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首页> 外文期刊>Journal of optics >Optimal enhancement in conversion efficiency of crystalline Si solar cells using inverse opal photonic crystals as back reflectors
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Optimal enhancement in conversion efficiency of crystalline Si solar cells using inverse opal photonic crystals as back reflectors

机译：使用反蛋白石光子晶体作为背反射器，可优化提高晶体硅太阳能电池的转换效率

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摘要

The effect of using inverse opal photonic crystals as back reflectors on the power conversion efficiency of c-Si solar cells is investigated. The reflection spectra of inverse opal photonic crystals with different diameters of air spheres are simulated using the finite difference time domain (FDTD) method. The reflection peaks are correlated with photonic band gaps present in the photonic band gap diagram. Significant improvement in the optical absorption of the crystalline silicon layer is recorded when inverse opal photonic crystals are considered. Physical mechanisms which may contribute to the enhancement of the light absorption are underlined. With higher short-circuit current enhancement possible, and with no corresponding degradation in open-circuit voltage Voc or the fill factor, the power conversion efficiency is increased significantly when inverse opal photonic crystals are used as back reflectors with optimized diameter of air spheres.
机译：研究了使用反蛋白石光子晶体作为背反射器对c-Si太阳能电池功率转换效率的影响。利用时差有限差分法（FDTD）模拟了不同球径的反蛋白石光子晶体的反射光谱。反射峰与存在于光子带隙图中的光子带隙相关。当考虑反蛋白石光子晶体时，记录了晶体硅层的光吸收的显着改善。强调了可能有助于增强光吸收的物理机制。借助更高的短路电流增强能力，并且开路电压Voc或填充因数没有相应降低，当使用反蛋白石光子晶体作为优化了球体直径的后反射器时，功率转换效率会显着提高。

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