| sol-gel法制备ZnFe_2O_4及其NO_2气敏性能的研究 |
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| 引用本文： | 章东兴,简家文,王金霞,沈杰,高建元.sol-gel法制备ZnFe_2O_4及其NO_2气敏性能的研究[J].电子元件与材料,2009,28(11). |
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| 作者姓名： | 章东兴 简家文 王金霞 沈杰 高建元 |
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| 作者单位： | 1. 宁波大学,信息科学与工程学院,浙江,宁波,315211
2. 宁波工程学院,电子与信息工程学院,浙江,宁波,315016 |
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| 基金项目： | 浙江省自然科学基金资助项目 |
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| 摘 要： | 采用sol-gel法制备了尖晶石结构的ZnFe2O4粉体,以其为电极材料在钇稳氧化锆陶瓷片(YSZ)上利用丝网印刷技术制备了片式NO2传感器,并对传感器在不同NO2浓度和不同温度下的输出电动势E和响应时间进行了研究。结果显示:在φ(NO2)为(68～494)×10–6范围内,E随着NO2浓度的增大而增大,并与NO2浓度的对数呈现良好的线性关系。在600℃高温时,传感器上升和下降响应时间分别为60和120s,且重复性较好。但随着工作温度的升高,传感器的灵敏度下降。
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| 关 键 词： | ZnFe2O4 sol-gel法 NO2传感器 气敏性能 响应时间 |
Preparation of ZnFe2O4 via sol-gel method and study on its NO2 gas sensing property |
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| ZHANG Dongxing,JIAN Jiawen,WANG Jinxia,SHEN Jie,GAO Jianyuan.Preparation of ZnFe2O4 via sol-gel method and study on its NO2 gas sensing property[J].Electronic Components & Materials,2009,28(11). |
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| Authors: | ZHANG Dongxing JIAN Jiawen WANG Jinxia SHEN Jie GAO Jianyuan |
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| Abstract: | In this study, ZnFe_2O_4 powders with spinel structure were prepared by the sol-gel method, and planar NO_2 sensor with obtained ZnFe_2O_4 powders as electrode material was fabricated on yttria-stabilized zirconia (YSZ) ceramics chips by means of screen-printing. The output voltage E and response time of prepared sensors were studied under conditions of different NO_2 concentrations and temperatures. The results show that, when the NO_2 concentration is in the range of 68～494×10~(-6), E increases with increasing NO_2 concentration and is proportional to the logarithm of NO_2 concentration. At 600 ℃, the up and down response time of sensor are 60 s and 120 s, respectively, with good repeatability. However, the sensitivity of sensor decreases with increasing working temperature. |
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| Keywords: | ZnFe2O4 |
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