Electroless Plated Pd/GaAs Schottky Diode and its Application to Hydrogen Detection
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Published:2007-06
Issue:
Volume:124-126
Page:81-84
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ISSN:1662-9779
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Container-title:Solid State Phenomena
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language:
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Short-container-title:SSP
Author:
Chou Yen I1,
Chen Huey Ing2,
Hsiung Chien Kang2
Affiliation:
1. Industrial Technology Research Institute
2. National Cheng Kung University
Abstract
In this study, the dependence of Pd/GaAs Schottky diode on the electroless plating (EP)
variable is systematically studied. Both alkaline and acidic formulas for electroless Pd depositions are
employed for investigations. The correlation between Pd gain size and the manipulation of plating
bath composition is constructed. Experimental results show that the performances of Pd/GaAs
Schottky diode, electric rectification and hydrogen detection, are largely governed by the Pd grain size.
Furthermore, without the interference of sodium ion, the acidic-plated Pd/GaAs diode with
intermediate oxide layer exhibits the excellent hydrogen sensing performances from 15 ppm to 1.0 %
H2/air.
Publisher
Trans Tech Publications, Ltd.
Subject
Condensed Matter Physics,General Materials Science,Atomic and Molecular Physics, and Optics