Carrier transport properties of organic materials for EL device operation
作者： Shigeki Naka , Hiroyuki Okada , Hiroyoshi Onnagawa , Yoshihisa Yamaguchi , Tetsuo Tsutsui
DOI: 10.1016/S0379-6779(99)00358-6
关键词: Electron mobility 、 Current density 、 Derivative (chemistry) 、 Time of flight 、 Triphenylamine 、 Aluminium 、 Order of magnitude 、 Light-emitting diode 、 Analytical chemistry 、 Chemistry
摘要: We have measured drift mobilities in vacuum deposited films of tris(8-quinolinolato)aluminum (Alq3), a triphenylamine derivative (TPD) and naphtyl-substituted benzidine (α-NPD) using time-of-flight (TOF) technique. The hole TPD α-NPD are about two orders magnitude higher than the electron mobility Alq3. This implies that current density versus applied voltage characteristics is dominated by Alq3 rather or double-layered devices ITO/TPD (50 nm)/Alq3 nm)/MgAg.
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