Title of article
1/f noise in polyaniline/polyurethane (PANI/PU) blends
Author/Authors
Liang، نويسنده , , C. and Leroy، نويسنده , , G. and Gest، نويسنده , , J. and Vandamme، نويسنده , , L.K.J. and Wojkiewicz، نويسنده , , J.-L.، نويسنده ,
Issue Information
دوماهنامه با شماره پیاپی سال 2009
Pages
6
From page
1
To page
6
Abstract
We have investigated the electrical conductivity and the low-frequency noise of spin coated polyaniline/polyurethane (PANI/PU) films on different substrates (free, on ceramic, PVC and Teflon) and different compositions. The layer thickness is between 12 and 220 μm. The range in conductivity at room temperature is from 102 to 104 S/m and the sheet resistance is between 4 and 50 Ω. The fluctuations in the conductivity have a 1/f spectrum. The 1/f noise normalized for bias, frequency and unit area, Cus is proportional with the sheet resistance, Rsh.Our proposed model explains the proportionality Cus ∝ Rsh and the high value of the proportionality factor between Cus and Rsh. The typical elongated shape of the PANI component with a relative low number of noisy contacts between touching conducting elongated chains explains the strong noise in such materials.
Keywords
Conductivity , conducting polymer , Sheet resistance , Contact , 1/f noise
Journal title
Synthetic Metals
Serial Year
2009
Journal title
Synthetic Metals
Record number
2084715
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