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Capacitive and Conductometric Type Dual-Mode Relative Humidity Sensor Based on 5,10,15,20-tetra Phenyl Porphyrinato Nickel (II) (TPPNi).
Akram, Rizwan; Yaseen, Muhammad; Farooq, Zahid; Rauf, Ayesha; Almohaimeed, Ziyad M; Ikram, Muhammad; Zafar, Qayyum.
Afiliación
  • Akram R; Department of Electrical Engineering, College of Engineering, Qassim University, P.O. Box 6677, Buraydah 51452, Saudi Arabia.
  • Yaseen M; Department of Chemistry, Division of Science & Technology, University of Education Lahore, Lahore 54000, Pakistan.
  • Farooq Z; Department of Physics, Division of Science & Technology, University of Education Lahore, Lahore 54000, Pakistan.
  • Rauf A; Department of Physics, University of Management and Technology, Lahore 54000, Pakistan.
  • Almohaimeed ZM; Department of Electrical Engineering, College of Engineering, Qassim University, P.O. Box 6677, Buraydah 51452, Saudi Arabia.
  • Ikram M; Solar Cell Applications Research Lab., Department of Physics, Government College University, Lahore 54000, Pakistan.
  • Zafar Q; Department of Physics, University of Management and Technology, Lahore 54000, Pakistan.
Polymers (Basel) ; 13(19)2021 Sep 29.
Article en En | MEDLINE | ID: mdl-34641151
(1) Background: A quest for a highly sensitive and reliable humidity monitoring system for a diverse variety of applications is quite vital. Specifically, the ever-increasing demand of humidity sensors in applications ranging from agriculture to healthcare equipment (to cater the current demand of COVID-19 ventilation systems), calls for a selection of suitable humidity sensing material. (2) Methods: In the present study, the TPPNi macromolecule has been synthesized by using a microwave-assisted synthesis process. The layer structure of the fabricated humidity sensor (Al/TPPNi/Al) consists of pair of planar 120 nm thin aluminum (Al) electrodes (deposited by thermal evaporation) and ~160 nm facile spin-coated solution-processable organic TPPNi as an active layer between the ~40 µm electrode gap. (3) Results: Electrical properties (capacitance and impedance) of sensors were found to be substantially sensitive not only on relative humidity but also on the frequency of the input bias signal. The proposed sensor exhibits multimode (capacitive and conductometric) operation with significantly higher sensitivity ~146.17 pF/%RH at 500 Hz and 48.23 kΩ/%RH at 1 kHz. (4) Conclusions: The developed Al/TPPNi/Al surface type humidity sensor's much-improved detecting properties along with reasonable dynamic range and response time suggest that it could be effective for continuous humidity monitoring in multi environmental applications.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Polymers (Basel) Año: 2021 Tipo del documento: Article País de afiliación: Arabia Saudita Pais de publicación: Suiza
Texto completo
Añadir a Mi BVS
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XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Polymers (Basel) Año: 2021 Tipo del documento: Article País de afiliación: Arabia Saudita Pais de publicación: Suiza