Electrical Characterization of CdS Nanoparticles for Humidity Sensing Applications

Resistive type relative humidity sensors based on CdS nanoparticles were synthesized using the chemical bath deposition (CBD) method. Using the drop-casting method, CdS nanoparticles were deposited between thermally evaporated gold electrodes separated by 17 μm with the electrodes having channel wid...

Full description

Saved in:
Bibliographic Details
Published in:Industrial & engineering chemistry research 2012-02, Vol.51 (8), p.3309-3313
Main Authors: Demir, Ramazan, Okur, Salih, Şeker, Mavişe
Format: Article
Language:English
Subjects:
Applied sciences
Cadmium sulfides
Chemical engineering
Deposition
Detection
Electrodes
Exact sciences and technology
Humidity
Nanoparticles
Relative humidity
Sensors
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:Resistive type relative humidity sensors based on CdS nanoparticles were synthesized using the chemical bath deposition (CBD) method. Using the drop-casting method, CdS nanoparticles were deposited between thermally evaporated gold electrodes separated by 17 μm with the electrodes having channel widths of 1400 μm and supported on a glass substrate with a thickness of 120 nm. The CdS nanoparticles were exposed to moisture to measure the change in electrical resistance. The resistance of the CdS sensor element changed by 3 orders of magnitude as the relative humidity of the test cell was varied between 17 and 85%. The experimental results demonstrate that CdS nanoparticles are very sensitive to changes in relative humidity and can be used as a sensing element for CdS-based humidity sensor applications.
ISSN:0888-5885
1520-5045
DOI:10.1021/ie201509a