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        ITO/Au/ITO multilayer thin films on transparent polycarbonate with enhanced EMI shielding properties

        Nursev Erdogan,Fuat Erden,A. Taner Astarlioglu,Mehtap Ozdemir,Salih Ozbay,Gulnur Aygun,Lutfi Ozyuzer 한국물리학회 2020 Current Applied Physics Vol.20 No.4

        ITO/Au/ITO multilayer thin films were deposited onto polycarbonate substrate via magnetron sputtering technique without intentional heating. The deposition times of both ITO and Au layers were studied to optimize the overall transparency and conductivity. As-prepared thin films were characterized using X-ray diffraction analysis, secondary ion mass spectroscopy, scanning and transmission electron microscopy, atomic force microscopy and physical property measurement system. The optical measurement results revealed that the transmittance of the films were enhanced by increasing the gold deposition time up to 15 s. Beyond this point, further increasing the duration caused a decrease in optical transmittance. Upon optimization of the Au deposition time, the deposition duration of ITO layers was also studied to increase electromagnetic interference (EMI) shielding effectiveness (SE). Maximum EMI SE in this work was measured as 26.8 dB, yielding 99.8% power attenuation, which was verified by simulation results.

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