| 半导体SnO2纳米晶态粉体显微结构对气敏传感器性能的影响 |
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| 引用本文： | 惠春,陈寿田,徐爱兰,徐毓龙. 半导体SnO2纳米晶态粉体显微结构对气敏传感器性能的影响[J]. 功能材料, 2000, 31(2): 178-179 |
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| 作者姓名： | 惠春 陈寿田 徐爱兰 徐毓龙 |
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| 作者单位： | 1. 西安交通大学电气工程学院,陕西,西安,710049
2. 西安电子科技大学技术物理系,陕西,西安,710071 |
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| 摘 要： | 用ＸＲＤ、ＳＥＭ手段分析了共沉淀工艺和水热合成技术制备的半导体ＳｎＯ２纳米晶态粉体及其厚膜陶瓷材料的显微结构，结果表明两种粉体的晶粒尺寸大约７ｎｍ，但两种粉体的ＸＲＤ照片差异较大。用水热合成技术制备的粉体其颗粒是由纳米晶粒团聚而成，颗凿尺寸大约３００ｎｍ左右，具有较大的表面活性，而具有较大的表面活性，而用共沉淀工艺制备的粉体，颗粒分布较宽，活性差。两种粉体的显微结构对厚膜陶瓷材料显微结构的形成和Ｓ
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| 关 键 词： | SnO2 纳米晶态粉体 气敏传感器 显微结构 |
| 文章编号： | 1001－9731(2000)02－0178－02 |
| 修稿时间： | 1998－12－01 |
Effect of the Microstructure of Semiconductor SnO2 Nanocrystalline Powders on the Properties of Thick Film Gas Sensors |
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| HUI Chun,CHEN Shoutian,XU Ailan,XU Yulong. Effect of the Microstructure of Semiconductor SnO2 Nanocrystalline Powders on the Properties of Thick Film Gas Sensors[J]. Journal of Functional Materials, 2000, 31(2): 178-179 |
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| Authors: | HUI Chun CHEN Shoutian XU Ailan XU Yulong |
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| Affiliation: | HUI Chun ,CHEN Shoutian (Electric and Engineering Colege,Xi' an Jiaotong University,Xi'an,710049,China)XU Ailan ,XU Yulong (Department of Technical and Physics,Xidian University,Xi'an,710071,China) |
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| Abstract: | The microstructure of the semiconductor SnO 2 nanocrystalline powders prepared by coprecipitation processing and hydrothermal synthesize technique and SnO 2 based thick film materials is analyzed with XRD and SEM. The results showed that the crystalline grain size of two kinds of powder is about 7 nanometer.But two kinds of powder are very different in SEM results.The particles of powders prepared by hydrothermal method consist of very small aggregate grains which like a lot of balls and are about 300 nanometer in size,whereas the particles of powders prepared by coprecipitate processing are not homogenous particles in size and poorer in activity.The microstructure of two kinds of powder has obvious influence on the formation of the microstructure of SnO 2 based thick film ceramic materials and the properties of the gas sensors. |
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| Keywords: | SnO 2 nanocrystalline powders gas sensor |
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