Light trapping and photon management of silicon thin film solar cells can be improved by a separate optimization of the front and back contact textures. A separate optimization of the front and back contact textures is investigated by optical simulations taking realistic device geometries into consideration. The optical simulations are confirmed by experimentally realized 1 μm thick microcrystalline silicon solar cells. The different front and back contact textures lead to an enhancement of the short circuit current by 1.2 mA/cm2 resulting in a total short circuit current of 23.65 mA/cm2 and an energy conversion efficiency of 8.35%.
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机译：硅薄膜太阳能电池的光捕获和光子管理可以通过分别优化正面和背面接触纹理来改善。考虑到实际的器件几何形状，通过光学模拟研究了正面和背面接触纹理的单独优化。光学模拟通过实验实现的1μm厚的微晶硅太阳能电池得到证实。正面和背面的不同接触纹理导致短路电流增加1.2 mA / cm 2 ，从而导致总短路电流为23.65 mA / cm 2 ，并且能量转换效率为8.35％。
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