标题： 光子辅助光捕获通过纳米压印光刻技术集成在超薄晶体硅太阳能电池中 显示英文标题

标题： Photonic assisted light trapping integrated in ultrathin crystalline silicon solar cells by nanoimprint lithography

摘要： 我们报告了通过纳米压印光刻和干法刻蚀制造二维周期性光子纳米结构，并将其集成到1-{\mu }m厚的单晶硅太阳能电池中。 由于周期性纳米图案化，实现了更好的光耦合和光捕获，从而提高了吸收率。 所提出的光捕获机制可以解释为渐变折射率效应和光活性层内光的衍射的叠加。 与基准电池相比，这种吸收增强转化为短路电流23%的增加，从而提高了能量转换效率。 显示英文摘要

摘要： We report on the fabrication of two-dimensional periodic photonic nanostructures by nanoimprint lithography and dry etching, and their integration into a 1-{\mu}m-thin mono-crystalline silicon solar cell. Thanks to the periodic nanopatterning, a better in-coupling and trapping of light is achieved, resulting in an absorption enhancement. The proposed light trapping mechanism can be explained as the superposition of a graded index effect and of the diffraction of light inside the photoactive layer. The absorption enhancement is translated into a 23% increase in short-circuit current, as compared to the benchmark cell, resulting in an increase in energy-conversion efficiency.