Abstract:Antimony tin oxide (ATO) nano-particles doped with different Sb contents were prepared by co-precipitation method, using SnCl₄·5H₂O and SbCl₃ as main raw materials. Microstructure, morphology and reflectivity curves were characterized by XRD, FESEM, UV-visible spectroscopy and laser, and the effects of Sb content on crystalline microstructure, crystal size and reflectivity curves of the ATO nano-particles were investigated systematically. The results show that the ATO nano-particles prepared by co-precipitation method have tetragonal rutile structure, with particle size distribution range of several decade nanometer. With the increase of Sb content, the grain size of ATO decreases, and the unit cell volume increases. Compared with the SnO₂ particles without Sb, the 1.06 μm laser reflection of ATO nano-particles doped with Sb is obviously lower. With the increase of Sb content, the reflection increases first, then decreases; when the Sb content is 20 %, 1.06 μm laser reflection of ATO nano-particles is below 0.02%, and the laser reflection performance is the best.

Key words: antimony tin oxide (ATO); Sb content; co-precipitation method; laser reflection