Electrical and Electronic Engineering
p-ISSN: 2162-9455 e-ISSN: 2162-8459
2015; 5(1A): 19-22
doi:10.5923/c.eee.201501.04
Q. Humayun1, U. Hashim2, C. M. Ruzaidi1, Kai Loong Foo2
1Department of Electronics Faculty of Engineering Technology, Universiti Malaysia Perlis (UniMAP), D/A Pejabat Pos Besar Kangar, Perlis, Malaysia
2Nano Biochip Research Group, Institute of Nano Electronic Engineering (INEE), Universiti Malaysia Perlis (UniMAP), Kangar, Perlis, Malaysia
Correspondence to: Q. Humayun, Department of Electronics Faculty of Engineering Technology, Universiti Malaysia Perlis (UniMAP), D/A Pejabat Pos Besar Kangar, Perlis, Malaysia.
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The larger surface-area-to-volume ratio compared with their bulk counterpart, Nanomaterials based electronic devices are the subject of keen interest, probably because of cost effective nature and fast sensing capabilities. Moreover the control morphology at specific area of electrodes is a challenging task. Therefore in the current research article the ZnO thin film and ZnO nanorods were selectively deposited by low cost sol-gel and hydrothermal growth process at the selective area of microgap electrodes spacing and further electrically tested for ultraviolet (UV) sensing application. On exposure to ultraviolet (UV) light the current gains, response/recovery times, repeatability, of the fabricated sensors displayed the promising application for UV light detection. The surface morphologies structural, optical and electrical properties of the as synthesized nanostructures ZnO were characterized using SEM, XRD, and source meter respectively.
Keywords: Micro-Gap, Sol gel, Hydrothermal, ZnO thin film, ZnO Nanorods, Ultraviolet light (UV)
Cite this paper: Q. Humayun, U. Hashim, C. M. Ruzaidi, Kai Loong Foo, ZnO Nanostructure Decorated Microgap Electordes UV Sensor, Electrical and Electronic Engineering, Vol. 5 No. 1A, 2015, pp. 19-22. doi: 10.5923/c.eee.201501.04.
Figure 1. (a) Microgap electrode design specification (b) Microgap electrode AutoCAD mask (c) Design on chrome glass mask |
(1) |
Figure 2. (a) Schematic of ZnO thin film and (b) ZnO nanorods deposition process at the selective area of microgap electrodes |
Figure 3. (a) XRD spectra of deposited ZnO thin film and (b) for ZnO nanorods |
(2) |
(3) |
Figure 4. (a) Original sample. The deposited ZnO thin film and ZnO nanorods at the selected area of microgap electrodes can be seen in (a) and (b) |
Figure 5. Current to time (i-t) response curves under ultraviolet (UV) On/off states |