Open AccessA Humidity Sensor Based on Silver Nanoparticles Thin Film Prepared by Electrostatic Spray Deposition Process
Author(s) -
Thutiyaporn Thiwawong,
Korakot Onlaor,
Benchapol Tunhoo
Publication year - 2013
Publication title -
advances in materials science and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.356
H-Index - 42
eISSN - 1687-8442
pISSN - 1687-8434
DOI - 10.1155/2013/640428
Subject(s) - materials science , thin film , scanning electron microscope , nanoparticle , deposition (geology) , silver nanoparticle , field emission microscopy , diffraction , adsorption , humidity , chemical engineering , analytical chemistry (journal) , nanotechnology , composite material , optics , chromatography , paleontology , chemistry , physics , organic chemistry , engineering , sediment , biology , thermodynamics
In this work, thin film of silver nanoparticles for humidity sensor application was deposited by electrostatic spray deposition technique. The influence of the deposition times on properties of films was studied. The crystal structures of sample films, their surface morphology, and optical properties have been investigated by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), and UV-VIS spectrophotometer, respectively. The crystalline structure of silver nanoparticles thin film was found in the orientation of (100) and (200) planes of cubic structure at diffraction angles 2θ = 38.2° and 44.3°, respectively. Moreover, the silver nanoparticles thin films humidity sensor was fabricated onto the interdigitated electrodes. The sensor exhibited the humidity adsorption and desorption properties. The sensing mechanisms of the device were also elucidated by complex impedance analysis
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