TELKOMNIKA Telecommunication Computing Electronics and Control
The improvement of the color rendering index using convex-dual-layer remote phosphor geometry with YOCl:Eu3+

TELKOMNIKA Telecommunication Computing Electronics and Control
The improvement of the color rendering index using convex-dual-layer remote phosphor geometry with YOCl:Eu3+

Color rendering index
Dual-layer remote phosphor
geometry WLEDs
Mie-scattering theory
YOCl:Eu3+

White-light emitting diodes (WLEDs) are semiconductor light sources
whose construction design is usually made up of a single pumping chip and
a single light-conversion film of phosphor compound. The outstanding
problem of this traditional setting is the inadequate chroma rendering index
(CRI). Introducing a cluster of multiple blue chips with more than one
phosphor layer is demonstrated to address that flaw of W-LEDs. This
package is called the dual-film remote-phosphor multi-chip WLED. As a
consequence, both the light brightness and the CRI are improved. However,
for the maximum results, the test on the second layer of phosphor has been
performed to continually alter the proportions and densities of phosphor within
the silicone. The researchers employed a unique hue design to control the
white-light light emitting diode (LED) module. When comparing the actual
result to the simulated color coordinates under the hue standard of
international commission on illumination (CIE) 1931, the highest difference
is found to be around 0.0063 for correlated color temperatures (CCT) of
6600 K and 7700 K. Experiments indicate that the setting of multi-chip and
dual-phosphorus is the optimal design for supporting CRI quality and
luminous intensity.

Dieu An Nguyen Thi, Binh Le Nguyen Hoa

http://telkomnika.uad.ac.id

Nov 12, 2022

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