Chaudhry Fateh A, Escandell Lorena, López-Fraguas Eduardo, Vergaz Ricardo, Sánchez-Pena José Manuel, García-Cámara Braulio
GDAF-UC3M, Dep. Tecnología Electrónica, Universidad Carlos III de Madrid, Avda. Universidad, 30, 28911, Leganés, Madrid, Spain.
Sci Rep. 2022 Jun 2;12(1):9240. doi: 10.1038/s41598-022-13418-4.
Cost-effective and lightweight solar cells are currently demanded in strategic fields such as space applications or integrated-wearable devices. A reduction of the active layer thickness, producing thin-film devices, has been a traditional solution to accomplish both requirements. However, this solution also reduces the efficiency of the device. For this reason, alternative strategies are being proposed. In this work, light trapping effects of an array of semiconductor nanoparticles located on the top surface of a thin-film GaAs solar cell are investigated to improve the optical absorption and current density in active layer, under the standard AM-1.5 solar spectrum. The numerical results are compared with other previous proposals such as an aluminum nanoparticle array, as well as conventional solar cells with and without a standard anti-reflective coating (ARC). The inclusion of semiconductor nanoparticles (NPs) shows an improved response of the solar cells at different angles of incidence in comparison to solar cell with an ARC. Furthermore, the efficiency increases a 10% respect to the aluminum nanoparticles (NPs) architecture, and a 21% and a 30% respect to solar cells with and without ARC, respectively.
目前，在太空应用或集成可穿戴设备等战略领域，对具有成本效益且轻便的太阳能电池有需求。减小有源层厚度以制造薄膜器件，一直是满足这两个要求的传统解决方案。然而，这种解决方案也会降低器件的效率。因此，人们正在提出替代策略。在这项工作中，研究了位于薄膜砷化镓太阳能电池顶表面的半导体纳米颗粒阵列的光捕获效应，以在标准AM-1.5太阳光谱下提高有源层中的光吸收和电流密度。将数值结果与其他先前的方案进行比较，如铝纳米颗粒阵列，以及有和没有标准抗反射涂层（ARC）的传统太阳能电池。与带有ARC的太阳能电池相比，包含半导体纳米颗粒（NPs）的太阳能电池在不同入射角下表现出更好的响应。此外，效率相对于铝纳米颗粒（NPs）结构提高了10%，相对于有和没有ARC的太阳能电池分别提高了21%和30%。
