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Citation: Hui Chun, Xu Ai-Lan. Properties and Mechanism of Nanostructure Thick Film Materials Based on ( Sn,Sb )O_2-x[J]. Acta Physico-Chimica Sinica, ;2001, 17(09): 832-835. doi: 10.3866/PKU.WHXB20010915 shu

Properties and Mechanism of Nanostructure Thick Film Materials Based on ( Sn,Sb )O_2-x

Hui Chun ,
Xu Ai-Lan

1.
Research Institute of Micro/Nanometer Science and Technology,Shanghai Jiaotong University,Shanghai　200030

Received Date: 4 January 2001
Available Online: 15 September 2001

The influence of Sb5＋ ions on SnO2x crystallinity and gassensing properties of the sensors based on the SnO2x powders prepared by hydrothemal synthesis technique was investigated by XRD and TEM.The results show that the doping of Sb5＋ ions in the ranges of (2.9～5.8×10－6) makes the grains of the SnO2x a short column in shape and plays an important role in decreasing the resistance values in air (Ra) for the sensor and controlling the sensitivity to CH4,CO,C2H5OH and H2.Finally,the surface electronic defect effect and the size effect of SnO2x crystallite in nanometer level were discussed to understand the gas sensing mechanism of sensors based on the(Sn,Sb)O2x nanostructure thick film materials.
- SnO_2-x;Nanostructure;Gas sensing material;Mechanism
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Properties and Mechanism of Nanostructure Thick Film Materials Based on ( Sn,Sb )O2-x

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Properties and Mechanism of Nanostructure Thick Film Materials Based on ( Sn,Sb )O_2-x