The effect of temperature on the color temperature of gan-based led - Details

Author：

Li, Weiguo (Li, Weiguo.) | Guo, Weiling (Guo, Weiling.) | Cui, Bifeng (Cui, Bifeng.) | Xu, Xinwei (Xu, Xinwei.) | Cui, Desheng (Cui, Desheng.)

Indexed by：

EI Scopus

Abstract：

In　this　paper,　two　kinds　of　GaN-based　light　emitting　diodes　(LED)　with　difference　in　color　temperature　were　tested　under　the　temperature　range　from　283K　to　353K　and　current　of　350mA.The　samples　were　fabricated　with　the　same　blue-ray　chip　but　coated　by　different　yttrium　aluminum　garnet　(YAG)　phosphor.　After　analyzing　the　PL　spectrum,　the　result　shows　that　the　color　temperature　of　LED　increases　while　temperature　raising,　what＇s　more,　the　cool-color-temperature　LED　increases　more.　It　also　proves　that　the　color　temperature　of　GaN-based　write　LED　has　relation　to　the　proportion　of　blue　ray　radiant　flux.　©　2011　IEEE.

Keyword：

Phosphors Light emitting diodes Red Shift III-V semiconductors Remote sensing Aluminum coatings Yttrium aluminum garnet Light emission Gallium nitride

Author Community：

[ 1 ] [Li, Weiguo]KEY Laboratory of Opto-electronics Technology, Beijing University of Technology, Beijing, China
[ 2 ] [Guo, Weiling]KEY Laboratory of Opto-electronics Technology, Beijing University of Technology, Beijing, China
[ 3 ] [Cui, Bifeng]KEY Laboratory of Opto-electronics Technology, Beijing University of Technology, Beijing, China
[ 4 ] [Xu, Xinwei]KEY Laboratory of Opto-electronics Technology, Beijing University of Technology, Beijing, China
[ 5 ] [Cui, Desheng]KEY Laboratory of Opto-electronics Technology, Beijing University of Technology, Beijing, China