Pure high dose metal ion implantation using the plasma immersion technique

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • T. Zhang
  • B. Y. Tang
  • Z. M. Zeng
  • T. K. Kwok
  • O. R. Monteiro
  • I. G. Brown

Detail(s)

Original languageEnglish
Pages (from-to)4359-4361
Journal / PublicationReview of Scientific Instruments
Volume70
Issue number11
Publication statusPublished - Nov 1999

Abstract

High energy implantation of metal ions can be carried out using conventional ion implantation with a mass-selected ion beam in scanned-spot mode by employing a broad-beam approach such as with a vacuum arc ion source, or by utilizing plasma immersion ion implantation with a metal plasma. For many high dose applications, the use of plasma immersion techniques offers a high-rate process, but the formation of a surface film along with the subsurface implanted layer is sometimes a severe or even fatal detriment. We describe here an operating mode of the metal plasma immersion approach by which pure implantation can be obtained. We have demonstrated the technique by carrying out Ti and Ta implantations at energies of about 80 and 120 keV for Ti and Ta, respectively, and doses on the order of 1 × 1017 ions/cm2. Our experiments show that virtually pure implantation without simultaneous surface deposition can be accomplished. Using proper synchronization of the metal arc and sample voltage pulse, the applied dose that deposits as a film versus the part that is energetically implanted (the deposition-to-implantation ratio) can be precisely controlled. © 1999 American Institute of Physics.

Citation Format(s)

Pure high dose metal ion implantation using the plasma immersion technique. / Zhang, T.; Tang, B. Y.; Zeng, Z. M.; Kwok, T. K.; Chu, P. K.; Monteiro, O. R.; Brown, I. G.

In: Review of Scientific Instruments, Vol. 70, No. 11, 11.1999, p. 4359-4361.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review