材料科学
拉曼光谱
棒
兴奋剂
光致发光
X射线光电子能谱
扫描电子显微镜
光电子学
表征(材料科学)
纳米技术
衍射
选择性
分析化学(期刊)
化学工程
光学
化学
复合材料
医学
生物化学
物理
替代医学
病理
色谱法
工程类
催化作用
作者
Lee Chow,Oleg Lupan,Guangyu Chai,Hani Khallaf,Luis K. Ono,Beatriz Roldán Cuenya,I. M. Tiginyanu,V. V. Ursaki,Victor Sontea,Alfons Schulte
标识
DOI:10.1016/j.sna.2012.09.006
摘要
Detection of chemicals and biological species is an important issue to human health and safety. In this paper, we report the hydrothermal synthesis at 95 °C of Cu-doped ZnO low-dimensional rods for room-temperature (RT) sensing applications and enhanced sensor performances. X-ray diffraction, scanning electron microscopy, X-ray photoelectron spectroscopy, Raman and photoluminescence are used to characterize the material properties. To demonstrate the suitability of the Cu-doped ZnO rods for gas sensor applications and for comparison with pure ZnO, we fabricated a double rod device using Focused Ion Beam. The responses of pure-ZnO and Cu-doped ZnO rods studied in exactly the same condition are reported. We found that Cu-ZnO sensors have enhanced RT sensitivity, faster response time, and good selectivity. Miniaturized Cu-ZnO rod-based sensors can serve as a good candidate for effective H2 detectors with low power consumption.
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