[13p-PA2-1~11] 3.14 Optical control devices and optical fibers

▼ [13p-PA2-1] Synthesis of Photoconductive Polymer for use as the Host Material in Photorefractive Devices

〇(D)KuoLung Wang^1,2, Jia-Cheng Jiang¹, Cang-He Jhu¹, Masaki Horie^1,2, Satoshi Wada², Takafumi Sassa² (1.NTHU, 2.RIKEN)

Keywords:photorefractive performance, photoconductive polymer, plasticizer

In this work, we present the synthesis of main chain conducting polymers with bulky side group for both functions of plasticizing and hole transporting for photorefractive composite matrix purpose. These materials were compounded through palladium catalyst and purified by Soxhlet extraction and silica-gel column chromatography to obtain the high purity grade of polymeric products. With excellent compatibility of organic DCST based chromophore in 30% loading and 1% loading of PCBM, the polymer thin films were prepared with good optical transparency. By applying the external electric field, the devices performance was estimated through the optical four waves mixing (FWM) technique. The result shows that under electric field at 35 V µm^-1 of mild condition, the diffraction efficiency (η) could be observed by 0.3% with the fast response time constant (τ) at 2 ms and the change of refractive index (Δn) approaching to 4×10^-4.