Ontology highlight
ABSTRACT:
SUBMITTER: Lee KH
PROVIDER: S-EPMC4443774 | biostudies-literature | 2015 May
REPOSITORIES: biostudies-literature
Scientific reports 20150526
This study examined systematically the mechanism of light interaction in the sapphire/MgF2/Al triple-layer omnidirectional reflectors (ODR) and its effects on the light output power in near ultraviolet light emitting diodes (NUV-LEDs) with the ODR. The light output power of NUV-LEDs with the triple-layer ODR structure increased with decreasing surface roughness of the sapphire backside in the ODR. Theoretical modeling of the roughened surface suggests that the dependence of the reflectance of th ...[more]