Preparation of perovskite CsPb(Br_xI_1−x)₃quantum dots at room temperature

Abstract

Here, we propose a method for preparing red perovskite CsPb(BrxI1−x)3 quantum dots (QDs) at room temperature and successfully applied to WLEDs.

Recent Advances and Challenges in Obtaining Stable CsPbX3 (X = Cl, Br, and I) Nanocrystals Toward White Light-Emitting Applications

“…14,[130][131][132] Dense polymer chains can passivate the surface of perovskite and avoid direct contact with the environment. 14,[130][131][132] Several polymers including, PMMA, 105,106,130,132,133 poly butyl methacrylate (PBMA), 130 polystyrene (PS), 100,101,130,132 poly(maleic anhydride-alt-1-octadecene) (PMA), 134 poly(maleic anhydride-alt-1-octadecene) (PMAO), 107,135 poly(vinylidene difluoride) (PVDF), 104 poly-diphenyl vinylphosphine-styrene copolymer (PDPEP-co-S), 110 epoxy resin (ER), 118 UV resin, 103 poly(styrene-butadiene-styrene) (SBS), 132 poly(L-lactic acid) (PLLA), 136 polyethylene oxide (PEO), superhydrophobic porous organic polymer frameworks (SHFW), 108 thermoplastic polyurethane (TPU), 137 polyvinylpyrrolidone (PVP), 138 styreneethylene-butylene-styrene (SEBS), ethyl acetate (EA), 139 ethylene vinyl acetate (EVA), 131 and others have been utilized as encapsulating or passivating layers for CsPbX 3 NCs. 14,99 The stability of the 95 (b) Normalized PL intensity of CsPbBr 3 NCs@LTA immersed in water for various times.…”

SiO 2 -coated lead halide perovskites core–shell and their applications: a mini-review

“…In recent years, lead halide perovskite materials with the structure ABX 3 (where A is caesium, B is a lead cation and X is a halide anion) exhibit numerous advantages such as high brightness, and high photoluminescence quantum yield (PLQY) with narrow size distribution, which can provide great potential in optoelectronic devices [1]. These lead halide perovskite-based various applications such as solar cells [2][3][4][5][6][7][8][9], photodetectors [10], light-emitting diodes (LEDs) [11][12][13][14][15][16][17] and low-threshold lasers [18][19][20], etc., have been increasingly investigated. Although they have excellent optical properties, the lead halide perovskite materials' sensitive surface chemistry with moisture, oxygen in the ambient environment, and organic polar solvents are still one of the major issues.…”

Printable and Writable CsPbBr3/Cs4PbBr6 Perovskite Quantum Dots as Fluorescent Inks for Down-Conversion Flexible ACEL Devices

“…19,20 Many research groups are also working on the stability and fluorescence properties of perovskites. The research in the fields of ligand modification, 21,22 ion doping, 23 polymer endcapping, 24 and other modification technologies have been relatively mature.…”

“…have been proposed successively. , Many research groups are also working on the stability and fluorescence properties of perovskites. The research in the fields of ligand modification, , ion doping, polymer endcapping, and other modification technologies have been relatively mature. However, technologies such as improving the yield and stability of perovskite materials and preparing perovskite thin films remain challenging.…”