多彩氧化钨薄膜的红外电致变色性能研究  

Infrared Electrochromic Property of the Colorful Tungsten Oxide Films

作　　者：武琦 丛杉[1] 赵志刚[1] WU Qi;CONG Shan;ZHAO Zhigang(Suzhou Institute of Nano-Tech and Nano-Bionics,Chinese Academy of Sciences,Suzhou 215123,China;Nano Science and Technology Institute,University of Science and Technology of China,Suzhou 215123,China)

机构地区：[1]中国科学院苏州纳米技术与纳米仿生研究所,苏州215123 [2]中国科学技术大学纳米科学技术学院,苏州215123

出　　处：《无机材料学报》2021年第5期485-491,共7页Journal of Inorganic Materials

基　　金：国家自然科学基金(51772319,51772320,51972331);江西省自然科学基金(20181ACB20011);中国科学院对外合作项目(121E32KYSB20190008);江苏省六大人才高峰(XCL-170);中国科学院青年创新促进会(2018356);江西省杰出青年基金(20192BCBL23027)。

摘　　要：电致变色材料能够在可见-红外宽频谱范围内对吸收率、透过率、反射率和发射率进行动态调节,是人工调制材料光谱特征的有效手段。在实际应用场合,对于色彩(可见光)与热辐射(红外线)可控调节的需求往往并存,利用单一电致变色器件实现可见、红外双波段的光学调制性能具有重要意义。现阶段对于电致变色材料的设计主要集中于可见光谱的调节能力及颜色转变,忽略了对材料红外光谱的探究。本研究选取具有法布里–铂罗(F-P)空腔结构的多彩氧化钨薄膜进行可见–红外宽频谱电致变色探究,具有F-P空腔结构的氧化钨薄膜材料在可见光区呈现多样化、明亮的颜色,再对多彩薄膜进行图案化设计,即可得到具有各种图案的多彩薄膜,并且在外加偏压的作用下可以实现多样化的颜色转变。同时,多彩氧化钨薄膜的红外反射率也可获得明显的可控调制效果,在中波段(Medium Wave,MW)3.5μm左右处不同颜色薄膜均可获得高于25.00%的红外调制率。本研究表明,多彩氧化钨薄膜可以实现可见–红外宽频谱的分立、可控调节,在智能窗、热管理、辐射制冷等应用领域有巨大潜力,可达到光、热性能协同调制的效果。Electrochromic materials are capable in a dynamically modulation over their absorption,transmission,reflection and emissivity covering the visible and infrared regions,which is recognized as one of the most effective strategies for an artificial control over the optical spectrum.In practical devices,the modulations for color(visible light)and heat(near-infrared irradiation)are both in demand,and thus it is of significant importance to achieve the dual-band control within single electrochromic device.However,the present design of electrochromic materials mainly focuses on the adjustment ability of visible spectrum or color transformation,while leaving the modulation of infrared spectra often negligible.In this study,a multi-color tungsten oxide film with F-P cavity structure is selected to explore the wide-spectrum electrochromism of visible and infrared spectral regions.The tungsten oxide film material with F-P cavity structure presents diversified and bright colors in the visible region with various color patterns,and diversified color alternation can be realized under applied biases.At the same time,the infrared reflectance of colorful tungsten oxide films can also be modulated significantly,for example,infrared modulation rates higher than 25.00%can be obtained in the middle wavelength(around 3.5μm)in the colored films.The research shows that the multi-color tungsten oxide film can realize the discrete and controllable adjustment of the visible and infrared spectral region in the wide spectrum,and has great potential in the application of smart window,thermal management,radiative cooling and other fields,which can even achieve the in-demand cooperative modulation of light and heat performance.

关 键 词：多彩氧化钨 电致变色 红外调制 

分 类 号：TQ174[化学工程—陶瓷工业]