The preparation of SnO2 and SnO2 : Sb nanopowders by a hydrothermal method

Tóm tắt

Nanopowders of antimony-doped tin oxide have been prepared by a hydrothermal method with Sb dopant concentration changed from 0 to 3 at.%. The hydrothermal treatment was carried out from 180 to 220 °C in 24 h. The structure and morphology of the product were characterized by x-ray diffraction and transmission electron microscopy (TEM). TEM images of samples show that the size of SnO2 : Sb nanoparticles is in the range 4–5 nm. The absorption and luminescence properties of samples were investigated at room temperature. The band gap of SnO2 : Sb varied from 3.9 to 4.2 eV with variation of the Sb dopant concentration. The nature of the photoluminescence peaks of the SnO2 : Sb nanoparticles will be discussed.

Tài liệu tham khảo

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