Title :
Improved external efficiency of light emitting diode using organic thin film
Author :
Wo-Wai Lai ; Po-King Ng ; Chan, M.C.Y. ; Wai-Kin Chan ; Li, E.H.
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ., Hong Kong
fDate :
Aug. 30 1999-Sept. 3 1999
Abstract :
As many applications nowadays would involve the use of high intensity and easy color tune display devices, organic light emitting diodes (OLEDs) seem to have a high potential in replacing the conventional semiconductor LEDs in the near future. In order to increase the competitive ability of OLED in markets, the paper aims to enhance the external efficiency by texturing the LED surface randomly together with the addition of a reflective coating at the device bottom. Such a method is reported to be successful when applied in conventional semiconductor LEDs. The OLED- ITO/Re-3:PC/Al is used as the example for investigation. A software model of this device is constructed by a computer-program language, all investigations and studies are based on the simulation results of this program.
Keywords :
LED displays; coatings; display devices; optical engineering computing; optical films; organic compounds; surface texture; ITO; ITO/Re-3:PC/Al; InSnO; LED surface; color tune display devices; competitive ability; computer-program language; external efficiency; high intensity display devices; improved external efficiency; light emitting diode; organic light emitting diodes; organic thin film; reflective coating; semiconductor LEDs; simulation results; software model; texturing; Artificial intelligence; Coatings; Consumer electronics; Glass; Light emitting diodes; Lithography; Organic light emitting diodes; Substrates; Surface texture; Transistors;
Conference_Titel :
Lasers and Electro-Optics, 1999. CLEO/Pacific Rim '99. The Pacific Rim Conference on
Conference_Location :
Seoul, South Korea
Print_ISBN :
0-7803-5661-6
DOI :
10.1109/CLEOPR.1999.811396
