Title :
High-efficiency tandem white organic light-emitting diode
Author :
Lin, Shih-Chin ; Cheng, Yu-Sung ; Lu, Kun-Da ; Wen, Hsin-Yi ; Chang, Mei-Ying
Author_Institution :
Dept. of Photonics, Nat. Sun Yat-Sen Univ., Kaohsiung, Taiwan
Abstract :
We have developed high-efficiency tandem white organic light-emitting devices (OLEDs) featuring emission layers comprising a blue light-emitting host material [1, 3, 5-tris(1-pyrenyl)benzene (TPB3)]obtained by high deposition rate, doped with red light-emitting guest material [4-(dicyano-methylene)-2-tert-butyl-6-(1, 1, 7, 7 tetramethyljulolidyl-9-enyl)-4H-pyran (DCJTB)]. The device exhibited a maximum luminance of 72100 cd/m2, a maximum power efficiency of 3.44 lm/W at 8V, and a maximum external quantum efficiency of 4.72% at 20V.
Keywords :
organic light emitting diodes; 1,3,5-tris(l-pyrenyl)benzene; DCJTB; OLED; TPB3; blue light emitting host material; emission layers; external quantum efficiency; power efficiency; red light emitting guest material; voltage 20 V; white organic light emitting diode; Current density; Energy exchange; Green products; Indium tin oxide; Joining processes; Materials; Organic light emitting diodes;
Conference_Titel :
OptoElectronics and Communications Conference (OECC), 2010 15th
Conference_Location :
Sapporo
Print_ISBN :
978-1-4244-6785-3
