Electrical Properties of Highly Conducting SnO2:Sb Nanocrystals Synthesized using a Nonaqueous Sol-Gel Method

被引:23
作者
Conti, Tiago G. [1 ]
Chiquito, Adenilson J. [2 ]
da Silva, Rafael O. [1 ]
Longo, Elson [1 ]
Leite, Edson R. [1 ]
机构
[1] Univ Fed Sao Carlos, Dept Chem, LIEC, BR-13565905 Sao Paulo, Brazil
[2] Univ Fed Sao Carlos, Dept Phys, NanoLab, BR-13565905 Sao Paulo, Brazil
基金
巴西圣保罗研究基金会;
关键词
DOPED TIN OXIDE; THIN-FILMS; OPTICAL-PROPERTIES; ORIENTED ATTACHMENT; CRYSTAL-GROWTH; TRANSPARENT; NANOPARTICLES; SB; FLUORINE; INSIGHTS;
D O I
10.1111/j.1551-2916.2010.03979.x
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
This work describes the synthesis of highly conducting antimony-doped tin oxide (ATO) nanocrystals prepared via a nonaqueous sol-gel route in the size range of 4-6 nm and provides insights into its electrical properties. The antimony composition was varied from 1 to 18 mol% and the lowest resistivity (4.0 x 10(-4) Omega . cm) was observed at room temperature in the SnO2:8.8 mol% Sb composition. The samples were evaluated by X-ray diffraction, high-resolution transmission electron microscopy, energy-dispersive X-ray spectroscopy, and scanning electron microscope, and resistivity measurements were taken in the four-probe mode in the temperature range of 13-300 K. The results show highly crystalline nanoparticles in a monodisperse colloidal system, dependence on the shape of ATO nanoparticles as a function of Sb distribution, low resistivity, and semiconductor-metal transition.
引用
收藏
页码:3862 / 3866
页数:5
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