to their excellent water [4,168] and thermal stabilities, [67] good acid and alkali resistances, biocompatibility [154] with a core-shell structure, and outstanding all-optical and photoluminescence (PL) properties. MHP luminescent probes are promising in realizing the full monitoring of nano-drug delivery systems.…”

Synthesis of highly stable double-coated Zn-doped cesium lead bromide nanocrystals for indium ion detection in water

“…[21][22][23] Coating of perovskite NCs with comparatively stable shells, such as lower-dimensional perovskites [e.g., (OA) 2 PbBr 4 , Cs 4 PbX 6 ], metal oxides (e.g., SiO 2 , TiO 2 ), and metal sulfides (e.g., ZnS, PbS), help improve NC stability and emission intensity, and resist ion migration among the NCs. [26][27][28][29][30][31][32][33][34] Compared with the rigid inorganic shell, polymers are much more flexible and increase the hydrophobicity of the core NCs, thereby improving their water stability. Surface coating of perovskite NCs with bulky polymers [e.g., poly(methyl methacrylate) (PMMA), polyhedral oligomeric silsesquioxane (POSS), polyvinylpyrrolidone (PVP), and polystyrene (PS)] enhance NC stability and improve dispersivity in different polar solvents.…”

“…Surface coating of perovskite NCs with bulky polymers [e.g., poly(methyl methacrylate) (PMMA), polyhedral oligomeric silsesquioxane (POSS), polyvinylpyrrolidone (PVP), and polystyrene (PS)] enhance NC stability and improve dispersivity in different polar solvents. 26,27,[35][36][37] SiO 2 -coated perovskite NCs are also used in various applications due to their better stability in polar solvents. 21,[38][39][40][41] Usually, water and alcohol originate from the hydrolysis and condensation processes of silica, which can attack perovskite NCs and generate surface defects.…”

“…, ZnS, PbS), help improve NC stability and emission intensity, and resist ion migration among the NCs. 26–34…”

Cs-Lattice Extension and Expansion for Inducing Secondary Growth of CsPbBr3 Perovskite Nanocrystals

“…Perovskite nanocrystals have recently emerged as one of the most interesting materials for applications in energy and optoelectronics. − With tremendous progress in the last 5 years, origins of their phase instability and enhancement of photoluminescence intensity are more clearly understood; ,,− but their growth mechanism leading to transformation from one size domain to another has not yet been achieved. Further, significant efforts have been put forward to bring stability to these nanocrystals under ambient atmosphere and particularly toward polar media. − One of the key approaches widely adopted for nanocrystals is shelling with a different material, − which would boost the tolerance towards environmental exposure and protect the core nanocrystals emitters. Unfortunately, no success has been achieved yet for epitaxial secondary growth, , even with same material.…”