王璐, 鞠纯, 胡小文, 刘丹青, Reinder Coehoorn, 周国富. 聚合物稳定液晶调光器件厚度对其电光性能的影响[J]. 华南师范大学学报(自然科学版), 2017, 49(1): 31-34. doi: 10.6054/j.jscnun.2017037
引用本文: 王璐, 鞠纯, 胡小文, 刘丹青, Reinder Coehoorn, 周国富. 聚合物稳定液晶调光器件厚度对其电光性能的影响[J]. 华南师范大学学报(自然科学版), 2017, 49(1): 31-34. doi: 10.6054/j.jscnun.2017037
WANG L, JU C, HU X W, LIU D Q, R.Coehoorn, ZHOU G F. Effect of Cell Gap on Electro-Optical Properties of a Smart Window Based on Polymer Stabilized Liquid Crystal[J]. Journal of South China Normal University (Natural Science Edition), 2017, 49(1): 31-34. doi: 10.6054/j.jscnun.2017037
Citation: WANG L, JU C, HU X W, LIU D Q, R.Coehoorn, ZHOU G F. Effect of Cell Gap on Electro-Optical Properties of a Smart Window Based on Polymer Stabilized Liquid Crystal[J]. Journal of South China Normal University (Natural Science Edition), 2017, 49(1): 31-34. doi: 10.6054/j.jscnun.2017037

聚合物稳定液晶调光器件厚度对其电光性能的影响

Effect of Cell Gap on Electro-Optical Properties of a Smart Window Based on Polymer Stabilized Liquid Crystal

  • 摘要: 通过采用紫外光聚合诱导相分离法制备聚合物稳定液晶调光器件,利用紫外可见分光光度计来研究器件的不同厚度对聚合物稳定液晶调光器件电光性能的影响. 结果表明:随着器件厚度的增加,器件的关态透光率降低,阈值电压升高,饱和电压升高;当器件厚度为5 m时,聚合物稳定液晶智能调光器件的电光性能优良,未通电时,透光率高达97%,当施加40V电压时,透光率低于10%;响应时间非常短,灵敏度非常高,从关态到开态响应时间仅仅需要0.025 s,从开态到关态响应时间需要0.06 s. 这些优异性能使得基于聚合物稳定液晶的智能窗在室内光线智能管理领域有着巨大的应用潜力.

     

    Abstract: The smart windows based on polymer stabilized liquid crystal (PSLC) are prepared by photopolymerization induced phase separation. The smart windows are transparent at off state (without applied electric field), and turn into an opaque state on application of an external electric field (on state). In this study, the effects of cell gap on the electro-optical properties of smart windows based on PSLC are investigated by UV-visible spectrophotometer. Our result shows that the transmittance at the OFF state decreases with the cell gap increasing, and the threshold voltage and the saturation voltage increase. When cell gap is 5m, the electro-optical properties of smart windows based on PSLC are fine. The transmittance is up to 97% without electric field, but decreases to less than 10% under 40V of applied voltage. Furthermore, the smart window exhibits an excellent response speed, and the switching on time (from off state to on state) is 0.025s, and the switching off time (from on state to off state) is 0.06s. These superior performance makes the smart window enormous potential used as the light management inside buildings.

     

/

返回文章
返回