Dataset to accompany publication "Re-defining non-tracking solar cell efficiency limits with directional spectral filters"

This dataset accompanies the publication "Re-defining non-tracking solar cell efficiency limits with directional spectral filters" published in ACS Photonics (10.1021/acsphotonics.4c02181). The data can be used to reproduce figures 2-4 in the main text and all plots with data in the supporting information (noting figure 1 in the main text is only schematics). All data was generated via home-built modelling codes. All files are in .CSV and easily readable. The abstract for the associated paper is as follows: Optical filters that respond to the wavelength and direction of incident light can be used to increase the efficiency of tracking solar cells. However, as tracking solar cells are more expensive to install and maintain, it is likely that non-tracking solar cells will remain the main product of the (terrestrial) solar cell industry. Here we demonstrate that wavelength and directionally selective filters can also be used to increase the efficiency limit of non-tracking solar cells at the equator beyond what is currently understood by up to ~ 0.5 % (relative ~ 1.8 %). We also reveal that such filters can be used to regulate the energy output of solar cells throughout a day or year, and can reduce the thickness of the absorber layer by up to 40 %. We anticipate that similar gains would be seen at other latitudes. As this filter has complex wavelength-direction functionality, we present a proof-of-concept design based on Luneburg lenses, demonstrating these filters can be realized. Our results will enable solar cells with higher efficiency and more stable output while using less material.本数据集配套发表于《ACS Photonics》（DOI: 10.1021/acsphotonics.4c02181）的论文《基于定向光谱滤光片重新定义非跟踪式太阳能电池的效率极限》。 本数据集可用于复现正文内图2至图4，以及支持信息中所有带实验数据的绘图（需注意：正文图1仅为示意图）。 所有数据均通过自研建模代码生成，且所有文件均采用.CSV格式，读取便捷。 相关论文的摘要如下： 可响应入射光波长与入射方向的光学滤光片，能够提升跟踪式太阳能电池的光电转换效率。然而，跟踪式太阳能电池的安装与维护成本更高，因此非跟踪式太阳能电池有望长期成为地面太阳能电池产业的主流产品。 本研究证实，波长与方向选择性滤光片还可将赤道地区非跟踪式太阳能电池的效率极限提升至远超当前认知的水平，最大提升幅度可达约0.5%（相对提升约1.8%）。本研究同时发现，此类滤光片可用于调控太阳能电池在单日或全年的能量输出，并可将吸光层厚度最多缩减40%。我们预计，在其他纬度地区也可获得类似的性能提升。鉴于此类滤光片具备复杂的波长-方向调控功能，本研究提出了一种基于鲁宾堡透镜（Luneburg lens）的概念验证设计，证实此类滤光片可被实际制备。本研究成果可助力开发兼具更高光电转换效率、更稳定输出特性且耗材更少的太阳能电池。