Synthesis and Luminescent Properties of Alq3 Complex

New luminescent material, 6,11-dihydoxy-5,12-naphtacene-dione ·Alq3 complex(Alq2-Ncd), 1,4-dihydoxy-5,8-naphtaquinone ·Alq3 complex(Al2Nq4) was synthesized. The Alq2-Ncd and Al2Nq4 has big molecular weight and many π-electrons more than widely known Alq3. And extended efforts have been made to obtain high-performance electroluminescent(EL) devices. We used hole transfer layer of powdered TPD to improve hole transfer and characteristics of interface in OLED. Current-voltage characteristics, luminance-voltage characteristics and luminous efficiency were measured by Flat Panel Display Analysis System(Model 200-AT) at room temperature. Photoluminescence spectra were measured by LS45(PerkinElmer instruments) at room temperature. This study indicates not only the sterical effect but also some other effects that would be responsible for the change of the emission wavelength, improvement of luminance and etc.