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Toward high-efficiency quantum dot solar cells: optimized gratings for ultrathin waveguide devices

机译:迈向高效量子点太阳能电池:超薄波导器件的优化光栅

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We report progress in developing optimized diffraction gratings for coupling solar radiation from the airmass 0 spectrum into waveguide modes of ultrathin quantum dot solar cells (QDSCs). Electromagnetic simulations have been used to optimize the grating geometry and to analyze the nature of diffraction within the device structure. These results suggest that increases in photocurrent of over 100% at wavelengths of QD absorption, corresponding to over 10% improvement in short-circuit current, can be achieved in optimal ultrathin devices by incorporating gratings in the rear contact.
机译:我们报告了开发优化的衍射光栅以将来自大气质量0光谱的太阳辐射耦合到超薄量子点太阳能电池(QDSC)的波导模式中的进展。电磁仿真已用于优化光栅的几何形状并分析器件结构内的衍射特性。这些结果表明,在最佳的超薄器件中,通过在后触点中加入光栅,可以在QD吸收波长处将光电流增加100%以上,从而将短路电流提高10%以上。

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