Title of article
Hydrogen sensing by NKN thin film with high dielectric constant and ferroelectric property
Author/Authors
Nakagomi، نويسنده , , Shinji and Wingqvist، نويسنده , , Gunilla and إbom، نويسنده , , Anna Elisabeth and Helmersson، نويسنده , , Ulf and Spetz، نويسنده , , Anita Lloyd Spetz ، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2005
Pages
6
From page
490
To page
495
Abstract
Hydrogen sensing properties of sodium potassium niobate NaxKyNbOz (NKN) thin films were studied. The NKN thin films were prepared by reactive rf magnetron sputtering. NKN is a ferroelectric material with high dielectric constant. The polarization increases in hydrogen ambient and decreases in oxygen ambient. The conductivity of the NKN film in hydrogen ambient is higher than in oxygen ambient, and these changes are reversible. The threshold voltage of the current–voltage (I–V) characteristics depends on the hydrogen concentration, and a large response of 3.3 V was obtained.
Keywords
Hydrogen sensing , Ferroelectric property , NKN thin films
Journal title
Sensors and Actuators B: Chemical
Serial Year
2005
Journal title
Sensors and Actuators B: Chemical
Record number
1443351
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