Growth And Optical Characteristics Of The Non-Phosphor White Led By Mixed-Source Hype

In this paper, we report on the growth and optical characteristics of white-LED without fluorescent material. The growth of DH (double heterostructure) with AIGaN active layer was performed on a n-GaN/(0001) Al2O3 by the mixed source HVPE and multi-sliding boat. The CRI (color rendering index) of packaging device charged in the range 72-93 with CIE chromaticity coordinates (x = 0.26 similar to 0.34, y = 0.31 similar to 0.40). And CCT (correlated color temperature) values was measured 5126 similar to 10406 K with increasing injection current. The CIE point of conventional phosphor white LED shifts blue region, but CIE point of non-phosphor white LED shifts opposite direction. These results show the mixed-source HVPE can be possible to newly fabricate method of phosphor free white LED with high CRI value.