supported by the National Natural Science Foundation of China(21533010,21525315);the National Key Research and Development Program of China(2017YFA0204800);DICP DMTO201601,DICP ZZBS201703,and the Science Challenging Program(JCKY2016212A501).
Intrinsic broadband photoluminescence(PL)of self-trapped excitons(STEs)are systematically studied in lead-free double perovskite nanocrystals(NCs).It is clarified that bandgap(direct/indirect)has important influence o...