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首页> 外文期刊>Advanced Functional Materials >Porous Polymer Films with Gradient-Refractive-Index Structure for Broadband and Omnidirectional Antireflection Coatings
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Porous Polymer Films with Gradient-Refractive-Index Structure for Broadband and Omnidirectional Antireflection Coatings

机译：具有梯度折射率结构的多孔聚合物薄膜，用于宽带和全向减反射涂层

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摘要

Porous polymer films that can be employed for broadband and omnidirectional antireflection coatings are successfully shown. These films form a gradient-refractive-index structure and are achieved by spin-coating the solution of a polystyrene-block-poly(methyl methacrylate) (PS-b-PMMA)/ PMMA blend onto an octadecyltrichlorosilane (OTS)-modifted glass substrate. Thus, a gradient distribution of PMMA domains in the vertical direction of the entire microphase-separated film is obtained. After those PMMA domains are removed, a PS porous structure with an excellent gradient porosity ratio in the vertical direction of the film is formed. Glass substrates coated with such porous polymer film exhibit both broadband and omnidirectional antireflection properties because the refractive index increases gradually from the top to the bottom of the film. An excellent transmittance of >97% for both visible and near-infrared (NIR) light is achieved in these gradient-refractive-index structures. When the incident angle is increased, the total transmittance for three different incident angles is improved dramatically. Meanwhile, the film possesses a color reproduction character in the visible light range.
机译：成功地显示了可用于宽带和全向减反射涂层的多孔聚合物薄膜。这些薄膜形成梯度折射率结构，是通过将聚苯乙烯嵌段聚（甲基丙烯酸甲酯）（PS-b-PMMA）/ PMMA共混物的溶液旋涂到经十八烷基三氯硅烷（OTS）处理的玻璃基板上。因此，获得了在整个微相分离膜的垂直方向上的PMMA畴的梯度分布。在去除那些PMMA域之后，形成在膜的垂直方向上具有优异的梯度孔隙率的PS多孔结构。涂覆有这种多孔聚合物膜的玻璃基板具有宽带和全向抗反射特性，因为折射率从膜的顶部到底部逐渐增加。在这些梯度折射率结构中，可见光和近红外（NIR）光的透射率均> 97％。当入射角增加时，三个不同入射角的总透射率将大大提高。同时，该膜在可见光范围内具有色彩再现特性。

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  • 来源
    《Advanced Functional Materials》 |2010年第2期|259-265|共7页
  • 作者

    Xiao Li; Junpeng Gao; Longjian Xue; Yanchun Han;

  • 作者单位

    State Key Lab of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Graduate School of the Chinese Academy of Sciences 5625 Renmin Street, Changchun 130022 (P.R. China);

    State Key Lab of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Graduate School of the Chinese Academy of Sciences 5625 Renmin Street, Changchun 130022 (P.R. China);

    State Key Lab of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Graduate School of the Chinese Academy of Sciences 5625 Renmin Street, Changchun 130022 (P.R. China);

    State Key Lab of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Graduate School of the Chinese Academy of Sciences 5625 Renmin Street, Changchun 130022 (P.R. China);

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