Abstract:Sn1-xSmxO2 (x=0wt%, 8wt%, 16wt%, 24wt%) micro/nano-fibers were prepared by electrospinning combined with heat treatment. The phase, morphology, infrared emissivity, and laser absorption properties of the products were characterized. The first principles simulation based on density functional theory was used to compare and analyze the photoelectric properties of Sn1-xSmxO2 (x=0wt%, 16wt%) material, and the effect mechanism of Sm3+ doping on the infrared emissivity and laser absorption of SnO2 from the perspective of electronic structure was further clarified. Results show that after calcination at 600 °C, the calcined Sn1-xSmxO2 micro/nano-fibers all present the single rutile structure and show good fiber morphology. The fibers interlace with each other, forming irregular three-dimensional network structure, and the elements are evenly distributed on the fiber. With increasing the Sm3+ doping amount, the reflectivity of Sn1-xSmxO2 micro/nano-fibers is decreased gradually at wavelength of 1.06 and 1.55 μm, and the infrared emission is decreased firstly and then increased. When x=16wt%, the reflectivity at wavelength of 1064 nm is 53.9%, the reflectivity at wavelength of 1550 nm is 38.5%, and the infrared emissivity at wave band of 8?14 μm is 0.749, which provides a theoretical and practical basis for the thin, light, wide-band, and high-performance laser-infrared compatible stealth materials.