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Self-Powered Photod...
Self-Powered Photodetectors Based on Core-Shell ZnO-Co3O4 Nanowire Heterojunctions
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- Ghamgosar, Pedram, 1979- (författare)
- Luleå tekniska universitet,Materialvetenskap
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- Rigoni, Federica (författare)
- Luleå tekniska universitet,Materialvetenskap
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- Gilzad Kohan, Mojtaba (författare)
- Luleå tekniska universitet,Materialvetenskap
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visa fler...
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- You, Shujie (författare)
- Luleå tekniska universitet,Materialvetenskap
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- Morales, Edgar Abarca (författare)
- Luleå tekniska universitet
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- Mazzaro, Raffaello (författare)
- Luleå tekniska universitet,Materialvetenskap
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- Morandi, Vittorio (författare)
- Institute for Microelectronics and Microsystems Section of Bologna , National Research Council , Bologna , Italy.
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- Almqvist, Nils (författare)
- Luleå tekniska universitet,Materialvetenskap
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- Concina, Isabella (författare)
- Luleå tekniska universitet,Materialvetenskap
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- Vomiero, Alberto (författare)
- Luleå tekniska universitet,Materialvetenskap
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(creator_code:org_t)
- 2019-06-07
- 2019
- Engelska.
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Ingår i: ACS Applied Materials and Interfaces. - : American Chemical Society (ACS). - 1944-8244 .- 1944-8252. ; 11:26, s. 23454-23462
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Self-powered photodetectors operating in the UV–visible–NIR window made of environmentally friendly, earth abundant, and cheap materials are appealing systems to exploit natural solar radiation without external power sources. In this study, we propose a new p–n junction nanostructure, based on a ZnO–Co3O4 core–shell nanowire (NW) system, with a suitable electronic band structure and improved light absorption, charge transport, and charge collection, to build an efficient UV–visible–NIR p–n heterojunction photodetector. Ultrathin Co3O4 films (in the range 1–15 nm) were sputter-deposited on hydrothermally grown ZnO NW arrays. The effect of a thin layer of the Al2O3 buffer layer between ZnO and Co3O4 was investigated, which may inhibit charge recombination, boosting device performance. The photoresponse of the ZnO–Al2O3–Co3O4 system at zero bias is 6 times higher compared to that of ZnO–Co3O4. The responsivity (R) and specific detectivity (D*) of the best device were 21.80 mA W–1and 4.12 × 1012 Jones, respectively. These results suggest a novel p–n junction structure to develop all-oxide UV–vis photodetectors based on stable, nontoxic, low-cost materials.
Ämnesord
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
Nyckelord
- ZnO−CoO core−shell
- all-oxide p−n heterojunction
- nanowire geometry
- photovoltaic photodetector
- self-powered photodetector
- Experimentell fysik
- Experimental Physics
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Ghamgosar, Pedra ...
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Rigoni, Federica
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Gilzad Kohan, Mo ...
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You, Shujie
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Morales, Edgar A ...
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Mazzaro, Raffael ...
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visa fler...
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Morandi, Vittori ...
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Almqvist, Nils
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Concina, Isabell ...
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Vomiero, Alberto
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visa färre...
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- NATURVETENSKAP
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Luleå tekniska universitet