Highly Stable and Efficient Mn 2+ Doping Zero-Dimension Cs 2 Zn x Pb 1- x Cl 4 Alloyed Nanorods toward White Electroluminescent Light-Emitting Diodes.

Zero-dimensional (0D) crystal structure perovskite NCs have reemerged as promising materials owing to their superior long-term stability; however, their poor conductivity leads to the inferior electrical performances and critically restricts the optoelectronic application of 0D perovskite materials. Herien, the alloyed 0D crystal structure Cs 2 Zn x Pb 1- x Cl 4 nanorods (NRs) have been synthesized by the modified hot-injection method, which emits bright blue-violet light at 408 nm, and the optimized photoluminescence quantum yield (PLQY) reaches 26%. The Cs 2 Zn 0.88 Pb 0.12 Cl 4 NRs display more excellent air stability and an order of magnitude higher conductivity than CsPbCl 3 nanocube films. In addition, we dope Mn 2+ ions into the Cs 2 Zn 0.88 Pb 0.12 Cl 4 NRs, which accomplished the optimized PLQY of 40.3% and polarized emission with r = 0.19. The light-emitting diodes (LEDs) based on Mn 2+ ion doped Cs 2 Zn 0.88 Pb 0.12 Cl 4 NRs exhibit a chromaticity coordinate (CIE) of (0.36, 0.33), an EQE of 0.3%, and a maximum luminance of 98 cd m -2 . This work has enriched ideas for the production of white light perovskite LEDs.