Journal
APPLIED PHYSICS LETTERS
Volume 92, Issue 14, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2901378
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A phosphor-converted light-emitting diode was obtained with nearly ideal blue-to-white conversion loss of only 1%. This is achieved using internal reflection to steer phosphor emission away from lossy surfaces, a reflector material with high reflectivity, and a remotely located organic phosphor having (1) unity quantum efficiency (eta(q)), (2) homogeneous refractive index to minimize scattering, and (3) refractive index-matched to the encapsulation to eliminate total internal reflection. An inorganic composite phosphor is also reported with a nearly homogeneous refractive index to minimize diffuse scattering of emitted light, thereby maximizing the effective phosphor eta(q) and light extraction. (C) 2008 American Institute of Physics.
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