Nickel Films For Flexible And Transparent Electrodes In Potential Flexible Applications
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Date
2017
Department
Physics
Program
Master of Science
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This item is made available by Morgan State University for personal, educational, and research purposes in accordance with Title 17 of the U.S. Copyright Law. Other uses may require permission from the copyright owner.
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Abstract
Transparent highly flexible electronics are highly demanded for modern technology applications such as solar cells, lightning displays, and wearable requirements. In this project, nickel based flexible and transparent electrodes (FTEs) were investigated. The continuous, holey, and lacey nickel electrodes were fabricated as nickel films from a polycrystalline target and various polyimide substrates using DC sputtering. The electrical resistance and resistance ratio (R/R0) of the prepared nickel electrodes were characterized under various experimental conditions, such as bending, stretching and twisting. Their physical properties were also characterized with X-ray diffraction, scanning electron microscopy, transmission electron microscopy, atomic force microscopy, and vibrating-sample magnetometer. microscopy, and vibrating-sample magnetometer. It was found that the electrical resistance increases in either quadratic (second order polynomial) or exponential trend in the three types of electrodes under bending. During stretching, the resistance increases polynomially, exponentially or linearly with strain rate. The same electrical behavior was observed under twisting. These fabricated nickel films are magnetic and can be used for several FTE applications in the future.