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Study on the Adhesion Force Between Ga-Doped ZnO Thin Films and Polymer Substrates

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Flexible Ga doped ZnO (GZO) transparent conductive thin films were prepared on polycarbonate (PC) substrates at room temperature by magnetron sputtering. The adhesive property between the GZO film and the PC substrate was investigated quantitatively by the scratch test, which is designed for the quantitative assessment of the mechanical integrity of coated surfaces. The effect of the sputtering pressures on the adhesion forces for the GZO films was investigated. When the sputtering pressure varied from 0.2 to 0.5 Pa, no obvious adhesion force alteration was observed. However, when the sputtering pressure was increased to 0.7 Pa, the adhesion force was decreased. The lowest square resistance of the GZO film was 18.6 Ω/sq. Regardless of the sputtering pressure, the transmittance in the visible light was about 90%. When the sputtering pressure was 0.4 Pa, the optimal figure of merit (ΦTC) was 2.5×10−2 Ω−1, indicating that the optimal pressure was 0.4 Pa.
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Keywords: Adhesion Force; Flexibility; ZnO Transparent Conductive Film

Document Type: Research Article

Affiliations: 1: School of Materials Science and Engineering, Changsha University of Science and Technology, Changsha 410114, China 2: Hunan Provincial Engineering Research Center of Electric Transportation and Smart Distribution Network, Changsha University of Science and Technology, Changsha 410114, China 3: School of Metallurgy and Environment, Central South University, Changsha 410083, China

Publication date: January 1, 2019

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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