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High photocurrent gain in NiO thin film/M-doped ZnO nanorods (M = Ag, Cd and Ni) heterojunction based ultraviolet photodiodes
Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, Faculty of Science & Engineering.
Sanati Hoveizeh University, Iran.
Linköping University, Department of Physics, Chemistry and Biology, Semiconductor Materials. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, Faculty of Science & Engineering.
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2016 (English)In: Journal of Luminescence, ISSN 0022-2313, E-ISSN 1872-7883, Vol. 178, 324-330 p.Article in journal (Refereed) Published
Abstract [en]

The thermal evaporation method has been used to deposit p-type NiO thin film, which was combined with hydrothermally grown n-type pure and M-doped ZnO nanorods (M=Ag, Cd and Ni) to fabricate a high performance p-n heterojunction ultraviolet photodiodes. The fabricated photodiodes show high rectification ratio and relatively low leakage current. The p-NiO/n-Zn0.94Ag0.06O heterojunction photo diode displays the highest photocurrent gain (similar to 1.52 x 10(4)), a photoresponsivity of similar to 4.48 x 10(3) AW(-1) and a photosensitivity of similar to 13.56 compared with the other fabricated photodiodes. The predominated transport mechanisms of the p-n heterojunction ultraviolet photodiodes at low and high applied forward bias may be recombination-tunneling and space charge limited current, respectively. (C) 2016 Elsevier B.V. All rights reserved.

Place, publisher, year, edition, pages
ELSEVIER SCIENCE BV , 2016. Vol. 178, 324-330 p.
Keyword [en]
ZnO nanorods; NiO thin film; Ultraviolet photodiode; Photocurrent gain
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:liu:diva-131160DOI: 10.1016/j.jlumin.2016.06.023ISI: 000381643300044OAI: oai:DiVA.org:liu-131160DiVA: diva2:972257
Note

Funding Agencies|Linkoping University

Available from: 2016-09-20 Created: 2016-09-12 Last updated: 2017-11-21

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The full text will be freely available from 2018-06-15 14:33
Available from 2018-06-15 14:33

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