Optical properties of reduced graphene oxide and CuFe2O4 composites in the IR region

• Published in: Infrared physics & technology 2018-01, Vol.88, p.87-91
• Main Authors: Ma, De-yue, Li, Xiao-xia, Guo, Yu-xiang, Zeng, Yu-run
• Format: Article
• Language: English
• Subjects: Copper ferrite; Graphene; K-K relationship; The complex refractive index
• ISSN: 1350-4495; 1879-0275
• DOI: 10.1016/j.infrared.2017.11.019

•The complex refractive index of reduced graphene oxide and CuFe2O4 composites is calculated accurately by K-K relation.•The extinction and absorption efficiency of reduced graphene oxide and CuFe2O4 composites are calculated by T-matrix method.•The normal spectral emissivity of reduced graphene oxide and CuFe2O4 composites are calculated through a series of formula. The complex refractive index of reduced graphene oxide and CuFe2O4 composites prepared by hydrothermal method was calculated using infrared Micro-reflective spectra and K-K relation, and the calculation errors were analyzed according to its IR transmission and spectral reflectivity calculated by Fresnel formula. And then normal emissivity of the composite in IR atmospheric window was calculated by means of Fresnel formula and modified refraction angle formula. The calculation accuracy was verified by comparing measured normal total emissivity with the calculated one. The results show that complex refractive index and normal emissivity calculated by the formulas have a high accuracy. It has been found that the composite has a good absorption and radiation characteristics in IR atmospheric window and a strong scattering ability in middle IR region by analyzing its extinction, absorption and radiation properties in IR region. Therefore, it may be used as IR absorption, extinction and radiation materials in some special fields.