Skip to main content
SpringerLink
Log in

Optical absorption edge of Tl3VS4 and Tl3TaS4

  • Published:
Czechoslovak Journal of Physics B Aims and scope

Conclusion

The materials studied have their absorption edges in the visible region. The substitution of vanadium for tantalum leads to the shift of the absorption edge towards lower energies. With decreasing temperature, the absorption edge is shifted towards higher energies.

Spectral dependence of the absorption edge can be, at higher values of the absorption coefficient (K > 101cm−1), approximated by an exponential function. The absorption edge of Tl3TaS4 in the temperature interval studied can be described with the help of the Urbach rule. In the case of Tl3VS4 the absorption edge is distorted due to impurities present.

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. Čermák K.: Čs. Čas. Fyz. A18 (1968) 436.

    Google Scholar 

  2. Čermák K.: Čs. Čas. Fyz. A19 (1969) 149.

    Google Scholar 

  3. Čermák K.: Collection Czechoslovak Chem. Commun.34 (1969) 3605.

    Google Scholar 

  4. Belyaev B. V.: Fiz. tekh. poluprovodn.1 (1975) 133.

    Google Scholar 

  5. Isaacs T. J., Weinert R. W.: J. Electron. Mater.5 (1976) 13.

    Google Scholar 

  6. Čermák K.: Jemná mechanika a optika6 (1968) 204.

    Google Scholar 

  7. Fan H. Y., Becker H.: Semiconducting Materials. Butherworths, London, 1957, p. 132.

Download references

Author information

Authors and Affiliations

  1. Department of Physics, Institute of Chemical Technology, Leninovo nám. 565, 532 10, Pardubice, Czechoslovakia

    K. Čermák

Authors
  1. K. Čermák
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

The autor would like to thank Dr. Milena Závětová, CSc. for valuable comments on the manuscript.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Čermák, K. Optical absorption edge of Tl3VS4 and Tl3TaS4 . Czech J Phys 34, 88–93 (1984). https://doi.org/10.1007/BF01590484

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF01590484

Keywords

Search

Navigation