Synthesis and photoluminescence kinetics of Ce3+-doped CsPbI3 QDs with near-unity PLQY

CsPbI3 perovskite quantum dots (QDs) have great potential in optoelectronic devices due to their suitable band-gaps, but low photoluminescence quantum yields (PLQYs) and poor phase stability seriously impede their practical application. This paper reports the synthesis of Ce3+-doped CsPbI3 QDs by a hot injection method. In the presence of the dopant (Ce3+), the highest PLQY of CsPbI3 QDs reached 99%, i.e., near-unity PLQY, and the...