Abstract: Single-phase Zn1-xCexO (x=0.0,0.02,0.04,0.06 and 0.08) nanofibers were successfully fabricated via electrospinning technique in combination with subsequent heat treatment using zinc acetate, barium nitrate and polyvinylpyrrolidone as principal raw material. The thermal decomposition process of as-spun precursor nanofibers and the influences of Ce incorporation on the crystal structure, micromorphology, electrical conductivity, infrared emissivity and microwave-absorbing properties of the prepared nanofiber samples were investigated by means of thermogravi-metric and differential thermal analysis, X-ray diffraction, field emission scanning electron microscopy, 4-point probes resistivity measurement system, IR-2 infrared-emissivity analyzer and vector network analyzer. The results show that the Zn1-xCexO nanofibers obtained by calcination at 600 ℃ for 2 h are all hexagonal wurtzite structure with fiber diameter of about 100 nm. With the increase of Ce3+ doping concentration, the infrared emissivity of the sample decreases first and then increases, which is consistent with the change in resistivity. When the doping concentration is 0.04, the lowest infrared emissivity is 0.78. Moreover, the microwave absorption properties of Zn1-xCexO nanofibers was the best as the matching thickness is 1.5 mm. The minimum reflectivity can reach -33.6 dB at 12.3 GHz, and the frequency band with reflectivity less than -10 dB is 11.0—13.8 GHz. It is possible to make Zn1-xCexO nanofibers used as a novel and promising infrared/radar compatible stealth material.
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2019, Vol. 33 
