Al-Doped ZnO Nanowires by Electrochemical Deposition for Selective VOC Nanosensor and Nanophotodetector
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PAUPORTE, Thierry; LUPAN, Oleg; POSTICA, Vasilie; HOPPE, Mathias; CHOW, Lee; ADELUNG, Rainer. Al-Doped ZnO Nanowires by Electrochemical Deposition for Selective VOC Nanosensor and Nanophotodetector. In: Physica Status Solidi (A) Applications and Materials Science. 2018, nr. 16(215), p. 0. ISSN 1862-6300.
10.1002/pssa.201700824
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Physica Status Solidi (A) Applications and Materials Science
Numărul 16(215) / 2018 / ISSN 1862-6300

Al-Doped ZnO Nanowires by Electrochemical Deposition for Selective VOC Nanosensor and Nanophotodetector


DOI: 10.1002/pssa.201700824
Pag. 0-0

Pauporte Thierry1, Lupan Oleg123, Postica Vasilie3, Hoppe Mathias2, Chow Lee4, Adelung Rainer2
 
1 PSL Research University, Chimie ParisTech - CNRS, Institut de Recherche de Chimie Paris,
2 Institute for Material Science, Christian-Albrechts- University of Kiel,
3 Technical University of Moldova,
4 University of Central Florida
 
Disponibil în IBN: 4 septembrie 2018


Rezumat

Nanomaterials for new nanosensor systems with selective detection of hazardous volatile organic compounds (VOCs) vapors are of great demand nowadays. In this paper, the use in nanosensors of electrochemically deposited (ECD) Al-doped ZnO (ZnO:Al) nanowires (NWs) is reported. The NWs are characterized by micro-Raman and optical measurements. Individual ZnO and ZnO:Al NWs are integrated into nanosensor devices for room temperature UV and gas sensing. It is shown that, compared to undoped ZnO NW with irreversible response, the doped ZnO:Al NWs have faster response (≈5 s) and recovery (≈55 s), as well as enhanced UV response (≈4.8, about 2 times higher). The room temperature gas sensing investigations demonstrate that an individual ZnO:Al NW can detect volatile organic compounds (VOCs) vapors such as 2-propanol, n-butanol and ethanol at room temperature with a relatively fast response time of ≈10 s and a reversible signal (the recovery time being 30–40 s). This shows the possibility to use it with further development as indoor air quality monitor.

Cuvinte-cheie
Al-doped,

ZnO, electrochemical deposition, gas sensors, Nanosensors, nanowires