Comment on “Zero-thermal-quenching and photoluminescence tuning with assistance of carriers from defect cluster traps” by Chen et al., J. Mater. Chem. C, 2018, 6, 10687–10692

Chen et al. ( J. Mater. Chem. C , 2018, 6 , 10687–10692) reported that the zero-thermal-quenching behavior of Tb 3+ was the compensation of different trap depths. In this comment, we argue that this unique behavior is just an intrinsic property of Tb 3+ .