Highly sensitive and selective hydrogen single-nanowire nanosensor
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LUPAN, Oleg, CHOW, Lee, PAUPORTE, Thierry, ONO, Luis K., ROLDAN CUENYA, Beatriz, CHAI, Guangyu. Highly sensitive and selective hydrogen single-nanowire nanosensor. In: Sensors and Actuators, B: Chemical, 2006, vol. 113, pp. 772-780. ISSN -. DOI: https://doi.org/10.1016/j.snb.2012.07.111
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Sensors and Actuators, B: Chemical
Volumul 113 / 2006 / ISSN - /ISSNe 0925-4005

Highly sensitive and selective hydrogen single-nanowire nanosensor

DOI:https://doi.org/10.1016/j.snb.2012.07.111

Pag. 772-780

Lupan Oleg123, Chow Lee1, Pauporte Thierry2, Ono Luis K.1, Roldan Cuenya Beatriz1, Chai Guangyu1
 
1 University of Central Florida,
2 Laboratoire d'Electrochimie et de Chimie Analytique, UMR 7575, ENSCP-CNRS,
3 Technical University of Moldova
 
 
Disponibil în IBN: 26 iunie 2023


Rezumat

Metal oxides such as ZnO have been used as hydrogen sensors for a number of years. Through doping, the gas response of zinc oxide to hydrogen has been improved. Cadmium-doped ZnO nanowires (NWs) with high aspect ratio have been grown by electrodeposition. Single doped ZnO NWs have been isolated and contacted to form a nanodevice. Such nanosystem demonstrates an enhanced gas response and selectivity for the detection of hydrogen at room temperature compared to previously reported H 2 nanosensors based on pure single-ZnO NWs or multiple NWs. A dependence of the gas response of a single Cd-ZnO nanowire on the NW diameter and Cd content was observed. It is shown that cadmium-doping in single-crystal zinc oxide NWs can be used to optimize their response to gases without the requirement of external heaters. The sensing mechanisms responsible for such improved response to hydrogen are discussed.

Cuvinte-cheie
Cd-doped, Gas response, Hydrogen, Nanosensor, Selective, ZnO nanowire