Enhanced luminescence and energy transfer in Mn²⁺ doped CsPbCl_3−xBr_x perovskite nanocrystals

Abstract

The enhanced luminescence of Mn2+ in Mn2+:CsPbCl3−xBrx NCs is related to Br composition-dependent energy transfer from excitons to Mn2+.

Fe2+ doped in CsPbCl3 perovskite nanocrystals: impact on the luminescence and magnetic properties

“…Cs-oleate precursors and CsPbCl 3 NCs were synthesized following our previous reports. 26,27 In a typical procedure for the synthesis of Fe 2+ doped CsPbCl 3 NCs, PbCl 2 (1Àx mmol) and FeCl 2 (x mmol) were mixed with OLA (1.5 mL), OA (1.5 mL), TOP (1 mL), and ODE (10 mL) in a 50 mL three-neck round-bottomed ask. The reaction mixture was degassed at 110 C for 20 min, and then heated up to 170 C under an argon ow.…”

Rapid synthesis of hybrid methylammonium lead iodide perovskite quantum dots and rich MnI2 substitution favouring Pb-free warm white LED applications

“…11 Additionally, Mn 2+ doping was also reported with CsPbBr 3 , CsPbCl 3Àx Br x and CsPbI 3 inorganic perovskite QDs by different groups. 12,13 On the other hand, no reports are found on Pb substituted HPQDs and most of the studies were found on MAPbBr 3 QDs due to their high stability and PLQY. The rst solution based HPQDs were fabricated by the Pérez-Prieto group in 2014 with a PLQY of 20%.…”

Unraveling the mechanochemical synthesis and luminescence in MnII-based two-dimensional hybrid perovskite (C4H9NH3)2PbCl4

“…4f, the lifetime of band gap transition decreases continuously with the increase of Mn 2+ concentration. The lifetime decreases to 4.682 ns at x=0.20 compared with that at x=0.01 (5.448 ns), suggesting the energy transfer exists between the host and Mn 2+ [14,[36][37][38]. It is confused to explain that the lifetime of Mn 2+ decreases with the increase of Mn 2+ concentration.…”