TY - JOUR
T1 - Efficient phosphorescent white OLEDs with high color rendering capability
AU - Chang, Chih-Hao
AU - Tien, Kun-Cheng
AU - Chen, Chung-Chia
AU - Lin, Ming-Shiang
AU - Cheng, Hsing-Chieh
AU - Liu, Su-Hao
AU - Wu, Chung-Chih
AU - Hung, Jui-Yi
AU - Chiu, Yuan-Chieh
AU - Chi, Yun
PY - 2010/3
Y1 - 2010/3
N2 - By utilizing a newly developed deep-blue iridium complex along with efficient green and orange-red phosphors, we have successfully demonstrated efficient three-component phosphorescent white-emitting organic light-emitting devices (WOLEDs) with excellent performances. Such WOLEDs were based on the deep-blue phosphorescent OLEDs architecture with double emitting layers and double confining layers; portions of the deep-blue phosphors were selectively replaced with green and orange-red phosphors, thereby forming a structure with the green/orange-red emitting layers sandwiched between the two deep-blue emitting layers. Such three-component phosphorescent WOLEDs yielded a high color rendering index (CRI) of up to 94 and Commission Internationale de l'Eclairage (CIE) coordinates close to the ideal equal-energy white (0.33, 0.33). Furthermore, they exhibited rather stable colors and high CRI over a wide brightness range of 102-104 cd/m2 and yielded electroluminescence efficiencies of up to 10.3%, 24.0 cd/A and 16.4 lm/W for the forward directions.
AB - By utilizing a newly developed deep-blue iridium complex along with efficient green and orange-red phosphors, we have successfully demonstrated efficient three-component phosphorescent white-emitting organic light-emitting devices (WOLEDs) with excellent performances. Such WOLEDs were based on the deep-blue phosphorescent OLEDs architecture with double emitting layers and double confining layers; portions of the deep-blue phosphors were selectively replaced with green and orange-red phosphors, thereby forming a structure with the green/orange-red emitting layers sandwiched between the two deep-blue emitting layers. Such three-component phosphorescent WOLEDs yielded a high color rendering index (CRI) of up to 94 and Commission Internationale de l'Eclairage (CIE) coordinates close to the ideal equal-energy white (0.33, 0.33). Furthermore, they exhibited rather stable colors and high CRI over a wide brightness range of 102-104 cd/m2 and yielded electroluminescence efficiencies of up to 10.3%, 24.0 cd/A and 16.4 lm/W for the forward directions.
KW - Color rendering index
KW - Iridium
KW - Osmium
KW - Phosphorescence
KW - White OLEDs
UR - http://www.scopus.com/inward/record.url?scp=75449112395&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-75449112395&origin=recordpage
U2 - 10.1016/j.orgel.2009.11.020
DO - 10.1016/j.orgel.2009.11.020
M3 - RGC 21 - Publication in refereed journal
SN - 1566-1199
VL - 11
SP - 412
EP - 418
JO - Organic Electronics: physics, materials, applications
JF - Organic Electronics: physics, materials, applications
IS - 3
ER -