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Fizika Tverdogo Tela, 2020, Volume 62, Issue 1, Page 69 (Mi ftt8519)  

Metals

Photoconductivities of nanocrystalline vanadium pentoxide thin film grown by plasma RF magnetron sputtering at the different condition of deposition

M. K. Khalafa, N. K. Hassanb, A. I. Khudiara, I. K. Salmanb

a Center of Applied Physics, Directorate of Materials Research, Ministry of Sciense and Technology, Baghdad, Iraq
b Dept. of Physics, College of Science, University of Tikrit, Baghdad, Iraq
Abstract: In this study, the fabrication and characterization of a metal–semiconductor–metal (MSM) visible photodetector based on V$_{2}$O$_{5}$ were investigated. The V$_{2}$O$_{5}$ thin film was synthesized on n-type Si (100) as substrate by plasma RF-sputtering. The photoconductivity of the nanocrystalline vanadium pentoxide (V$_{2}$O$_{5}$|Si) was investigated at the different conditions of deposition (i. e. RF-sputtering power, pressure, and substrate temperature). The photoconductivity measurement of this work was performed in the darkness and under illumination, with applied voltage from a range of 0.1–10 V and illumination intensity 9.8 mW/cm$^{2}$. I–V characteristics under illumination showed that the films prepared from V$_{2}$O$_{5}$ on the basis of n-Si have good efficiency and the best is at power 150 W, pressure 0.03 Torr, and temperature 473 K. The fabricated photoconductive detector showed the spectral response $(R_{\lambda})$ value of 0.0783 AW$^{-1}$, quantum efficiency 18.04%, spectral detectivity $D^{*}$ = 6.984 $\cdot$ 10$^{9}$ cm $\cdot$ Hz$^{1/2}$ $\cdot$ W$^{-1}$ at wavelength 600 nm, and low spectral responsivity in the UV region.
Keywords: vanadium pentoxide, photoconductivity, physical vapour deposition, plasma RF-sputtering.
Received: 29.07.2019
Revised: 05.08.2019
Accepted: 03.09.2019
English version:
Physics of the Solid State, 2020, Volume 62, Issue 1, Pages 74–82
DOI: https://doi.org/10.1134/S1063783420010175
Bibliographic databases:
Document Type: Article
Language: English
Citation: M. K. Khalaf, N. K. Hassan, A. I. Khudiar, I. K. Salman, “Photoconductivities of nanocrystalline vanadium pentoxide thin film grown by plasma RF magnetron sputtering at the different condition of deposition”, Fizika Tverdogo Tela, 62:1 (2020), 69; Phys. Solid State, 62:1 (2020), 74–82
Citation in format AMSBIB
\Bibitem{KhaHasKhu20}
\by M.~K.~Khalaf, N.~K.~Hassan, A.~I.~Khudiar, I.~K.~Salman
\paper Photoconductivities of nanocrystalline vanadium pentoxide thin film grown by plasma RF magnetron sputtering at the different condition of deposition
\jour Fizika Tverdogo Tela
\yr 2020
\vol 62
\issue 1
\pages 69
\mathnet{http://mi.mathnet.ru/ftt8519}
\elib{https://elibrary.ru/item.asp?id=42571182}
\transl
\jour Phys. Solid State
\yr 2020
\vol 62
\issue 1
\pages 74--82
\crossref{https://doi.org/10.1134/S1063783420010175}
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