Characteristics of ZnO MSM UV photodetector with Ni contact electrodes on poly propylene carbonate (PPC) plastic substrate

In this study, we report the fabrication of ZnO metal-semiconductor-metal UV photodetector (MSM UV PD) by deposition ZnO thin film on poly propylene carbonate (PPC) plastic substrate using direct current (DC) sputtering technique, and Nickel (Ni) contact as electrodes. The structural, optical and el...

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Bibliographic Details
Published in:Current applied physics 2010, 10(6), , pp.1452-1455
Main Authors: Jandow, N.N., Yam, F.K., Thahab, S.M., Abu Hassan, H., Ibrahim, K.
Format: Article
Language:English
Subjects:
Barrier height
Carbonates
Contact
DC sputtering
Direct current
Electrodes
Metal–semiconductor–metal (MSM) photodiodes
Nickel
Photodetectors
Propylene
Thin films
Zinc oxide
ZnO
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Summary:In this study, we report the fabrication of ZnO metal-semiconductor-metal UV photodetector (MSM UV PD) by deposition ZnO thin film on poly propylene carbonate (PPC) plastic substrate using direct current (DC) sputtering technique, and Nickel (Ni) contact as electrodes. The structural, optical and electrical properties of the ZnO thin film were investigated by using atomic force microscopy (AFM), X-Ray diffraction (XRD) measurement, and photoluminescence (PL). The electrical characteristics of the detector were investigated using the current–voltage ( I– V) measurements, the dark- and photo-currents were found to be 1.04 and 93.80 μA, respectively. Using forward dark conditions at 5 volt; the barrier height Φ B was calculated to be 0.675 eV. Under incident wavelength of 385 nm, it was found that the maximum responsivity ( R) of the Ni/ZnO/Ni MSM PD was found to be 1.59 A/W.
ISSN:1567-1739
1878-1675
DOI:10.1016/j.cap.2010.05.012