Temperature dependent electrical properties of organic light-emitting diodes using a Zn complex.
We synthesized a new electroluminescent material [(1,10-phenanthroline)(8-hydroxyqu inoline)] Zn(phen)q. The temperature dependence of the electrical properties of OLED using Zn(phen)q are studied to understand the electrical conduction mechanism. The current density-voltage characteristics are measured in the temperature range of 60 approximately 240 K and analyzed using a hopping model with an exponential trap distribution. At temperatures above 150 K, hopping conduction with an exponential trap distribution is dominant. We have obtained a characteristic trap depth of E(t) = 0.13 eV.
Kim
Dong-Eun
DE
Department of Electrical Engineering and NTRC, Dong-A University, Busan 604-714, Korea.
Choi
Gyu-Chae
GC
Park
Jun-Woo
JW
Kim
Byoung-Sang
BS
Lee
Burm-Jong
BJ
Kwon
Young-Soo
YS