Laser ablation deposition of crystalline copper-phthalocyanine thin films

The poor crystallinity of copper-phthalocyanine CuPc.thin films fabricated via KrF laser ablation is significantly improved by three different assisting methods applied during deposition: 1. elevating substrate temperature only up to 508C; 2. irradiating with HeNe laser of ;200 mWrcm2; 3. applying DC electric field. Highest crystallinity is obtained when the film is deposited under DC electric field of ;50 Vrcm in the direction of film thickness. This in-process electric poling also works for 4-dialkylamino-4X-nitrostilbensen DANS.film. q1998 Elsevier Science B.V.