提高薄膜太阳能电池效率的硅纳米棒增透涂层设计

M. Jalali, H. Nadgaran, D. Erni
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引用次数: 1

摘要

本文设计了一种新型的基于硅纳米棒的增透涂层,并对其对晶体硅(c-Si)薄膜太阳能电池性能的影响进行了研究。优化尺寸和周期的硅纳米棒嵌入在活性层的顶部,在100nm的Si3N4层下。由于所提出的层叠加,在两层之间形成了具有有效折射率的非均匀中间层,并实现了渐变折射率的AR涂层,这对反射光谱的广泛全方位降低有实质性的影响。为了验证我们的说法,我们对所提出的结构以及四种传统的AR涂层进行了模拟,并通过对反射因子的光谱响应和硅有源层吸收光谱的数值分析,表明所提出的设计优于现有的传统AR涂层,此外还提供了入射光与有源层的强耦合,同时提高了薄膜的整体效率
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Design of Silicon Nano-bars Anti-Reflection Coating to Enhance Thin Film Solar Cells Efficiency
In this paper a novel antireflection (AR) coating based on silicon nanobars is designed and its impact on the performance of crystalline silicon (c-Si) thinfilm solar cells is extensively studied. Silicon nano-bars with optimized size and period are embedded on top of the active layer, under a 100nm Si3N4 layer. As a result of the proposed layer stack, an inhomogeneous intermediate layer with effective refractive index amid the two layers is formed and a graded refractive index AR coating is achieved, which has a substantial effect on broad, omnidirectional reduction of the reflection spectra. To validate our claim, the proposed structure as well as four conventional AR coatings are simulated and through the numerical analysis of both the spectral response of the reflection factor and the silicon active layer absorption spectra, it is shown that the proposed design outperforms conventional already existing AR coatings, and in addition provides a strong coupling of the incident light to the active layer, while improving the overall efficiency of the thin-film
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