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- Title
INFLUENCE OF SCATTERING ENHANCEMENT PARTICLES CACO<sub>3</sub>, CAF<sub>2</sub>, SIO<sub>2</sub> AND TIO<sub>2</sub> ON COLOR UNIFORMITY OF WHITE LEDS.
- Authors
Nguyen Huu Khanh NHAN; Tran Hoang Quang MINH; Nguyen Doan Quoc ANH
- Abstract
In this paper, the influence of scattering enhancement particles CaCO3, CaF2, SiO2 and TiO2, adding to YAG:Ce phosphor compounding, on color uniformity of white LEDs (W-LEDs) was presented. Firstly, the physical model of multi-chip W-LEDs is simulated and demonstrated by using commercial Light- Tools 8.1.0 program. After that, the influence of scattering enhancement particles on color uniformity is calculated and analyzed. With using the Monte Carlo simulation and the Mie-scattering theory, the color uniformity improvement of an 8500 K W-LEDs is demonstrated convincingly. From the researched results, the best color uniformity can be accomplished with TiO2 particles. The results and discussions provided a practical approach for higher-quality manufacturing W-LEDs.
- Subjects
SCATTERING (Physics); LIGHT emitting diodes; COLORIMETRIC analysis; YTTRIUM aluminum garnet; PHOSPHORS; MONTE Carlo method
- Publication
Advances in Electrical & Electronic Engineering, 2016, Vol 14, Issue 5, p615
- ISSN
1336-1376
- Publication type
Article
- DOI
10.15598/aeee.v14i5.1884