TY - JOUR
T1 - The photoluminescence of single-phase warm white-light-emitting luminescence using CaSnO3
T2 - Ce3+/ Mn4+/ Dy3+ phosphors
AU - Chen, Yan Xun
AU - Tsai, Meng Hung
AU - Tseng, I. Wei
AU - Yen, Hung Chi
AU - Huang, Cheng Liang
N1 - Publisher Copyright:
© 2021 The Author(s).
PY - 2021
Y1 - 2021
N2 - In this study, the single-phase warm white-light phosphors were synthesized by the conventional solid-state reaction method. A phosphor composed of CaSnO3 with the additions of Ce3+ (0.5 wt%) and Mn4+ (0.3 wt%) shows the optimum emission intensity at a correlated color temperature of 3758 K when excited by a 266 nm laser. The luminescence of another CaSnO3phosphor with the additions of Ce3+ (0.5 wt%), Mn4+ (0.2 wt%), and Dy3+ (0.3 wt%) at a CCT of 3998 K is also studied by an excitation at 325 nm. In addition, the spectral overlap between the emission band of Ce3+ and the excitation band of Mn4+ supports the occurrence of the energy transfer from Ce3+ to Mn4+. The speculated energy transfer mechanism between Ce3+ and Mn4+ has been studied and demonstrated to be the exchanged interactions mechanism. Moreover, the concentration quenching was also observed, and the related critical distance of energy transfer evaluated by the concentration quenching methods is about 23.426 Å.
AB - In this study, the single-phase warm white-light phosphors were synthesized by the conventional solid-state reaction method. A phosphor composed of CaSnO3 with the additions of Ce3+ (0.5 wt%) and Mn4+ (0.3 wt%) shows the optimum emission intensity at a correlated color temperature of 3758 K when excited by a 266 nm laser. The luminescence of another CaSnO3phosphor with the additions of Ce3+ (0.5 wt%), Mn4+ (0.2 wt%), and Dy3+ (0.3 wt%) at a CCT of 3998 K is also studied by an excitation at 325 nm. In addition, the spectral overlap between the emission band of Ce3+ and the excitation band of Mn4+ supports the occurrence of the energy transfer from Ce3+ to Mn4+. The speculated energy transfer mechanism between Ce3+ and Mn4+ has been studied and demonstrated to be the exchanged interactions mechanism. Moreover, the concentration quenching was also observed, and the related critical distance of energy transfer evaluated by the concentration quenching methods is about 23.426 Å.
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U2 - 10.1080/21870764.2021.1936764
DO - 10.1080/21870764.2021.1936764
M3 - Article
AN - SCOPUS:85108590519
SN - 2187-0764
VL - 9
SP - 1055
EP - 1066
JO - Journal of Asian Ceramic Societies
JF - Journal of Asian Ceramic Societies
IS - 3
ER -