Room temperature doping of Ln³⁺ in perovskite nanoparticles: a halide exchange mediated cation exchange approach

Abstract

This study presents a halide exchange mediated cation exchange strategy for a room temperature doping of trivalent lanthanide cations (Ln3+) in cesium lead halide (CsPbX3) nanoparticles (NPs). Post-synthetic addition of...

Size-dependent chiro-optical properties of CsPbBr3nanoparticles

“…Four different sizes of achiral CsPbBr 3 NPs were synthesized using modifications of previously published hot injection procedures. 33,47,48 In order to imprint chirality onto the achiral NPs, they were post-synthetically ligand-exchanged with solutions of R-(+)-β-methylphenethylammonium bromide (R-MPEABr) or S-(−)-β-methylphenethylammonium bromide (S-MPEABr) in tert-butanol following the procedure outlined in the Experimental methods section. Fig.…”

Ytterbium-Doped Lead–Halide Perovskite Nanocrystals: Synthesis, Near-Infrared Emission, and Open-Source Machine Learning Model for Prediction of Optical Properties

“…In recent years, much attention has been paid to the development of reliable methods for the synthesis of doped metal–halide perovskites. Those can be generally divided into single-step methods where doping occurs directly during the synthesis [ 23 , 29 ] ( Figure 2 a illustrates a prominent example—the so-called “hot-injection method”), and post-synthetic treatment using anion (cation) exchange reactions which result in post-synthetic doping [ 30 , 31 ] ( Figure 2 b).…”

“…In this review, we highlight several parameters for further analysis in terms of pNC size and Yb content, as well as their PL QY, both in NIR and visible (Vis) spectral regions: amount and type of ligands, temperature of the reaction, and Yb-precursor type and its amount in the synthesis. All the dependencies revealed in the discussion later are based on the published data from the papers [ 13 , 15 , 17 , 23 , 26 , 31 , 43 , 44 , 46 , 55 , 56 , 57 , 58 , 59 , 60 ] and provided in Table 1 .…”

“…Their amount in the reaction mixture together with the molar ratio affects both the morphology and optical properties of synthesized NCs. Herein, the syntheses which used both OlAm and OlAc were considered for further analysis ( Figure 5 a–d) [ 13 , 15 , 17 , 23 , 26 , 31 , 43 , 44 , 46 , 55 , 56 , 57 , 58 , 59 , 60 ].…”

“…Data are taken from the refs. [ 13 , 15 , 17 , 23 , 26 , 31 , 43 , 44 , 46 , 55 , 56 , 57 , 58 , 59 , 60 ] and summarized in Table 1 .…”