| Autor: |
Pandit, Vishal K., Nikale, Vasant M., Thube, Sanjay G., Soudagar, Nafeesa M., Joshi, Sneha S. |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2024, Vol. 3139 Issue 1, p1-7, 7p |
| Abstrakt: |
The effect of surfactant on the sensitivity of polymer-based heterojunction has been studied at room temperature. To fabricate heterojunction,polypyrrole (thickness∼3.8 µm) were deposited by galvanostatic electrodeposition on stainless steel substrate (SS). An electrochemical bath contains pyrrole monomer with surfactant like Triton-X 100 (TX-100) and having fixed concentration 0.001M. In order to make heterojunction polyaniline films has been deposited using layer by layer chemical oxidation process on the pre-deposited polypyrrole films. Layer by layer process was used to attain maximum thickness 0.72 µm of polyaniline films. Individual structural, optical, electrical, surface morphological properties was studied by X-Ray Diffraction, FTIR, UV-Visible spectroscopy, Electrical conductivity, FE-SEM, and Contact angle measurementfor Polypyrrole (with and without surfactant) and polyanilinefilms of maximum thickness. Fabricate heterojunction and named it as PANI/PPy-NS, PANI/PPy-TX. It was used to study sensing performance LPG at ambient conditions. Different concentration of LPG is passing in the chamber and measured Current (I)-Voltage (V) characteristics at room temperature. Sensitivity (%) of heterojunction sensor is studying in air and LPG environment. A response and recovery time is measured for maximum sensitive heterojunction i.e.PANI/PPy-TX. The average maximum sensitivity is about<43% for 1040 ppm concentration of LPG. 80 sec and 500sec time is for response and recovery respectively. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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