Title :
Efficient green-blue polymer light emitting electrochemical cells
Author :
Yang Yang ; Qibing Pei
Author_Institution :
UNIAX Corp., Santa Barbara, CA, USA
Abstract :
Summary form only given. Efficient green-blue color light-emitting electrochemical cells (LECs) using ITO and aluminum as electrodes have been demonstrated. Devices with 4% external quantum efficiency and higher than 10 lumens/watt power efficiency have been demonstrated; the brightness is /spl sim/190 cd/m/sup 2/ at 3.1 volts and increases to /spl sim/1000 cd/m2 at 3.5 volts. To our knowledge, this is the best performance reported for polymer and organic light-emitting devices. These polymer LECs show competitive device performance even when compared to the latest gallium nitride light-emitting diodes.
Keywords :
brightness; luminescent devices; organic semiconductors; polymer blends; 3.1 to 3.5 V; 4 percent; brightness; external quantum efficiency; green-blue color; light emitting electrochemical cells; luminescent polymers; polymer blends; polymer light-emitting devices; power efficiency; semiconducting polymers; Cathodes; Charge carrier processes; Charge carriers; Conducting materials; Electrodes; Low voltage; Organic light emitting diodes; Polymer films; Semiconductor device doping; Semiconductor materials;
Conference_Titel :
Device Research Conference, 1996. Digest. 54th Annual
Conference_Location :
Santa Barbara, CA, USA
Print_ISBN :
0-7803-3358-6
DOI :
10.1109/DRC.1996.546413
