Title :
Monolithic white LED with controllable color temperature
Author :
Kim, Taek ; Kim, Jusung ; Yang, Moonseung ; Park, Yongsoo ; Chung, U-In ; Ko, Yongho ; Cho, Yonghoon
Author_Institution :
Mater. & Devices Center, Samsung Adv. Inst. of Technol., Yongin, South Korea
Abstract :
We have developed monolithic white light emitting diodes (LEDs), which consist of planar planes and nano size hexagonal pyramids structure. The white spectrum is achieved by blue and yellow emissions from the InGaN multi quantum wells (MQWs) on the planar c-planes and on the nano-pyramids, respectively. The color temperature is tuned from 3600K to 6400K by controlling the relative area ratio of c-plane and nano-pyramids.
Keywords :
III-V semiconductors; gallium compounds; indium compounds; light emitting diodes; nanophotonics; nanostructured materials; optical control; quantum well devices; semiconductor quantum wells; wide band gap semiconductors; InGaN; MQW; blue emissions; controllable color temperature; monolithic white LED; monolithic white light emitting diodes; multiquantum wells; nanopyramids; nanosize hexagonal pyramid structure; planar c-planes; relative area ratio; temperature 3600 K to 6400 K; white spectrum; yellow emissions; Color; Gallium nitride; Image color analysis; Light emitting diodes; Nanostructures; Quantum well devices; Scanning electron microscopy;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2012 Conference on
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-4673-1839-6
