Department of Physics, University of Pavia, Pavia, Italy.
Opt Lett. 2012 Dec 1;37(23):4868-70. doi: 10.1364/OL.37.004868.
A theoretical study of randomly rough interfaces to obtain light trapping in thin-film silicon solar cells is presented. Roughness is modeled as a surface with Gaussian disorder, described using the root mean square of height and the lateral correlation length as statistical parameters. The model is shown to describe commonly used rough substrates. Rigorous calculations, with short-circuit current density as a figure of merit, lead to an optimization of disorder parameters and to a significant absorption enhancement. The understanding and optimization of disorder is believed to be of general interest for various realizations of thin-film solar cells.
本文对薄膜硅太阳能电池中的随机粗糙界面进行了理论研究，以实现光捕获。粗糙度模型为具有高斯无序的表面，使用均方根高度和横向相关长度作为统计参数进行描述。该模型可用于描述常用的粗糙衬底。以短路电流密度为评价指标的严格计算，得出了对无序参数的优化和显著的吸收增强。无序的理解和优化被认为对各种薄膜太阳能电池的实现具有普遍意义。
