Please use this identifier to cite or link to this item:
Title: Room-temperature polymer-coated supersonic cluster beam deposited ZnO film for O-2 gas and dissolved O-2 sensing
Authors: Wong, MH 
Ng, NH 
Zhao, M
Lau, KS 
Man, HC 
Cheung, JT
Ong, CW 
Keywords: Porous ZnO films
UV-assisted photocurrent
O-2 sensor
Dissolved oxygen detection
Issue Date: 2017
Publisher: Elsevier
Source: Sensors and actuators. B, Chemical, 2017, v. 251, p. 1068-1075 How to cite?
Journal: Sensors and actuators. B, Chemical 
Abstract: Room-temperature dynamic light-enhanced galvanometric response of supersonic cluster beam deposited (SCBD) zinc oxide (ZnO) films to oxygen (O-2) was investigated. The photocurrent was recorded when above-bandgap light is turned on, being maintained and turned off. Measurements were done in dry gaseous environment, and repeated in dry and wet gaseous environment after adding a water-proof superhydrophobic polymer coating on top. A dissolved oxygen sensor prototype made of a polymer coated ZnO film was fabricated to detect oxygen content in water. A model involving photo generation and recombination of electron-hole pairs, trapping and release of conduction electrons associated with sorption-desorption processes of oxygen was proposed. A practical method for determining the 02 concentration in the media based on fitting parameters to the dynamic photocurrent was tested.
ISSN: 0925-4005
EISSN: 1873-3077
DOI: 10.1016/j.snb.2017.05.173
Appears in Collections:Journal/Magazine Article

View full-text via PolyU eLinks SFX Query
Show full item record

Page view(s)

Last Week
Last month
Citations as of Dec 9, 2018

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.