掺杂Cu_2O纳米粒子的近晶相液晶显示器件的电-光特性  

Electro-Optical Properties of Smectic Liquid Crystal Display Doped with Cu_2O Nanoparticles

作　　者：刘发顺[1] 崔晓鹏 赵东宇[1] 许丽红[1] 刘斌[1] 毕伟华[1] 

机构地区：[1]北京航空航天大学化学与环境学院,北京100191 [2]北京京东方显示技术有限公司产品技术部,北京100176

出　　处：《华南师范大学学报（自然科学版）》2017年第1期35-39,共5页Journal of South China Normal University(Natural Science Edition)

基　　金：国家自然科学基金项目(51203005;516730078);中央高校基本科研业务费专项资金资助项目(YWF-13-T-RSC-098)

摘　　要：半导体纳米粒子在外加电场作用下能够产生极化电场,且无极化疲劳现象,可以有效改善液晶电-光性能.文中选用Cu_2O半导体纳米粒子对近晶相液晶4-氰基-4-正苄基联苯(8CB)进行掺杂,研究其对液晶电-光性能的影响.研究发现,Cu_2O纳米粒子表面的正电荷能够增强其与液晶分子间的偶极作用,产生的局域电场加速了液晶分子的转动,降低了阈值电压,极大地改善了近晶相液晶的电-光性能.Semiconducting nanomaterials could produce the polarization electric field without polarization fatigue under electric field, leading to the enhancement of the electric-optical properties of liquid crystals. In our study, Cu2O semiconductor nanoparticles were added into a semctic liquid crystal, 4-cyano-4-octylbi phemy （8CB）, and the effect on electric-optical properties of liquid crystal was studied. Cu2O nanoparticles have a large positive charge, which enhances the interaction with the liquid crystal. And the electric field of the liquid crystal molecules around nanoparticles would speed the switching of molecular of liquid crystals, leading to a reduce of the threshold voltages of liquid crystal and further improving the electric-optical properties of liquid crystal.

关 键 词：液晶显示器件 驱动电压 电-光性能 半导体纳米材料 Cu2O纳米粒子 近晶相液晶 

分 类 号：O482.7[理学—固体物理]