The design, fabrication and property study for photorefractive applications of novel organic materials

Abstract The organic photorefractive (PR) materials and devices have attracted much interest due to the wide potential applications. In this talk, we report the recent study on PR materials and PR physical property in our group. To overcome the disadvantages (e.g. instability and critical environment requirement) of the multi-component PR composite, two novel three-component PR systems were fabricated based on a series of azo dyes and liquid crystals as both EO chromophore and plasticizer, respectively, and the excellent PR performances were obtained. More recent, mono-component PR sample based on a fully functional polymer, poly(9-(2-ethyl-hexyl)-3-[2-(4-methanesulfonyl-phenyl)vinyl]-9H-carbazole), was reported to exhibit two-beam coupling coefficient more than 100 cm−1 at 632.8 nm wavelength at applied electric field of 100 V/μm. The fast response time was obtained from composite doped with β,β-diacetyl-4-methoxylstyrene (DAMST). Besides, DAMST also is the more suitable selection to operate at short wavelength.