Patent ID: 9139902
Filing Date: 2015-09-22
Classification: C23C,H01J

Abstract:
1. An apparatus for plasma ion implantation of a solid element comprising a vacuum chamber maintaining a vacuum state inside; a magnetron sputtering source installed inside the vacuum chamber; a sample stage installed opposite to the magnetron sputtering source in the vacuum chamber to mount a sample; a first power supply generating a pulse DC power and applying the pulse DC power to the magnetron sputtering source so as to generate pulsed plasma ions of a solid element sputtered from the magnetron sputtering source; and a second power supply generating a negative voltage pulse and supplying the negative voltage pulse to the sample stage to accelerate the pulsed plasma ions of a solid element from the magnetron sputtering source to the sample, wherein the negative voltage pulse has a same frequency as the pulse DC power and is synchronized to the pulse DC power, wherein both the negative voltage pulse and the pulse DC power have on time periods and off time periods and the on time periods of the negative voltage pulse are within the on time periods of the pulse DC power, wherein the negative voltage pulse to the sample stage has a same frequency of 1 Hz to 10 kHz as that of the pulse DC power, and wherein the negative voltage pulse has a pulse width of 1 μsec to 200 μsec and a pulse high voltage of −1 kV to −100 kV.