Abstract
A novel light-emitting aluminum complex (PAI) containing the dihydroxy derivative of trans-1,2-dipyridylethene, alpha-pyridoin, was synthesized and its electroluminescent (EL) properties characterized. The chemical structure of the complex was elucidated by FTIR, UV-Vis and XPS. The complex showed thermal stability up to 350 degrees C under nitrogen flow by TGA. The photoluminescence (PL) was measured from PAI cast film on quartz plate. Electroluminescent device having the structure of ITO/TPD/PAI/Al was fabricated by vacuum deposition, where N, N-bis(3-methylphenyl)-N, N-diphenylbenzidine (TPD) was used as a hole transporting layer. The device emitted blue-green light of around 480 nm. The maximum luminance of 38 cd/m(2) and current density of 0.09 mA/cm(2) were observed at 34 V.
NSTL