| 复合钒钼酸干凝胶薄膜湿敏元件的感湿机理 |
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| 引用本文： | 李莉,童茂松,翁爱华. 复合钒钼酸干凝胶薄膜湿敏元件的感湿机理[J]. 电子元件与材料, 2006, 25(6): 30-32 |
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| 作者姓名： | 李莉 童茂松 翁爱华 |
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| 作者单位： | 大庆石油学院化学化工学院,黑龙江,大庆,163318;大庆石油管理局测井公司研发中心,黑龙江,大庆,163412;吉林大学地球探测科学与技术学院,吉林,长春,130026 |
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| 摘 要： | 采用sol-gel法,制备了复合钒钼酸H2V8.5Mo3.5O32.nH2O干凝胶薄膜湿敏元件。测试频率为1 kHz时,元件全湿范围内线性响应好,灵敏度高,最大湿滞约为RH 2.74%,响应、恢复时间分别为8 s和20 s,283~303 K温度范围内的感湿温度系数为RH 0.4%/℃;H2V8.5Mo3.5O32.nH2O干凝胶薄膜湿敏元件的导电机理为电子和离子导电共存,低湿时以电子导电为主,湿度增加,离子导电增强。
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| 关 键 词： | 电子技术 复合钒钼酸 干凝胶薄膜 湿敏元件 复阻抗 |
| 文章编号： | 1001-2028（2006）06-0030-03 |
Humidity Sensing Mechanism of Poly-vanadium-molybdenum Acid Xerogel Thin Film Humidity Elements |
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| LI Li,TONG Mao-song,WENG Ai-hua. Humidity Sensing Mechanism of Poly-vanadium-molybdenum Acid Xerogel Thin Film Humidity Elements[J]. Electronic Components & Materials, 2006, 25(6): 30-32 |
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| Authors: | LI Li TONG Mao-song WENG Ai-hua |
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| Abstract: | Poly-vanadium-molybdenum acid H2V8.5Mo3.5O32.nH2O xerogel thin films humidity elements were prepared by sol-gel process.There are a better linear relationship and a high sensitivity in total RH range for H2V8.5Mo3.5O32.nH2O at 1 kHz.The hysteric is RH 2.74%.The response time and the recovery time of the described materials when the humidity increases or decreases between 33% and 85% are 8 s and 20 s,respectively.The temperature errors of the humidity in the temperature range 283~303 K is RH 0.4% /℃.The total conductance of H2V8.5Mo3.5O32.nH2O consists of electronic and ionic parts,in low RH range,the conductance is determined mainly by electronic part,the ionic conductance increases with an increase of humidity. |
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| Keywords: | electronic technology poly-vanadium-molybdenum acid xerogel thin film humidity element complex impedance |
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