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首页> 外文期刊>Energy & environmental science >Robust and durable polyhedral oligomeric silsesquioxane-based anti-reflective nanostructures with broadband quasi-omnidirectional propertiesf
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Robust and durable polyhedral oligomeric silsesquioxane-based anti-reflective nanostructures with broadband quasi-omnidirectional propertiesf

机译：具有宽带准全向特性的坚固耐用的多面体低聚倍半硅氧烷低反射型纳米结构

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摘要

Polymer-based anti-reflective coatings (ARCs) on glass pose major challenges for outdoor photovoltaic applications due to their incompatible mechanical and thermal properties. Here we demonstrate durable, chemically and thermally stable polyhedral oligomeric silsesquioxane-based (POSS) anti-reflective moth's eye nanostructures on glass fabricated by double-side nanoimprint lithography. These anti-reflective nanostructures exhibited excellent broadband and quasi-omnidirectional anti-reflective properties. An optimum resist composition for nanoimprinting was obtained by mixing a methacryl POSS cage mixture with 1,6-hexanediol diacrylate in a 1:12 molar ratio. Thermal free radical co-polymerization during nanoimprint lithography produced a uniform array of moth's eye nanostructures on both sides of a glass substrate with yields ~90 to 100%. The transmittance of the resulting glass was enhanced to 98.2% (reflectance 1.26%) with excellent quasi-omnidirectional transmittance observed from -50° to +50° of angles of incidence. Furthermore, a series of ASTM-based tests on the imprinted ARC structures showed strong adherence to glass, better hardness and mechanical strength with superior chemical and thermal stability, thus suggesting their strong potential for commercial applications.
机译：玻璃上的聚合物基抗反射涂层（ARC）由于其机械和热性能不兼容，因此在室外光伏应用中面临着重大挑战。在这里，我们展示了通过双面纳米压印光刻技术在玻璃上制成的持久，化学和热稳定的多面体低聚倍半硅氧烷基（POSS）防反射蛾蛾眼纳米结构。这些抗反射纳米结构表现出优异的宽带和准全向抗反射性能。通过以1:12的摩尔比混合甲基丙烯酸POSS笼混合物和1,6-己二醇二丙烯酸酯，可获得用于纳米压印的最佳抗蚀剂组合物。纳米压印光刻过程中的热自由基共聚在玻璃基板的两侧产生了蛾眼纳米结构的均匀阵列，产率约为90％至100％。从-50°至+ 50°的入射角观察到的优异的准全向透射率将所得玻璃的透射率提高至98.2％（反射率为1.26％）。此外，在压印的ARC结构上进行的一系列基于ASTM的测试显示出对玻璃的强附着力，更好的硬度和机械强度以及出色的化学和热稳定性，因此表明它们在商业应用中具有强大的潜力。

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  • 来源
    《Energy & environmental science》 |2013年第6期|1929-1937|共9页
  • 作者

    Hemant Kumar Raut; Saman Safari Dinachali; Ai Yu He; V. Anand Ganesh; Mohammad S. M. Saifullah; Jaslyn Law; Seeram Ramakrishna;

  • 作者单位

    Department of Mechanical Engineering, National University of Singapore, Singapore 117574, Republic of Singapore,Centre for Nanofibres and Nanotechnology, National University of Singapore,Nanoscience and Nanotechnology Initiative, 2 Engineering Drive 3, Singapore 117576, Republic of Singapore,Institute of Materials Research and Engineering, A*STAR (Agency for Science,Technology and Research), 3 Research Link, Singapore 117602, Republic of Singapore,Solar Energy Research Institute of Singapore, National University of Singapore,Singapore 117574, Republic of Singapore;

    Department of Mechanical Engineering, National University of Singapore, Singapore 117574, Republic of Singapore,Institute of Materials Research and Engineering, A*STAR (Agency for Science,Technology and Research), 3 Research Link, Singapore 117602, Republic of Singapore;

    Institute of Materials Research and Engineering, A*STAR (Agency for Science,Technology and Research), 3 Research Link, Singapore 117602, Republic of Singapore;

    Department of Mechanical Engineering, National University of Singapore, Singapore 117574, Republic of Singapore,Centre for Nanofibres and Nanotechnology, National University of Singapore,Nanoscience and Nanotechnology Initiative, 2 Engineering Drive 3, Singapore 117576, Republic of Singapore,Institute of Materials Research and Engineering, A*STAR (Agency for Science,Technology and Research), 3 Research Link, Singapore 117602, Republic of Singapore,Solar Energy Research Institute of Singapore, National University of Singapore,Singapore 117574, Republic of Singapore;

    Institute of Materials Research and Engineering, A*STAR (Agency for Science,Technology and Research), 3 Research Link, Singapore 117602, Republic of Singapore;

    Institute of Materials Research and Engineering, A*STAR (Agency for Science,Technology and Research), 3 Research Link, Singapore 117602, Republic of Singapore;

    Department of Mechanical Engineering, National University of Singapore, Singapore 117574, Republic of Singapore,Centre for Nanofibres and Nanotechnology, National University of Singapore,Nanoscience and Nanotechnology Initiative, 2 Engineering Drive 3, Singapore 117576, Republic of Singapore;

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