Essential Factor for Determining Optical Output of Phosphor-Converted LEDs

IEEE Photonics Journal

Ching-Cherng Sun¹  Ching-Yi Chen¹  Yu-Yu Chang¹  Tsung-Hsun Yang¹  Cheng-Chien Chen¹ 

[1] Department of Optics and Photonics National Central University, Chungli, Taiwan;

关键词: Light-emitting diodes;    fluorescent and luminescent materials;    wavelength conversion devices;   

DOI  :  10.1109/JPHOT.2014.2308630

来源: DOAJ

【 摘 要 】

An essential factor of the particle number is exploited for the phosphor excitation in phosphor-converted white LEDs. The particle number can clearly reveal the dependence of the light output flux and the correlated color temperature upon the conventional parameters, thickness, and concentration of the phosphors in a simpler way. In addition, we also find that there might exist an optimal particle number for the maximal luminous light output. An empirical function is then proposed for successfully modeling the relation between the output light and the particle number.

【 授权许可】

Unknown