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Materials Science-Poland
Volumen 39 (2021): Edición 4 (December 2021)
Acceso abierto
Triple-layer remote phosphor structure: A potential packaging configuration to enhance both color quality and lumen efficiency of 6,000–8,500 K WLEDs
Phan Xuan Le
Phan Xuan Le
,
Sang Dang Ho
Sang Dang Ho
,
Nguyen Doan Quoc Anh
Nguyen Doan Quoc Anh
y
Hsiao-Yi Lee
Hsiao-Yi Lee
| 18 feb 2022
Materials Science-Poland
Volumen 39 (2021): Edición 4 (December 2021)
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Publicado en línea:
18 feb 2022
Páginas:
458 - 466
Recibido:
09 abr 2021
Aceptado:
29 jun 2021
DOI:
https://doi.org/10.2478/msp-2021-0037
Palabras clave
WLEDs
,
CaMoO:Eu
,
CaAlO:Mn
,
luminous efficiency
,
color quality
,
remote phosphor structure
,
triple-layer phosphor structure
© 2021 Phan Xuan Le et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Fig. 1
(A) WLEDs; (B) its parameters; (C) illustration of triple-layer remote phosphor configuration; (D) the simulation of WLEDs; (E) the measured spectra of the yellow-emitting YAG:Ce3+ phosphor; (F) the measured spectra of the red-emitting CaMoO4:Eu3+ phosphor. WLEDs, white light-emitting diodes
Fig. 2
Color rendering index of triple-layer remote phosphor structure as a function of red-emitting CaMoO4:Eu3+ and green-emitting CaAl2O4:Mn2+ phosphors
Fig. 3
CQS of triple-layer remote phosphor structure as a function of red-emitting CaMoO4:Eu3+ and green-emitting CaAl2O4:Mn2+ phosphors. CQS, color quality scale
Fig. 4
Lumen output of triple-layer remote phosphor structure as a function of red-emitting CaMoO4:Eu3+ and green-emitting CaAl2O4:Mn2+ phosphors
Fig. 5
The emission spectra of WLEDs under varying conditions of the triple-layer structure. WLEDs, white light-emitting diodes
Composition of red-emitting CaMoO4:Eu3+ phosphor
Ingredient
Mole (%)
By weight (g)
CaCO
3
90
90
Eu
2
O
3
5 (of Eu)
8.8
NaHCO
3
5
4.2
MoO
3
105
151
Composition of yellow-green-emitting CaAl2O4:Mn2+ phosphor
Ingredient
Mole (%)
By weight (g)
CaCO
3
93
93
Al
2
O
3
200 (of Al)
102
MnCO
3
2
2.3
CaF
2
5
3.9