ELECTRICAL AND OPTICAL CHARACTERISTICS OF ORGANIC THIN-FILMS FABRICATED BY LASER-ABLATION

Non-polymer organic thin films, copper-phthalocyanine (CuPc) and 4-dia lkylamino-4'-nitrostilbene (DANS), were fabricated by KrF laser ablati on. Crystalline thin films with almost the same composition as the tar get material were deposited when reducing the laser ablation fluence c lose to the ablation threshold of similar to 20 mJ/cm(2). Higher laser fluences deplete some weakly bound atoms in the thin film, such as ni trogen in CuPc. Semiconductor characteristics of CuPc thin film were e xamined in a Schottky diode. DANS-doped amorphous fluoropolymer was al so fabricated by combining two ablation deposition processes. A crysta lline feature of DANS disappears at low DANS concentrations in a fluor opolymer matrix.