Absorption of Thin ZnSe, ZnS and ZnS_{x}Se_{1-x} Films under High Hydrostatic Pressure

• Authors: E. Griebl , G.F. Schőtz , Ch. Birzer , W. Kerner , T. Reisinger , B. Hahn , W. Gebhardt
• Languages of publication: EN

Abstracts

EN

We present absorption measurements on free-standing ZnSe, ZnS and ZnS_{x}Se_{1-x} films (d = 0.4...2 μm) under hydrostatic pressure up to 15 GPa. The refraction index n(λ,P) of ZnS and ZnSe in the transparent region up to 800 nm and the pressure shift of the E0 absorption edge of ZnSe and some ZnS_{x}Se_{1-x}-compositions was investigated at 293 K. At 2 K free exciton states near the E_{0-} and E_{0} + Δ_{0}-gap are visible in absorption. Increase in the Rydberg energy under pressure was found, which is explained with k • p-theory in the framework of the hydrogen model.

Keywords

EN

73.61.Ga; 71.35.+z

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1995
• Volume: 88
• Issue: 5
• Pages: 995-999

Dates

published

1995-11

Contributors

author

E. Griebl

• Institute of Physics, University of Regensburg, Universitätsstr. 31, 93053 Regensburg, Germany

author

G.F. Schőtz

• Institute of Physics, University of Regensburg, Universitätsstr. 31, 93053 Regensburg, Germany

author

Ch. Birzer

• Institute of Physics, University of Regensburg, Universitätsstr. 31, 93053 Regensburg, Germany

author

W. Kerner

• Institute of Physics, University of Regensburg, Universitätsstr. 31, 93053 Regensburg, Germany

author

T. Reisinger

• Institute of Physics, University of Regensburg, Universitätsstr. 31, 93053 Regensburg, Germany

author

B. Hahn

• Institute of Physics, University of Regensburg, Universitätsstr. 31, 93053 Regensburg, Germany

author

W. Gebhardt

• Institute of Physics, University of Regensburg, Universitätsstr. 31, 93053 Regensburg, Germany