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Triple-layer remote phosphor structure: A potential packaging configuration to enhance both color quality and lumen efficiency of 6,000–8,500 K WLEDs Cover

Triple-layer remote phosphor structure: A potential packaging configuration to enhance both color quality and lumen efficiency of 6,000–8,500 K WLEDs

Materials Science-Poland
Volume 39 (2021): Issue 4 (December 2021)
By: Phan Xuan Le,  Sang Dang Ho,  Nguyen Doan Quoc Anh and  Hsiao-Yi Lee  
Open Access
|Feb 2022

Figures & Tables

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

IngredientMole (%)By weight (g)
CaCO39090
Eu2O35 (of Eu)8.8
NaHCO354.2
MoO3105151

Composition of yellow-green-emitting CaAl2O4:Mn2+ phosphor

IngredientMole (%)By weight (g)
CaCO39393
Al2O3200 (of Al)102
MnCO322.3
CaF253.9
DOI: https://doi.org/10.2478/msp-2021-0037 | Journal eISSN: 2083-134X | Journal ISSN: 2083-1331
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Language: English
Page range: 458 - 466
Submitted on: Apr 9, 2021
|
Accepted on: Jun 29, 2021
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Published on: Feb 18, 2022
Published by: Wroclaw University of Science and Technology
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year
Keywords:
WLEDs,
CaMoO:Eu,
CaAlO:Mn,
luminous efficiency,
color quality,
remote phosphor structure,
triple-layer phosphor structure
Related subjects:
Materials sciences,
Materials sciences, other,
Nanomaterials,
Functional and smart materials,
Materials characterization and properties

© 2022 Phan Xuan Le, Sang Dang Ho, Nguyen Doan Quoc Anh, Hsiao-Yi Lee, published by Wroclaw University of Science and Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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