聚合物前驱体法制备WO_3薄膜的电致变色性能

Electrochromic Performance of WO_3 Films Prepared by Polymeric Precursor Method

以偏钨酸铵为钨源,Pluronic F127为配位聚合物,在FTO导电玻璃上制备了WO3薄膜,研究了配位聚合物含量对WO3薄膜电致变色性能的影响。实验结果表明,制备的WO3薄膜属于立方晶相;随着Pluronic F127含量的增大,WO3薄膜表面粗糙度增大,电荷容量先增大后减小;当Pluronic F127的含量为26%时,WO3薄膜的电荷容量最大,电致变色性能最好,可见光区域的透光率光学调制范围达到62.68%,光学密度差达到0.864,且着色态的太阳能总透射率低于褪色态的,制备的薄膜具有较好的节能效果。

The WO3 films are prepared on the substrate of FTO conductive glass by using the ammonium metatungstate as the tungsten source and Pluronic F127 as the coordination polymer.The influence of the coordination polymer on the electrochromic performance of WO3 films is investigated.The experimental results show that the WO3 films have a cubic crystal structure.With the increase of the Pluronic F127 content,the WO3 film roughness increases,and the charge capacity increases first and then decreases.When the Pluronic F127 content is 26%,the charge capacity of the WO3 thin films is the largest,and the electrochromic performance is the best.The optical modulation range is up to 62.68% and the optical density difference is up to 0.864 in the visible region.Meanwhile,the total solar energy transmittance in the colored state is lower than that in the bleached state.The prepared thin films have a good energy saving effect.