UV-illumination and Au-nanoparticles enhanced gas sensing of p-type Na-doped ZnO nanowires operating at room temperature

•High density p-type Na-doped ZnO nanowires were uniformly synthesized on glass substrate via the hydrothermal method.•The p-type characteristic of the nanowires was verified through Hall and humidity measurements.•2∼6 nm Au nanoparticles were sputtered on nanowires to fabricate a room temperature s...

Full description

Saved in:
Bibliographic Details
Published in:Sensors and actuators. B, Chemical Chemical, 2018-11, Vol.274, p.565-574
Main Authors: Hsu, Cheng-Liang, Jhang, Bo-Yu, Kao, Cheng, Hsueh, Ting-Jen
Format: Article
Language:English
Subjects:
Doped ZnO
Gas sensor
Gas sensors
Glass substrates
Gold
Humidity
Illumination
Nanoparticles
Nanowires
p-type
Room temperature
Sensitivity analysis
Studies
Temperature
Temperature sensors
UV activated
X ray photoelectron spectroscopy
Zinc oxide
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:•High density p-type Na-doped ZnO nanowires were uniformly synthesized on glass substrate via the hydrothermal method.•The p-type characteristic of the nanowires was verified through Hall and humidity measurements.•2∼6 nm Au nanoparticles were sputtered on nanowires to fabricate a room temperature sensor and strengthen p-type property.•The p-type gas sensor has a high response, sensitivity and selectivity under UV illumination at room temperature. High density p-type Na-doped ZnO nanowires were uniformly grown on glass substrate via the hydrothermal method, and then examined by SEM, XRD, PL, XPS, and TEM analysis. The p-type characteristic of the nanowires was verified through Hall and humidity measurements. 2∼6 nm Au nanoparticles were sputtered on the nanowires to fabricate a room temperature sensor and strengthen its p-type property, which was enhanced by the Schottky barrier at Au NPs/ZnO interface. The p-type gas sensor has a high response, sensitivity and selectivity under UV illumination at room temperature.
ISSN:0925-4005
1873-3077
DOI:10.1016/j.snb.2018.08.016