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（a）CsCu₂I₃ Pe-LED的电流密度-电压（ J - V ）和亮度-电压（ L - V ）曲线;（b）CsCu₂I₃ Pe-LED的EQE曲线;（c）CsCu₂I₃ Pe-LED的CIE颜色坐标^{[ 59 ]}