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NIR emission from 650 nm to 1100 nm in a novel Ca ₂ YHf ₂ Al ₃ O ₁₂ :Cr ³⁺ ,Yb ³⁺ garnet phosphor with good thermal stability and high internal quantum efficiency is designed for NIR pc-LEDs.
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Zhang et al. (2021) studied this question.
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