Improving humidity selectivity in formaldehyde gas sensing by a two-sensor array made of Ga-doped ZnO
文献类型：期刊论文
| 作者 | Han, Ning1,2; Tian, Yajun1; Wu, Xiaofeng1,2; Chen, Yunfa1
|
| 刊名 | SENSORS AND ACTUATORS B-CHEMICAL
 |
| 出版日期 | 2009-04-24 |
| 卷号 | 138期号:1页码:228-235 |
| 关键词 | Sensor array Selectivity Ga-doped ZnO Formaldehyde Relative humidity |
| ISSN号 | 0925-4005 |
| 通讯作者 | Chen, YF |
| 英文摘要 | A two-sensor array was fabricated to improve gas selectivity, an intrinsic disadvantage of mono-metal oxide semiconductor gas sensor. The sensors comprising the array were made of Ga-doped ZnO (GZO) annealed at different temperatures, and the selectivity over relative humidity (RH 0-70 +/- 10%) was greatly improved in formaldehyde gas sensing. The physical and mathematical principle for high selectivity is based on the different responses of the two sensors to analyte (formaldehyde) and to interferent (RH), that is. one sensor has larger response to formaldehyde than the other but the same response to RH. But under the same fabrication process for ZnO without Ga dopant, one sensor was insensitive either to formaldehyde or to RH due to the reaction of ZnO with the SiO(2) substrate. Consequently, such a sensor array cannot be fabricated using ZnO sensors without Ga dopant. Possible mechanism concerning interactions between GZO and the two gases (formaldehyde and water vapor) was discussed. (C) 2009 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
| 类目[WOS] | Chemistry, Analytical ; Electrochemistry ; Instruments & Instrumentation |
| 研究领域[WOS] | Chemistry ; Electrochemistry ; Instruments & Instrumentation |
| 关键词[WOS] | ZINC-OXIDE ; SENSOR ; CERAMICS ; FILMS ; WATER ; SENSITIVITY ; FABRICATION ; PARTICLES ; ETHANOL ; OXYGEN |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000265656300036 |
| 公开日期 | 2013-12-09 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/6681]  |
| 专题 | 过程工程研究所_多相复杂系统国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Han, Ning,Tian, Yajun,Wu, Xiaofeng,et al. Improving humidity selectivity in formaldehyde gas sensing by a two-sensor array made of Ga-doped ZnO[J]. SENSORS AND ACTUATORS B-CHEMICAL,2009,138(1):228-235. |
| APA | Han, Ning,Tian, Yajun,Wu, Xiaofeng,&Chen, Yunfa.(2009).Improving humidity selectivity in formaldehyde gas sensing by a two-sensor array made of Ga-doped ZnO.SENSORS AND ACTUATORS B-CHEMICAL,138(1),228-235. |
| MLA | Han, Ning,et al."Improving humidity selectivity in formaldehyde gas sensing by a two-sensor array made of Ga-doped ZnO".SENSORS AND ACTUATORS B-CHEMICAL 138.1(2009):228-235. |
入库方式： OAI收割
来源：过程工程研究所
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