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Engineering gratings for light trapping in photovoltaics: The supercell concept

机译:光伏中光阱的工程光栅:超级电池概念

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摘要

The question of the optimal surface structure for light trapping is widely debated in thin-film solar cell research. Here we propose a generic design approach that can tailor the strength of the diffraction orders of a periodic structure. Our approach is based on a supercell geometry that is able to suppress the low orders that do not couple into the quasiguided modes of the thin film. We demonstrate the concept theoretically and experimentally, showing that the supercell outperforms conventional gratings.
机译:在薄膜太阳能电池研究中,对于光捕获的最佳表面结构的问题已引起广泛争议。在这里,我们提出了一种通用的设计方法,可以调整周期性结构的衍射级的强度。我们的方法基于超级单元几何结构,该结构能够抑制不耦合到薄膜准引导模式的低阶。我们在理论上和实验上证明了这一概念,表明超级单元优于传统光栅。

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  • 来源
    《Physical review》 |2012年第4期|p.041404.1-041404.4|共4页
  • 作者单位

    School of Physics and Astronomy, University of St Andrews, St Andrews, Fife KY169SS, UK;

    School of Physics and Astronomy, University of St Andrews, St Andrews, Fife KY169SS, UK State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou, 510275, China;

    School of Physics and Astronomy, University of St Andrews, St Andrews, Fife KY169SS, UK State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou, 510275, China;

    State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou, 510275, China;

    School of Physics and Astronomy, University of St Andrews, St Andrews, Fife KY169SS, UK;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    multilayers; superlattices; diffraction and scattering; fourier optics;

    机译:多层超晶格衍射和散射;傅立叶光学;

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