TELKOMNIKA Telecommunication, Computing, Electronics and Control
Utilizing CaCO3, CaF2, SiO2, and TiO2 phosphors as approaches to the improved color uniformity and lumen efficacy of WLEDs
Dublin Core
Title
TELKOMNIKA Telecommunication, Computing, Electronics and Control
Utilizing CaCO3, CaF2, SiO2, and TiO2 phosphors as approaches to the improved color uniformity and lumen efficacy of WLEDs
Utilizing CaCO3, CaF2, SiO2, and TiO2 phosphors as approaches to the improved color uniformity and lumen efficacy of WLEDs
Subject
CaCO3
CaF2
Color uniformity
Luminous flux
Mie-scattering theory
SiO2
TiO2
CaF2
Color uniformity
Luminous flux
Mie-scattering theory
SiO2
TiO2
Description
The two elements that are most favorable in the quality evaluation for
phosphor-converted LEDs (pcLEDs) these days are the chromatic
homogeneity and the lumen output. In this study, a thorough research on
enhancing color uniformity and luminous flux of pcLEDs that have a high
correlated color temperature (CCT) of 8500K is carried out. The scattering
enhancement particles (SEPs): CaCO3, CaF2, SiO2, and TiO2 are used to
accomplish the goal by adding them to a yellow phosphor compounding
Y3Al5O12:Ce3+, and comparing their characteristics afterwards. LightTools
program is used to build an optical simulation and Mie-scattering theory helps
to examine the achieved results. Specifically, the parameters included in SEPs’
scattering calculation are the scattering coefficients, the anisotropic scattering,
the reduced scattering, and the scattering amplitudes at 455 nm and 595 nm.
The outcomes presented that compared to other SEPs, TiO2 particles can yield
the highest chromatic homogeneity. However, the lumen output reduces
considerably as TiO2 concentration greatly increases while it can be bettered
when using SiO2 particles with any particle size. For CaCO3 particles, the color
deviation of 620 K CCT can be reduced with 30% concentration, leading to
the recommendation of using CaCO3 to promote the CCT homogeneity and
luminescence efficiency.
phosphor-converted LEDs (pcLEDs) these days are the chromatic
homogeneity and the lumen output. In this study, a thorough research on
enhancing color uniformity and luminous flux of pcLEDs that have a high
correlated color temperature (CCT) of 8500K is carried out. The scattering
enhancement particles (SEPs): CaCO3, CaF2, SiO2, and TiO2 are used to
accomplish the goal by adding them to a yellow phosphor compounding
Y3Al5O12:Ce3+, and comparing their characteristics afterwards. LightTools
program is used to build an optical simulation and Mie-scattering theory helps
to examine the achieved results. Specifically, the parameters included in SEPs’
scattering calculation are the scattering coefficients, the anisotropic scattering,
the reduced scattering, and the scattering amplitudes at 455 nm and 595 nm.
The outcomes presented that compared to other SEPs, TiO2 particles can yield
the highest chromatic homogeneity. However, the lumen output reduces
considerably as TiO2 concentration greatly increases while it can be bettered
when using SiO2 particles with any particle size. For CaCO3 particles, the color
deviation of 620 K CCT can be reduced with 30% concentration, leading to
the recommendation of using CaCO3 to promote the CCT homogeneity and
luminescence efficiency.
Creator
Huu Phuc Dang, Phung Ton That, Nguyen Doan Quoc Anh
Source
http://journal.uad.ac.id/index.php/TELKOMNIKA
Date
Aug 3, 2020
Contributor
peri irawan
Format
pdf
Language
english
Type
text
Files
Collection
Citation
Huu Phuc Dang, Phung Ton That, Nguyen Doan Quoc Anh, “TELKOMNIKA Telecommunication, Computing, Electronics and Control
Utilizing CaCO3, CaF2, SiO2, and TiO2 phosphors as approaches to the improved color uniformity and lumen efficacy of WLEDs,” Repository Horizon University Indonesia, accessed October 31, 2025, https://repository.horizon.ac.id/items/show/3689.
Utilizing CaCO3, CaF2, SiO2, and TiO2 phosphors as approaches to the improved color uniformity and lumen efficacy of WLEDs,” Repository Horizon University Indonesia, accessed October 31, 2025, https://repository.horizon.ac.id/items/show/3689.