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  Synthesis and characterization of Cu-doped ZnO one-dimensional structures for miniaturized sensor applications with faster response

Chow, L., Lupan, O., Chai, G., Khallaf, H., Ono, L. K., Roldan Cuenya, B., et al. (2013). Synthesis and characterization of Cu-doped ZnO one-dimensional structures for miniaturized sensor applications with faster response. Sensors and Actuators A, 189, 399-408. doi:10.1016/j.sna.2012.09.006.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0006-CD06-D Version Permalink: https://hdl.handle.net/21.11116/0000-000D-479A-6
Genre: Journal Article

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 Creators:
Chow, Lee1, 2, Author
Lupan, Oleg1, 3, Author
Chai, Guangyu1, Author
Khallaf, Hani1, Author
Ono, Luis Katsuya1, Author
Roldan Cuenya, Beatriz1, 4, 5, Author           
Tiginyanu, Ion6, 7, Author
Ursaki, Veaceslav V.6, 7, Author
Sontea, Victor3, Author
Schulte, Alfons1, Author
Affiliations:
1Physics Department, University of Central Florida, ou_persistent22              
2Graduate Institute of Electro-Optical Engineering and Green Technology Research Center, Chang Gung University, Tao-Yuan, Taiwan, 333 Republic of China, ou_persistent22              
3Department of Microelectronics and Semiconductor Devices, Technical University of Moldova, 168 Stefan cel Mare Blvd., MD-2004 Chisinau, Republic of Moldova, ou_persistent22              
4Department of Civil, Environmental and Construction Engineering, University of Central Florida, USA, ou_persistent22              
5Nanoscience Technology Center, University of Central Florida, Orlando, FL, USA, ou_persistent22              
6Laboratory of Nanotechnology, Institute of Electronic Engineering and Nanotechnologies, Institute of Applied Physics of the Academy of Sciences of Moldova, MD-2028 Chisinau, Republic of Moldova, ou_persistent22              
7National Center for Materials Study and Testing, Technical University of Moldova, MD-2004 Chisinau, Republic of Moldova, ou_persistent22              

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 Abstract: 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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Language(s): eng - English
 Dates: 2012-06-032012-09-082012-09-292013-01-15
 Publication Status: Issued
 Pages: 10
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1016/j.sna.2012.09.006
 Degree: -

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Title: Sensors and Actuators A
  Other : Sens. Actuators A-Phys.
Source Genre: Journal
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Publ. Info: New York, NY : Elsevier
Pages: 10 Volume / Issue: 189 Sequence Number: - Start / End Page: 399 - 408 Identifier: ISSN: 0924-4247
CoNE: https://pure.mpg.de/cone/journals/resource/954925566722