"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

I agree, do not show this message again.

Silica particles: an innovative recommendation for enhancing the color uniformity and illuminance efficacy of multi-chip white LED lamps

TRAN HOANG QUANG MINH1, NGUYEN HUU KHANH NHAN1, NGUYEN DOAN QUOC ANH2,*

Affiliation

  1. Optoelectronics Research Group, Faculty of Electrical and Electronics Engineering, Ton Duc Thang University, Ho Chi Minh City, Vietnam
  2. Power System Research Group, Faculty of Electrical and Electronics Engineering, Ton Duc Thang University, Ho Chi Minh City, Vietnam

Abstract

In this paper, the effect of silica particle (SiO2) concentration on color and illuminance uniformity of a multi-chip white LEDs (MCW-LEDs) with the correlated color temperature (CCT) near 8500 K is presented and analyzed. It is suggested that the novel phosphor silicone layer (PSL), which is added by silica particles, can improve the uniformity of color correlated temperature (CCT) and illumination. By using LightTools simulation program based on Monte Carlo method, the novel PSL enables the reduction of the CCT deviation (ΔCCT) from 2200 K to 1700 K, while the illuminance uniformity increases from 0.32 to 0.35. The simulation results could be totally proved by Mie theory. This research proposes a prospective approach for high quality manufacturing MCW-LED in the near future..

Keywords

Multi-chip white light LED lamps, Silica, Quartz, Color uniformity, Illuminance.

Submitted at: Sept. 29, 2016
Accepted at: June 7, 2017

Citation

TRAN HOANG QUANG MINH, NGUYEN HUU KHANH NHAN, NGUYEN DOAN QUOC ANH, Silica particles: an innovative recommendation for enhancing the color uniformity and illuminance efficacy of multi-chip white LED lamps, Journal of Optoelectronics and Advanced Materials Vol. 19, Iss. 5-6, pp. 341-346 (2017)