Optical absorption of rectangular a-Si/c-Si solar cells is investigated. Each nanowire consists of a thin layer of a-Si, which surrounded by c-Si layers. The proposed structure has a very simple geometry compared with other nanowire solar cells, while its absorption rate is comparable to very complex structures. Periodic, semiperiodic, and multiple rectangular nanowires are used to achieve broadband absorption. In order to maximize the short-circuit current density of the proposed nanowire solar cells, particle swarm optimization algorithm has been performed. Irregularities have been observed to be one of the ways of absorbing broadband.

中文翻译：

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超薄太阳能电池中a-Si / c-Si矩形纳米线阵列的吸收改善

研究了矩形a-Si / c-Si太阳能电池的光吸收。每条纳米线由a-Si薄层组成，被c-Si层围绕。与其他纳米线太阳能电池相比，所提出的结构具有非常简单的几何形状，而其吸收率可与非常复杂的结构相比。周期性，半周期性和多个矩形纳米线用于实现宽带吸收。为了最大化所提出的纳米线太阳能电池的短路电流密度，已经执行了粒子群优化算法。据观察，不规则性是吸收宽带的方法之一。