Abstract
Doping Mn2+ into CsPbCl3 nanocrystals (NCs) has garnered significant attention for its potential to create tailored optical properties in optoelectronic applications. However, this approach still faces challenges, including low photoluminescence quantum yield (PL QY), suboptimal Mn2+ doping efficiency, and inadequate stability. Herein, we delve into the specific realm of Mn2+ doping in CsPbCl3 NCs and delve into the effects of co-doping these NCs with alkaline earth (AE2+) metal ions. Through a comprehensive characterization of the co-doped NCs, we systematically unravel bonding characteristics, and luminescence behaviors induced by AE2+ co-doping. The outcomes underscore the notable enhancement in luminescence performance and stability achieved through AE2+ co-doping, particularly with Sr2+. The utilization of smaller AE2+ results in lattice contraction, leading to improved PL QY and heightened photostability. This work offers valuable insights into tailoring the performance of transition metal-doped semiconductor NCs for advanced optoelectronic devices, establishing a foundation for subsequent optimization and diverse applications.
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