Designing and development of polyvinylpyrrolidone-tungsten trioxide (PVP-WO3) nanocomposite conducting film for highly sensitive, stable, and room temperature humidity sensing
| Autor: | Issam Ismail, Sajid Ullah, Abdur Rahim, Hizb Ullah Khan, Muhammad Tariq, Abdul Razaq Ahsan, Renu Pasricha, Jibran Iqbal, Mutabar Shah |
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| Rok vydání: | 2021 |
| Předmět: |
Nanocomposite
Materials science Polyvinylpyrrolidone Mechanical Engineering Capacitive sensing Sonication Humidity Condensed Matter Physics Tungsten trioxide chemistry.chemical_compound chemistry Chemical engineering Mechanics of Materials medicine General Materials Science Fourier transform infrared spectroscopy High-resolution transmission electron microscopy medicine.drug |
| Zdroj: | Materials Science in Semiconductor Processing. 134:106053 |
| ISSN: | 1369-8001 |
| DOI: | 10.1016/j.mssp.2021.106053 |
| Popis: | In the present research work, highly sensitive, stable, capacitive type humidity sensor based on polyvinylpyrrolidone and tungsten trioxide (PVP/WO3) nanocomposite was successfully developed. The sensing materials were prepared by using simple ultrasonication method and were characterized systematically through Fourier transform infrared spectroscopy, X-ray diffraction, high resolution transmission electron microscopy. Drop casting technique was used to develop sensing device using interdigitated copper electrode. Humidity sensing properties of PVP/WO3 nanocomposite sensors were investigated thoroughly and compared with pure PVP and WO3 sensors. It was observed that the humidity sensor with 20 wt% WO3 content showed high response of 44.73 nF/%RH, short response (10 s) and recovery time (15 s) as compared to pristine PVP and WO3 sensor. Low hysteresis value of 1.3 % was observed for PVP/WO3 20 wt% nanocomposite sensor along with excellent stability and repeatability. |
| Databáze: | OpenAIRE |
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