Impact of the refractive index on coupling structures for silicon solar cells

IF 1.5 4区 工程技术 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY
L. Stevens, O. Höhn, Mario Hanser, N. Tucher, C. Müller, S. Glunz, B. Bläsi
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引用次数: 3

Abstract

Abstract. Structured surfaces are used to reduce reflection and enhance light-trapping in silicon solar cells. In this simulation study, we investigated the relationship between the refractive index of front-side coupling structures on top of planar wafer-based crystalline silicon solar cells and the light-trapping performance of the structures. A crossed diffraction grating with a period of 1  μm and random pyramid structures with varying refractive indices were considered. Simulations were carried out both at the cell level and at the complete module stack level. It is shown that the single pass light path enhancement factor (LPEF) only provides a rough estimate of the light-trapping properties. The light-trapping behavior can only be reliably assessed in the complete system level and these results deviate from the estimated single pass LPEF. It can also be shown that the refractive index of the structure strongly influences the light-trapping behavior.
折射率对硅太阳能电池耦合结构的影响
摘要结构化表面用于减少硅太阳能电池中的反射并增强光捕获。在这项模拟研究中,我们研究了平面晶片基晶体硅太阳能电池顶部正面耦合结构的折射率与结构的光捕获性能之间的关系。周期为1的交叉衍射光栅  μm和具有不同折射率的随机金字塔结构。在单元级别和整个模块堆栈级别都进行了模拟。结果表明,单程光路增强因子(LPEF)仅提供了对光捕获特性的粗略估计。光捕获行为只能在完整的系统级别中可靠地评估,并且这些结果偏离估计的单程LPEF。还可以表明,该结构的折射率强烈影响光捕获行为。
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来源期刊
Journal of Photonics for Energy
Journal of Photonics for Energy MATERIALS SCIENCE, MULTIDISCIPLINARY-OPTICS
CiteScore
3.20
自引率
5.90%
发文量
28
审稿时长
>12 weeks
期刊介绍: The Journal of Photonics for Energy publishes peer-reviewed papers covering fundamental and applied research areas focused on the applications of photonics for renewable energy harvesting, conversion, storage, distribution, monitoring, consumption, and efficient usage.
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