Title :
Improvement of angular-dependent CCT uniformity by ZrO2 nano-particles in remote phosphor white LEDs
Author :
Chen, Hung Chi ; Chen, Kevin J. ; Wang, C.H. ; Tsai, H.H. ; Lin, C.C. ; Shih, M.H. ; Kuo, H.C.
Author_Institution :
Dept. of Photonic, Nat. Chiao Tung Univ., Hsinchu, Taiwan
Abstract :
The superior uniformity of angular-dependent CCT white LEDs have been investigated by ZrO2-type remote phosphor structure. This novel structure reduces angular-dependent CCT deviations from 1000K to 420K in range of -70 to 70 degrees.
Keywords :
light emitting diodes; nanoparticles; phosphors; zirconium compounds; ZrO2; angular-dependent CCT deviations; angular-dependent CCT white LED uniformity; remote phosphor white LED; temperature 420 K to 1000 K; zirconia nanoparticles; zirconia-type remote phosphor structure; Color; Electrooptical waveguides; Light emitting diodes; Phosphors; Photonics; Refractive index; Slurries;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2012 Conference on
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-4673-1839-6
