Pulsed laser deposition of aluminum tris-8-hydroxyquinline thin films

Aluminum tris-8-hydroxyquinline (Alq(3)) thin films have been successfully fabricated by 355 nm pulsed laser deposition. Alq(3) films are characterize d via photoluminescence, X-ray diffraction and Fourier transform infrared s pectroscopy. The films deposited using laser fluence of less than 25 mJ/cm( 2) exhibit amorphous feature and maintain the same composition as the origi nal target. Photoluminescence from Alq(3) film obtained in air is efficient and stable. After exposed to humid air (100% relative humidity) for a week , Alq3 films still keep the same composition and crystallinity as the as-de posited film. The stability of Alq(3) film can be improved by poly(vinylcar bazole) doping or depositing in Ar ambient. (C) 2000 Elsevier Science S.A. All rights reserved.