title: Nanoscale interlayer that raises response rate in photorefractive liquid crystal polymer composites.
abstract: By depositing a nanoscale photoconductive layer on a stable photorefractive (PR) polymeric film, consisting of the polymer poly[N-vinylcarbazole] (PVK) doped with 4,4'-n-pentylcyanobiphenyl (5CB) and C60, both the response rate and beam coupling properties were improved greatly. Systematic measurements and observations unveiled the role played by the additive layer in preventing ion injection from the ITO layer into the PR film and hence in mitigating the charge compensation. A strong fanning effect and high diffraction orders at small angles have demonstrated the excellent PR property in the modified samples used. To demonstrate great potential of the PR composite in the updatable applications, real time double exposure interferometry was performed accordingly with good results.
authors.affiliation: Department of Physics, Harbin Institute of Technology, Harbin, 150001, China.
authors.forename: Hua
authors.initials: H
authors.lastname: Zhao
authors.forename: Chao
authors.initials: C
authors.lastname: Lian
authors.forename: Xiudong
authors.initials: X
authors.lastname: Sun
authors.forename: Jingwen W
authors.initials: JW
authors.lastname: Zhang
mesh_terms: D001713:Biphenyl Compounds / Q000737:chemistry*; D037741:Fullerenes / Q000737:chemistry*; D006696:Holography / Q000295:instrumentation* / Q000379:methods; D007368:Interferometry / Q000295:instrumentation / Q000379:methods; D050866:Liquid Crystals / Q000737:chemistry*; D008962:Models, Theoretical; D036103:Nanotechnology / Q000295:instrumentation* / Q000379:methods; D009570:Nitriles / Q000737:chemistry*; D011145:Polyvinyls / Q000737:chemistry*; D012031:Refractometry / Q000295:instrumentation / Q000379:methods; D013696:Temperature
chemical_list: D001713:Biphenyl Compounds; D037741:Fullerenes; D009570:Nitriles; D011145:Polyvinyls; C035125:poly-N-vinylcarbazole; C433919:4-cyano-4'-pentylbiphenyl; C069837:fullerene C60