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VACUUM ›› 2023, Vol. 60 ›› Issue (4): 8-12.doi: 10.13385/j.cnki.vacuum.2023.04.02

• Thin Film • Previous Articles     Next Articles

Study of the Influence of Process Parameters of Copper Coating Fabricated by Roll to Roll Machine on Electronic Property of Composite Current Collector

ZHANG Yan-peng, CAO Zhi-qiang, FU Qiang, CAO Lei, LIU Xu   

  1. Beijing NAURA Vacuum Technology Co., Ltd., Beijing 100015, China
  • Received:2022-09-29 Online:2023-07-25 Published:2023-07-26

Abstract: By controlling winding speed, cathode power, process pressure, linear ion source current, thickness of NiCr seed layer, roll to roll magnetron sputtering machine was used to deposit nano-copper film on the surface of organic film substrate, in order to improve electronic property of copper current collector. The sheet resistance of copper coating was characterized by four-probe method, and the influence of different process parameters on the sheet resistance of copper coating were obtained. The results show that with the increase of running speed of substrate, the sheet resistance increases quadratically, and with the increase of cathode power, the sheet resistance decreases in power. In the process pressure range of 0.13~0.45Pa, the sheet resistance reaches the minimum at 0.2Pa. With the ion source current increasing in the range of 0~0.7A, the sheet resistance decreases linearly. NiCr seed layer can improve the sheet resistance of copper layer, and the sheet resistance of copper coating with 6.7nm NiCr seed layer is 23.2% lower than that of copper coating without seed layer.

Key words: composite current collector, roll to roll, magnetron sputtering, copper coating, sheet resistance

CLC Number:  TB43

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