Title :
Size effects and light extraction efficiency optimization of III-Nitride light emitting diodes with SiO2 / polystyrene microlens arrays
Author :
Ee, Yik-Khoon ; Kumnorkaew, Pisist ; Arif, Ronald A. ; Tong, Hua ; Gilchrist, James F. ; Tansu, Nelson
Author_Institution :
Dept. of Electr. & Comput. Eng., Lehigh Univ., Bethlehem, PA
Abstract :
Optimization studies of InGaN quantum wells light emitting diodes employing SiO2/polystyrene microlens arrays are conducted. The use of microlens arrays leads to increase in light extraction efficiency by 2.7-times, in agreement with simulation.
Keywords :
III-V semiconductors; gallium compounds; indium compounds; light emitting diodes; microlenses; optimisation; semiconductor quantum wells; silicon compounds; wide band gap semiconductors; III-nitride light emitting diodes; InGaN; SiO2; light extraction; optimization; polystyrene microlens arrays; semiconductor quantum wells; size effects; Computational modeling; Lenses; Light emitting diodes; Microoptics; Optical arrays; Optical refraction; Optical variables control; Ray tracing; Spontaneous emission; Stimulated emission; (230.0250) Optoelectronics; (230.3670) Light-Emitting Diodes;
Conference_Titel :
Lasers and Electro-Optics, 2008 and 2008 Conference on Quantum Electronics and Laser Science. CLEO/QELS 2008. Conference on
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-55752-859-9
