scholarly journals Efficient Organic Blue-Light-Emitting Devices with Double Confinement on Terfluorenes with Ambipolar Carrier Transport Properties

2004 ◽  
Vol 16 (1) ◽  
pp. 61-65 ◽  
Author(s):  
C.-C. Wu ◽  
Y.-T. Lin ◽  
K.-T. Wong ◽  
R.-T. Chen ◽  
Y.-Y. Chien
Keyword(s):  
Transport Properties ◽  
Blue Light ◽  
Carrier Transport ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Carrier Transport Properties

Carrier Transport Dependence on Phosphorescent Materials in Polymer Based OLEDs

2012 ◽  
Vol 1402 ◽  
Author(s):  
Genichi Motomura ◽  
Mitsunori Suzuki ◽  
Takahisa Shimizu ◽  
Hideo Fujikake
Keyword(s):  
Transport Properties ◽  
Carrier Transport ◽  
Energy Levels ◽  
Organic Light Emitting Diodes ◽  
Iridium Complexes ◽  
Dispersive Transport ◽  
Light Emitting ◽  
Organic Light ◽  
Electron Transport Properties ◽  
Carrier Transport Properties

ABSTRACTThe carrier transport properties in the emissive layer of phosphorescent polymer organic light-emitting diodes (OLEDs) were observed by time-of-flight (TOF) mobility measurements. The hole and electron mobilities in carrier transport polymer without iridium complexes were measured with high levels, 3 × 10-4 cm2/Vs (hole) and 1 × 10-3 cm2/Vs (electron), of non-dispersive transport. The hole and/or electron transport properties were degraded when the iridium complexes were included in the phosphorescent polymers. The complexes acted as a trap in the phosphorescent polymers when the energy levels of the iridium complexes were lower than that of the carrier transport polymer.

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