The nano-powder of SnO_2–Zn O system was prepared by a co-precipitation method. The influence of LiVO_3 amount on the microstructure and humidity-sensitive characteristics of SnO_2–Zn O was investigated. The experim...The nano-powder of SnO_2–Zn O system was prepared by a co-precipitation method. The influence of LiVO_3 amount on the microstructure and humidity-sensitive characteristics of SnO_2–Zn O was investigated. The experimental results show that the humidity sensitive characteristics and microstructure can be improved when a certain amount of LiVO_3 is added. The impedance measurements at different relative humidity(HR) values indicate that the sensors with doped amount of LiVO_3 of 10 mol.% have an optimum resistance HR linearity at 1 kH z. Based on the results by scanning electron microscopy and complex impedanceanalysis, the high performance of the sensitive layer is associated with a fine microstructure morphology, which is characterized by suitable rod shaped grains forming mesopores.展开更多
基金supported by the National Natural S cience Foundation of China(No.11504059)Science and technology plan of Guangdong Province, China (No. 2015A010105032)+1 种基金Guangdong Province Natural Science Foundation of China (No. 2014A030307004)Guangdong Province Rubber/plastic Materials Preparation & Processing Engineering Technology Development Centre Foundation of China (No. 650801)
文摘The nano-powder of SnO_2–Zn O system was prepared by a co-precipitation method. The influence of LiVO_3 amount on the microstructure and humidity-sensitive characteristics of SnO_2–Zn O was investigated. The experimental results show that the humidity sensitive characteristics and microstructure can be improved when a certain amount of LiVO_3 is added. The impedance measurements at different relative humidity(HR) values indicate that the sensors with doped amount of LiVO_3 of 10 mol.% have an optimum resistance HR linearity at 1 kH z. Based on the results by scanning electron microscopy and complex impedanceanalysis, the high performance of the sensitive layer is associated with a fine microstructure morphology, which is characterized by suitable rod shaped grains forming mesopores.
