无机材料学报2025，Vol.40Issue(7)：781-789,9.DOI:10.15541/jim20240531
基于多孔ITO电极的WO3薄膜的制备及其电致变色性能
WO3 Films Based on Porous ITO Electrodes:Preparation and Electrochromic Property
摘要
Abstract
Electrochromic smart windows can regulate indoor light through modulating optical transmittance of electrochromic materials to realize energy-saving buildings.Amorphous tungsten oxide(WO3)film fabricated by magnetron sputtering technology is the most likely to be industrialized due to its advantages of large-area and uniform deposition.However,electrochromic characteristics of the sputtered WO3 film lag behind those of the solution-process approach due to inefficient ion transport arising from its intrinsically dense atomic structure.In this work,a strategy to develop microstructured magnetron-sputtered WO3 films by introducing the buried porous electrodes to improve the optical modulation and response time was proposed.The results demonstrate that the porous sputtered WO3 films prepared by this method exhibit significantly enhanced electrochromic characteristics compared with the dense WO3 films.When thickness of the porous WO3 increased to 300 nm,the optimized electrochromic characteristics were achieved,with a remarkable optical modulation of up to 79.08%,coloring and bleaching times of only 2.6 and 2.0 s,and a high coloring efficiency of 52.5 cm2/C.The improved performance is mainly attributed to synergistic effect of the porous indium tin oxide(ITO)electrode and the porous WO3 film.The porous ITO electrode can increase the surface area with the increased WO3 component and then increase electronic charges,facilitating the redox reaction process.Moreover,the porous WO3 film offers a larger surface area for the electrolyte,increases reactive active sites and shortens ion diffusion pathway,which accelerates the ion diffusion and migration process,realizing efficient redox reactions and fast ion transport.This work provides an effective method for preparing high-performance micro-and nano-structured sputtered electrochromic films.关键词
电致变色/磁控溅射/ITO电极/多孔WO3Key words
electrochromism/magnetron sputtering/ITO electrode/porous WO3分类
化学化工引用本文复制引用
杨光,张楠,陈舒锦,王义,谢安,严育杰..基于多孔ITO电极的WO3薄膜的制备及其电致变色性能[J].无机材料学报,2025,40(7):781-789,9.基金项目
国家自然科学基金(62304189) （62304189）
福建省自然科学基金(2023J011450,2024J011211)National Natural Science Foundation of China(62304189) （2023J011450,2024J011211）
Natural Science Foundation of Fujian Province(2023J011450,2024J011211) （2023J011450,2024J011211）
