The effect of the Cu dopant on the ultraviolet photodetector based on ZnO nanorods
In this work, a (ZnO)/(Cu-doped ZnO) core/shell nanorods array was fabricated by a two-step method: ZnO hydrothermal synthesis followed by encapsulation via a dip-coating process. The effects of the Cu dopant concentration on the structural, electrical and optical properties of the nanorods were stu...
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Isfahan University of Technology
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doaj-9ec9a8713ca344058083b9cb0f49bc422020-11-25T02:16:05ZengIsfahan University of TechnologyIranian Journal of Physics Research1682-69572345-36642019-12-01193571580The effect of the Cu dopant on the ultraviolet photodetector based on ZnO nanorodsA khayatian0M Almasi Kashi1R Azimirad2R shakernejad3S Safa4 Department of Physics, University of Kashan, Kashan, Iran Department of Physics, University of Kashan, Kashan, Iran Malek Ashtar University of technology, Tehran, Iran Department of Physics, University of Kashan, Kashan, Iran Malek Ashtar University of technology, Tehran, Iran In this work, a (ZnO)/(Cu-doped ZnO) core/shell nanorods array was fabricated by a two-step method: ZnO hydrothermal synthesis followed by encapsulation via a dip-coating process. The effects of the Cu dopant concentration on the structural, electrical and optical properties of the nanorods were studied. The SEM images showed that the encapsulation increased the nanorods average diameter from ~40 to ~60 nm. All ZnO core/shell nanorods showed a hexagonal wurtzite structure with no trace of a Cu oxide phase. A peak shift was observed in the XRD pattern, indicating the better Cu+ substitution into the Zn sites. The I–V measurements also showed that Cu doping up to 4.5 at.% decreased the samples resistance, which could be attributed to the +1 valance state of the Cu ions. It was also found that Cu doping increased the UV photoresponsivity of the photodetectors made by Cu:ZnO.http://ijpr.iut.ac.ir/article-1-2833-en.htmlcore/shell nanorodsznocu dopantuv photodetector |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
A khayatian M Almasi Kashi R Azimirad R shakernejad S Safa |
spellingShingle |
A khayatian M Almasi Kashi R Azimirad R shakernejad S Safa The effect of the Cu dopant on the ultraviolet photodetector based on ZnO nanorods Iranian Journal of Physics Research core/shell nanorods zno cu dopant uv photodetector |
author_facet |
A khayatian M Almasi Kashi R Azimirad R shakernejad S Safa |
author_sort |
A khayatian |
title |
The effect of the Cu dopant on the ultraviolet photodetector based on ZnO nanorods |
title_short |
The effect of the Cu dopant on the ultraviolet photodetector based on ZnO nanorods |
title_full |
The effect of the Cu dopant on the ultraviolet photodetector based on ZnO nanorods |
title_fullStr |
The effect of the Cu dopant on the ultraviolet photodetector based on ZnO nanorods |
title_full_unstemmed |
The effect of the Cu dopant on the ultraviolet photodetector based on ZnO nanorods |
title_sort |
effect of the cu dopant on the ultraviolet photodetector based on zno nanorods |
publisher |
Isfahan University of Technology |
series |
Iranian Journal of Physics Research |
issn |
1682-6957 2345-3664 |
publishDate |
2019-12-01 |
description |
In this work, a (ZnO)/(Cu-doped ZnO) core/shell nanorods array was fabricated by a two-step method: ZnO hydrothermal synthesis followed by encapsulation via a dip-coating process. The effects of the Cu dopant concentration on the structural, electrical and optical properties of the nanorods were studied. The SEM images showed that the encapsulation increased the nanorods average diameter from ~40 to ~60 nm. All ZnO core/shell nanorods showed a hexagonal wurtzite structure with no trace of a Cu oxide phase. A peak shift was observed in the XRD pattern, indicating the better Cu+ substitution into the Zn sites. The I–V measurements also showed that Cu doping up to 4.5 at.% decreased the samples resistance, which could be attributed to the +1 valance state of the Cu ions. It was also found that Cu doping increased the UV photoresponsivity of the photodetectors made by Cu:ZnO. |
topic |
core/shell nanorods zno cu dopant uv photodetector |
url |
http://ijpr.iut.ac.ir/article-1-2833-en.html |
work_keys_str_mv |
AT akhayatian theeffectofthecudopantontheultravioletphotodetectorbasedonznonanorods AT malmasikashi theeffectofthecudopantontheultravioletphotodetectorbasedonznonanorods AT razimirad theeffectofthecudopantontheultravioletphotodetectorbasedonznonanorods AT rshakernejad theeffectofthecudopantontheultravioletphotodetectorbasedonznonanorods AT ssafa theeffectofthecudopantontheultravioletphotodetectorbasedonznonanorods AT akhayatian effectofthecudopantontheultravioletphotodetectorbasedonznonanorods AT malmasikashi effectofthecudopantontheultravioletphotodetectorbasedonznonanorods AT razimirad effectofthecudopantontheultravioletphotodetectorbasedonznonanorods AT rshakernejad effectofthecudopantontheultravioletphotodetectorbasedonznonanorods AT ssafa effectofthecudopantontheultravioletphotodetectorbasedonznonanorods |
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1724892916549156864 |