THE SENSING OF HUMIDITY BY SURFACE-TYPEAg/FORMYL-TIPPCu(II)/AgSENSOR FOR ENVIRONMENTAL MONITORING

Dil Nawaz Khan (), Muhammad Hassan Sayyad, Muhammad Tahir, Fazal Wahab, Muhammad Yaseen, Mukhtar Ali and Munawar Ali Munawar
Additional contact information
Dil Nawaz Khan: Faculty of Engineering Sciences, Ghulam Ishaq Khan Institute of Engineering Sciences and Technology, Topi, 23640 KPK, Pakistan;
Muhammad Hassan Sayyad: Faculty of Engineering Sciences, Ghulam Ishaq Khan Institute of Engineering Sciences and Technology, Topi, 23640 KPK, Pakistan
Muhammad Tahir: Faculty of Engineering Sciences, Ghulam Ishaq Khan Institute of Engineering Sciences and Technology, Topi, 23640 KPK, Pakistan;
Fazal Wahab: Faculty of Engineering Sciences, Ghulam Ishaq Khan Institute of Engineering Sciences and Technology, Topi, 23640 KPK, Pakistan
Muhammad Yaseen: Punjab Forensic Science Agency, Lahore, Pakistan
Mukhtar Ali: Government College of Science, Lahore, Pakistan
Munawar Ali Munawar: Institute of Chemistry, University of Punjab, Lahore, Pakistan

Surface Review and Letters (SRL), 2014, vol. 21, issue 04, 1-7

Abstract: In this paper, we have studied the effects of changing relative humidity on the electrical parameters and their multi frequency response of the surface typeAg/formyl-TIPPCu(II)/Aghumidity sensors. The silver electrodes of thickness 100 nm were primarily deposited on cleaned glass substrates by thermal evaporator. A gap of 40 μm was created between the electrodes of each device by using mask during the evaporation process. Thin films of formyl-TIPPCu(II)of 140 nm thickness were grown on silver electrodes by thermal sublimation technique. The values of capacitance and resistance of the sensors were found at different humidity levels at frequency of 1, 10 and 100 kHz of AC input signal. A remarkable increase in capacitance and decrease in resistance were observed during the rise of relative humidity from 45% to 95% RH. The hysteresis response of these humidity sensors was also studied at 1 kHz AC signal.

Keywords: Humidity sensor; organic semiconductors (search for similar items in EconPapers)
Date: 2014
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.worldscientific.com/doi/abs/10.1142/S0218625X14500486
Access to full text is restricted to subscribers

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:wsi:srlxxx:v:21:y:2014:i:04:n:s0218625x14500486

Ordering information: This journal article can be ordered from

DOI: 10.1142/S0218625X14500486

Access Statistics for this article

Surface Review and Letters (SRL) is currently edited by S Y Tong

More articles in Surface Review and Letters (SRL) from World Scientific Publishing Co. Pte. Ltd.
Bibliographic data for series maintained by Tai Tone Lim ().