Photorefractive Effect of a Liquid Crystal Cell with a ZnO Nanorod Doped in Only One PVA Layer  

作　　者：GUO Yu-Bing CHEN Yong-Hai XIANG Ying QU Sheng-Chun WANG Zhan-Guo 郭玉冰;陈涌海;项颖;曲胜春;王占国(Key Laboratory of Semiconductor Materials Science,Institute of Semiconductors,Chinese Academy of Sciences,PO Box 912,Beijing 100083;School of Information Engineering,Guangdong University of Technology,Guangzhou 510006)

机构地区：[1]Key Laboratory of Semiconductor Materials Science,Institute of Semiconductors,Chinese Academy of Sciences,PO Box 912,Beijing 100083 [2]School of Information Engineering,Guangdong University of Technology,Guangzhou 510006

出　　处：《Chinese Physics Letters》2011年第9期198-200,共3页中国物理快报（英文版）

基　　金：by the National Natural Science Foundation of China(60625402,60990313);the 973 programme(2006CB604908,2006CB921607).

摘　　要：We observe obviously different diffraction efficiencies with forward and reverse dc voltages in a forced-light-scattering(FLS)experiment for a cell with ZnO nanorod doped in only one poly(vinyl alcohol)(PVA)layer.When a dc voltage with a positive pole on the ZnO nanorod doped side is applied,the excited charge carriers primarily move along the transverse direction,which results in a higher diffraction efficiency.Conversely,when the dc voltage with a negative pole on the ZnO nanorod doped side is applied,the excited charge carriers primarily move along the longitudinal direction,which leads to a lower diffraction efficiency.A largest diffraction efficiency of about 9%is achieved in the ZnO nanorod doped liquid crystal cell.

关 键 词：SCATTERING PHOTOREFRACTIVE CRYSTAL 

分 类 号：TN3[电子电信—物理电子学]