Research on the stability of luminescence of CsPbBr₃ and Mn:CsPbBr₃ PQDs in polar solution

Abstract

Mn-doped PQDs exhibit higher quantum efficiency of 83.9%. The stabilities of CsPbBr3 PQDs and Mn-doped PQDs decreased as the polarity of solution increased, but Mn-doped PQDs still maintained higher PL intensity than undoped PQDs.

Electrohydrodynamic Printing of PCL@CsPbBr3 Composite Fibers with High Luminescence for Flexible Displays

“…The synthesis method of CsPbBr 3 PQDs is similar to the approach of MC Jiang [34] et al Several minor modifications were made. We prepared a 250 mL three-necked roundbottomed flask, added 10 mL ODE and 0.2 mmol PbBr 2 and dried them under a vacuum of 110 • C and 133 Pa for 1 h, N 2 was used to purge the flask and then OA and OAm were injected into it at 70 • C after they were preheated.…”

Tunable-Color UV-Excitation Sb3+/(Bi3+, Ag+)-Doped Cs2NaInCl6 Perovskite for High-Color-Rendering Full-Spectrum w-LEDs

“…Compared with traditional phosphors, metal halide perovskites APbX 3 (A = Cs + , X = Cl – , Br – , and I – ) have become a new generation of w-LED materials for research highlighted by their outstanding optical properties, such as a higher photoluminescence (PL) quantum yield (PLQY), a higher color purity, and a tunable emission wavelength. − However, the toxicity of the Pb 2+ heavy metal and instability in water and light limit the development for practical application . Recently, the double perovskite structure compounds AM 1 + M 2 3+ X 6 (A = Cs + , M 1 + = Na + and Ag + , and M 2 3+ = Bi 3+ and In 3+ ) formed by replacing Pb 2+ with M 1 + and M 2 3+ have become an effective alternative to lead-based perovskites. − Moreover, although the optical properties of double perovskites are slightly lower than those of the reported cyan phosphors, the broad emission caused by self-trapping excitons (STEs) in the double perovskites can also effectively compensate for the cyan gap, and it can help to realize the full-spectrum w-LEDs. , …”