Skip to main content
SpringerLink
Log in

Effects of annealing and cobalt implantation on the optical properties of βFeSi2.

  • Published:
MRS Online Proceedings Library Aims and scope

Abstract

In this paper optical absorption and photoluminescence (PL) techniques are used to study the optical properties of βFeSi2 layers fabricated by Ion Beam Synthesis (IBS). The way in which the band-gap varies when a small dose of Co is added before Fe implantation is also investigated. Our results indicate that the band-gap for βFeSi2 is direct with a value of 0.87eV. When a sufficiently high dose (1 × 1016cm−2) of Co is implanted prior to Fe we see the appearance of an additional band-gap after annealing at 1173K which we attribute to the formation of a ternary CoxFeySiz phase. We also show that by placing the sample in a hydrogen plasma it is possible to raise the temperature at which PL occurs in βFeSi2 to ~ 200K.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. K. Lefki, P. Muret, N. Cherief and R.C. Cinti. J. Appl. Phys. 69 (1991), 352.

    Article  CAS  Google Scholar 

  2. N.E. Christensen. Phys. Rev. B42 (1990), 7148.

    Article  Google Scholar 

  3. T.D. Hunt, K.J. Reeson, K.P. Homewood, Teon S.W, R.M. Gwilliam and B.J. Sealy. Presented at the E-MRS 1993 Spring Meeting, May 4–7, Strasbourg, France.

  4. D.J. Oostra, C.W.T. Bulle-Lieuwma, D.E.W. Vandenhoudt, F. Feiten and J.C. Jans. J. Appl. Phys. 74 (1993), 4347.

  5. T.D. Hunt, B.J. Sealy, J. Hanebeck, K.J. Reeson, K.P. Homewood, R.M. Gwilliam, C.D. Meekison, and G.R. Booker. The Materials Research Society Symposium Proceedings 1993 Vol 279. P 893.

    Article  CAS  Google Scholar 

  6. E. Wieser, D. Panknin, W. Skorupa and G. Querner. Nucl. Instr. Meth. B Vol 80/81 (1993), 867.

    Article  Google Scholar 

  7. J.J. Pankove, in Optical Processes in Semiconductors (Dover, New York, 1971).

    Google Scholar 

  8. D. Panknin, F. Eichorn, E. Wieser and W. Skorupa. Presented at the E-MRS 1993 Spring Meeting, May 4–7, Strasbourg, France.

  9. I. Sakata, M. Yamanaka and Y. Hayashi. J. Appl. Phys. 74 (1993), 2543.

    Article  CAS  Google Scholar 

Download references

Acknowledgments

The authors would like to thank all the staff of the D.R. Chick laboratory at the University of Surrey. We would also like to thank Professor John Shannon from Philips Research Laboratory, Redhill, Surrey,UK for the hydrogen plasma treatments. This work is support by the United Kingdom Science and Engineering Research Council (SERC).

Author information

Authors and Affiliations

  1. Department of Electronic and Electrical Engineering, University of Surrey, Guildford, Surrey, UK, GU2 5XH

    M S Finney, Z Yang, M A Harry, K J Reeson, K P Homewood, R M Gwilliam & B J Sealy

Authors
  1. M S Finney
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Z Yang
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. M A Harry
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. K J Reeson
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. K P Homewood
    View author publications

    You can also search for this author in PubMed Google Scholar

  6. R M Gwilliam
    View author publications

    You can also search for this author in PubMed Google Scholar

  7. B J Sealy
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Finney, M.S., Yang, Z., Harry, M.A. et al. Effects of annealing and cobalt implantation on the optical properties of βFeSi2.. MRS Online Proceedings Library 320, 173–178 (1993). https://doi.org/10.1557/PROC-320-173

Download citation

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1557/PROC-320-173

Search

Navigation