Optical sensors based on the NiPc–CoPc composite films deposited by drop casting and under the action of centrifugal force

doi:10.1088/1674-1056/26/6/060704

中国物理B ›› 2017, Vol. 26 ›› Issue (6): 60704-060704.doi: 10.1088/1674-1056/26/6/060704

Optical sensors based on the NiPc–CoPc composite films deposited by drop casting and under the action of centrifugal force

Noshin Fatima, Muhammad M Ahmed, Khasan S Karimov, Zubair Ahmad, Fahmi Fariq Muhammad

1 Department of Electrical Engineering, Capital University of Science and Technology(CUST), Islamabad, 44000, Pakistan;
2 GIK Institute of Engineering Sciences and Technology, Topi, District Swabi, KPK 23640, Pakistan;
3 Center for Innovative Development of Science and New Technologies of Academy of Sciences, Aini 299/2, Dushanbe 734063, Tajikistan;
4 Center for Advanced Materials(CAM), Qatar University, P. O. Box 2713, Doha, Qatar;
5 Center for Composites, Institute for Vehicle Systems & Engineering, Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia;
6 Soft Materials & Devices Laboratory, Department of Physics, Faculty of Science and Health, Koya University, Danielle Mitterrand Boulevard, Koya 45, Kurdistan Region, Iraq

收稿日期:2016-10-10 修回日期:2017-03-13 出版日期:2017-06-05 发布日期:2017-06-05
通讯作者: Zubair Ahmad E-mail:zubairtarar@qu.edu.qa
基金资助:
Project supported by the Center for Advanced Materials (CAM), Qatar University, Qatar.

Optical sensors based on the NiPc–CoPc composite films deposited by drop casting and under the action of centrifugal force

Noshin Fatima¹, Muhammad M Ahmed¹, Khasan S Karimov^2,3, Zubair Ahmad⁴, Fahmi Fariq Muhammad^5,6

1 Department of Electrical Engineering, Capital University of Science and Technology(CUST), Islamabad, 44000, Pakistan;
2 GIK Institute of Engineering Sciences and Technology, Topi, District Swabi, KPK 23640, Pakistan;
3 Center for Innovative Development of Science and New Technologies of Academy of Sciences, Aini 299/2, Dushanbe 734063, Tajikistan;
4 Center for Advanced Materials(CAM), Qatar University, P. O. Box 2713, Doha, Qatar;
5 Center for Composites, Institute for Vehicle Systems & Engineering, Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia;
6 Soft Materials & Devices Laboratory, Department of Physics, Faculty of Science and Health, Koya University, Danielle Mitterrand Boulevard, Koya 45, Kurdistan Region, Iraq

Received:2016-10-10 Revised:2017-03-13 Online:2017-06-05 Published:2017-06-05
Contact: Zubair Ahmad E-mail:zubairtarar@qu.edu.qa
Supported by:
Project supported by the Center for Advanced Materials (CAM), Qatar University, Qatar.

摘要/Abstract

摘要： In this study, solution processed composite films of nickel phthalocyanine (NiPc) and cobalt phthalocyanine (CoPc) are deposited by drop casting and under centrifugal force. The films are deposited on surface-type inter-digitated silver electrodes on ceramic alumina substrates. The effects of illumination on the impedance and capacitance of the NiPc-CoPc composite samples are investigated. The samples deposited under centrifugal force show better conductivity than the samples deposited by drop casting technique. In terms of impedance and capacitance sensitivities the samples fabricated under centrifugal force are more sensitive than the drop casting samples. The values of impedance sensitivity (S_z) are equal to (-1.83) MΩ·cm²/mW and (-5.365) MΩ·cm²/mW for the samples fabricated using drop casting and under centrifugal force, respectively. Similarly, the values of capacitance sensitivity (S_c) are equal to 0.083 pF·cm²/mW and 0.185 pF·cm²/mW for the samples fabricated by drop casting and under centrifugal force. The films deposited using the different procedures could potentially be viable for different operational modes (i.e., conductive or capacitive) of the optical sensors. Both experimental and simulated results are discussed.

关键词: optical sensors, capacitive mode, impedance mode, centrifugal deposition

Abstract: In this study, solution processed composite films of nickel phthalocyanine (NiPc) and cobalt phthalocyanine (CoPc) are deposited by drop casting and under centrifugal force. The films are deposited on surface-type inter-digitated silver electrodes on ceramic alumina substrates. The effects of illumination on the impedance and capacitance of the NiPc-CoPc composite samples are investigated. The samples deposited under centrifugal force show better conductivity than the samples deposited by drop casting technique. In terms of impedance and capacitance sensitivities the samples fabricated under centrifugal force are more sensitive than the drop casting samples. The values of impedance sensitivity (S_z) are equal to (-1.83) MΩ·cm²/mW and (-5.365) MΩ·cm²/mW for the samples fabricated using drop casting and under centrifugal force, respectively. Similarly, the values of capacitance sensitivity (S_c) are equal to 0.083 pF·cm²/mW and 0.185 pF·cm²/mW for the samples fabricated by drop casting and under centrifugal force. The films deposited using the different procedures could potentially be viable for different operational modes (i.e., conductive or capacitive) of the optical sensors. Both experimental and simulated results are discussed.

Key words: optical sensors, capacitive mode, impedance mode, centrifugal deposition

中图分类号: (Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing)

07.07.Df

07.10.Pz (Instruments for strain, force, and torque) 81.05.Lg (Polymers and plastics; rubber; synthetic and natural fibers; organometallic and organic materials) 81.05.U- (Carbon/carbon-based materials)

Noshin Fatima,Muhammad M Ahmed,Khasan S Karimov,Zubair Ahmad,Fahmi Fariq Muhammad. Optical sensors based on the NiPc–CoPc composite films deposited by drop casting and under the action of centrifugal force[J]. 中国物理B, 2017, 26(6): 60704-060704.

Noshin Fatima, Muhammad M Ahmed, Khasan S Karimov, Zubair Ahmad, Fahmi Fariq Muhammad. Optical sensors based on the NiPc–CoPc composite films deposited by drop casting and under the action of centrifugal force[J]. Chin. Phys. B, 2017, 26(6): 60704-060704.

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Optical sensors based on the NiPc–CoPc composite films deposited by drop casting and under the action of centrifugal force

Optical sensors based on the NiPc–CoPc composite films deposited by drop casting and under the action of centrifugal force

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