Title :
Novel evaluation procedure for internal and extraction efficiency of high-power blue LEDs
Author :
Titkov, Ilya E. ; Yadav, Ankesh ; Zerova, Vera L. ; Zulonas, Modestas ; Rafailov, E.U. ; Karpov, Sergey Yu ; Strassburg, Martin ; Pietzonka, Ines ; Lugauer, Hans-Juergen ; Galler, Bastian
Author_Institution :
Photonics & Nanosci. Group, Aston Univ., Birmingham, UK
fDate :
June 30 2014-July 4 2014
Abstract :
Internal quantum efficiency (IQE) of a high-brightness blue LED has been evaluated from the external quantum efficiency measured as a function of current at room temperature. Processing the data with a novel evaluation procedure based on the ABC-model, we have determined separately IQE of the LED structure and light extraction efficiency (LEE) of UX:3 chip.
Keywords :
brightness; light emitting diodes; light sources; quantum optics; ABC-model; IQE; LED structure; UX:3 chip; current function; evaluation procedure; external quantum efficiency; high-brightness blue LED; high-power blue LED; internal quantum efficiency; light extraction efficiency; room temperature; temperature 293 K to 298 K; Light emitting diodes; Photonics; III-nitrides; Light-emitting diodes; internal quantum efficiency; light extraction efficiency;
Conference_Titel :
Laser Optics, 2014 International Conference
Conference_Location :
Saint Petersburg
Print_ISBN :
978-1-4799-3884-1
DOI :
10.1109/LO.2014.6886291
