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Effect of humidity on copper phthalocyanine films deposited at different gravity conditions

Khasan S. Karimov (Centre for Innovative Development of Science and Technologies of Academy of Sciences, Dushanbe, Tajikistan and GIK Institute of Engineering Sciences and Technology, Topi, Pakistan)
Zubair Ahmad (Department of Electrical Engineering, College of Engineering, Qatar University, Doha, Qatar)
Noshin Fatima (Department of Electrical Engineering, Capital University of Science and Technology (CUST), Islamabad, Pakistan)
Muhammad Mansoor Ahmed (Department of Electrical Engineering, Capital University of Science and Technology (CUST), Islamabad, Pakistan)
Muhammad Abid (Interdisciplinary Research Center, COMSATS Institute of Information Technology, Wah Cantt, Pakistan)

Pigment & Resin Technology

ISSN: 0369-9420

Article publication date: 3 January 2017

Abstract

Purpose

The paper aims to study the effects of humidity on the electrical properties of copper phthalocyanine (CuPc) thin films deposited at different gravity conditions.

Design/methodology/approach

Surface-type samples were fabricated on glass substrates with preliminary-deposited copper electrodes. The CuPc solution was prepared in benzene. The thin films of CuPc were deposited on these substrates at diverse gravity conditions by drop-casting and centrifugation at 1 × g and 70 × g, respectively. Impedance and capacitance of the fabricated devices were measured against the different relative humidity ranging from 32 to 98 per cent.

Findings

The impedance and the capacitance of the CuPc film were found to be dependent on the ambient humidity levels (32-98 per cent) and the gravity conditions (1 × g and 70 × g) opted during the fabrication process.

Research limitations/implications

The centrifugation technique can potentially be used in the instrumentation industry for the fabrication of humidity sensors.

Practical implications

The results of the investigations can potentially be used in the instrumentation and optoelectronics industry for the fabrication of humidity sensors.

Originality/value

CuPc films were deposited from a solution in benzene using drop-casting and centrifugation. The electrical properties of the films were found to be dependent on film fabrication conditions and ambient humidity levels. Growth-dependent electrical properties of the CuPc films can be explained by considering their structure.

Keywords

Acknowledgements

The authors are thankful to Capital University of Science and Technology (CUST) and Ghulam Ishaq Khan Institute of Engineering Sciences and Technology, Pakistan, for supporting this work.

Citation

Karimov, K.S., Ahmad, Z., Fatima, N., Ahmed, M.M. and Abid, M. (2017), "Effect of humidity on copper phthalocyanine films deposited at different gravity conditions", Pigment & Resin Technology, Vol. 46 No. 1, pp. 64-70. https://doi.org/10.1108/PRT-11-2014-0105

Publisher

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Emerald Publishing Limited

Copyright © 2017, Emerald Publishing Limited