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

作     者：Noshin Fatima Muhammad M Ahmed Khasan S Karimov Zubair Ahmad Fahmi Fariq Muhammad 

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

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2017年第26卷第6期

页      面：114-118页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0704[理学-天文学] 0803[工学-光学工程] 

基　　金：supported by the Center for Advanced Materials(CAM) Qatar University Qatar 

主　　题：optical sensors capacitive mode impedance mode centrifugal deposition 

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（Sz）are equal to（-1.83） MΩ·cm^2/mW and（-5.365） MΩ·cm^2/mW for the samples fabricated using drop casting and under centrifugal force, respectively. Similarly, the values of capacitance sensitivity（Sc） are equal to 0.083 pF·cm^2/mW and 0.185 pF·cm～2/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.