Data for: Role of the base fluid on the enhancement absorption properties of Fe3O4 / ionic liquid nanofluids for direct absorption solar collectors

Data form Spectroscopic ellipsometer (VUV-VASE, J.A.Woollam Co.,Inc., the wavelength range is 400nm-1500nm) for: Role of base fluid on enhancement absorption properties of Fe3O4 / ionic liquid nanofluids for direct absorption solar collector本数据集的数据来源于光谱椭偏仪（Spectroscopic Ellipsometer，型号VUV-VASE，由J.A.Woollam Co.,Inc.生产，测试波长范围为400纳米至1500纳米），对应研究主题为：基液对应用于直接吸收式太阳能集热器（Direct Absorption Solar Collector）的四氧化三铁/离子液体（Ionic Liquid）纳米流体（Nanofluid）吸收性能增强效应的影响。