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A highly efficient (IQE = 90.2%) and thermally stable ( I 150 °C = 88.7%) broadband NIR emitting fluoride Cs 2 KGaF 6 :Cr 3+ is explored. Meanwhile, a multipurpose high-performance NIR pc-LED with a photoelectric conversion efficiency of 22.05% is achieved.
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Wu et al. (2022) studied this question.
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