期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 301, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2019.127054
关键词
Zinc oxide; Nanostructures; Gas sensor; Humidity
资金
- Spanish Ministry of Economy and Competitiveness via the Ramon y Cajal Programme
- AEI/FEDER,EU [TEC2015-74329-JIN]
- AEI/FEDER, EU [TEC2016-79898-C6-1-R]
- Czech Science Foundation (GACR) [17-16531S]
- Ministry of Education, Youth and Sports of the Czech Republic under project m-IPMinfra [CZ.02.1.01/0.0/0.0/16_013/0001823]
- CEITEC 2020 [LQ1601]
- MINECO
Gas microsensors based on zinc oxide structures with rod- and needle-like morphology, both integrated via a non-catalyzed vapor-solid mechanism enabled using aerosol-assisted chemical vapor deposition, are developed. Analyses of the films via SEM, TEM, XPS, and water contact angle indicate a higher concentration of oxygen vacancies, higher aspect ratio and higher roughness factor for the needles than for the rods. Gas sensing tests towards hydrogen and carbon monoxide demonstrate reduced humidity-interference, and higher responses to the analytes for the needle-based systems compared to the rods. These results are attributed to the morphology of the sensitive materials, which not only affects the surface-area-to-volume-ratio of the films but also their surface chemistry. These findings indicate that a thorough optimization of morphology, structure and surface properties of gas sensitive metal oxides could allow for more reliable sensor operation in humid conditions.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据