公开(公告)号：US20150221815A1

公开(公告)日：2015-08-06

申请号：US14170176

申请日：2014-01-31

Applicant: Cree, Inc.

Inventor： David Clatterbuck ,  Harry Seibel ,  Romit Dhar ,  Robert David Schmidt ,  Daniel Carleton Driscoll ,  Michael John Bergmann

IPC: H01L33/00 ,  H01L33/12 ,  H01L27/15 ,  H01L33/32 ,  H01L33/50

CPC classification number: H01L33/0004 ,  H01L33/32 ,  H01L33/50 ,  H01L2224/48091 ,  H01L2224/48227 ,  H01L2224/48465 ,  H01L2924/00014 ,  H01L2924/00

Abstract: A solid state light emitting device includes a solid state light emitter and a lumiphoric material that are selected for use with one another to provide light emissions with improved (i.e., reduced) thermal droop A solid state emitter having a short peak emission wavelength (e.g., in a visible range at or below 440 nm) seemingly less than optimal at room temperature for use with a particular lumiphor can trigger more efficient stimulation of lumiphor emissions at high temperatures. Enhanced epitaxial structures also inhibit decrease of radiant flux by LEDs at elevated temperatures.

Abstract translation: 固态发光器件包括固态光发射器和被选择用于彼此使用的发光材料，以提供具有短峰值发射波长的改进（即，减少）的热下降固体发射体的光发射（例如， 在等于或低于440nm的可见光范围内）似乎不太适合在室温下与特定的荧光探针一起使用，可以在高温下触发更有效地刺激发光体的辐射。 增强的外延结构还抑制LED在升高的温度下的辐射通量的降低。