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Efficient plasmonic nanostructures for thin film solar cells

机译：薄膜太阳能电池的高效等离子体纳米结构

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Recent scientific publications have highlighted the possibility of enhancing solar conversion efficiency in thin film solar cells using surface plasmon (SP) waves and resonances. One main strategy is to deposit layers of metal nanoparticles on the top of a thin film silicon solar cell which can increase light absorption and consequently the energy conversion in the frequency range where the silicon intrinsic absorptance is low. In this paper, we investigate the effects produced on the light absorption and scattering by silver nanoparticles, arranged in a periodic pattern, placed on the top of amorphous silicon (α-Si) thin layer. We propose different geometry of metal objects, quantifying the scattering (back and forward) determined by the nanoparticles in dependence of their shapes and Si thickness. The analysis reveals that the thickness of the substrate has huge influence on the scattering, in particular on the back one, when the nanoparticles have corners, whereas it seems less dramatic when rounded profiles are considered (nanospheres).
机译：最近的科学出版物强调了利用表面等离激元（SP）波和共振提高薄膜太阳能电池的太阳能转换效率的可能性。一种主要策略是将金属纳米颗粒层沉积在薄膜硅太阳能电池的顶部，这可以增加光吸收，从而提高硅固有吸收率低的频率范围内的能量转换。在本文中，我们研究了放置在非晶硅（α-Si）薄层顶部的周期性排列的银纳米颗粒对光吸收和散射产生的影响。我们提出了金属物体的不同几何形状，根据纳米粒子的形状和Si厚度量化了纳米粒子确定的散射（向前和向后）。分析表明，当纳米颗粒有角时，基材的厚度对散射有很大影响，特别是对背面的散射，而考虑到圆形轮廓（纳米球）时，基材的厚度似乎不太明显。

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