Title of article
Fabrication of polymer light emitting diodes with ITO/PVK:TPP/Alq3/AI structure
Author/Authors
YAP, C. C. Universiti Kebangsaan Malaysia - Faculty of Science and Technology, Malaysia , YAHAYA, M. Universiti Kebangsaan Malaysia - Faculty of Science and Technology, Malaysia , MURSYIDAH Universiti Kebangsaan Malaysia - Institute of Microengineering and Nanoelectronics (IMEN), Malaysia , SALLER, M. M. Universiti Kebangsaan Malaysia - Institute of Microengineering and Nanoelectronics (IMEN), Malaysia
From page
32
To page
35
Abstract
Polymer light emitting diodes with the configuration of ITOIPVK:TPP/Alq3/AI were fabricated using indium tin oxide (ITO) as anode, poly(9-vinylcarbazole) (PVK) as host, tetraphenylporphyrin (TPP) as red dopant, tris(8-hydroxyquinoline) aluminum (Alq3) as electron transporting green emitter and aluminum (AI) as cathode. The electrical and electroluminescence properties of the devices with various TPP doping concentrations by weight in PVK host were investigated and compared with un-doped device. The tum-on voltage of the un-doped device (von = 21 v) is larger than doped devices (von = 15 v). Besides, the el emission of the un-doped device originates only from Alq3. As for the doped devices, the light observed was the combination from TPP and Alq3 emission with different ratio. The results show that TPP dopants not only facilitates in transporting the electrons from Alq3 to TPP-doped PVK layer but also tune the emission color of the PLEDs.
Keywords
Polymer light emitting diodes , electroluminescence , PVK , TPP , Alq3
Journal title
Journal of Sustainability Science and Management
Journal title
Journal of Sustainability Science and Management
Record number
2644755
Link To Document