"Excitonic" and Photoionization Absorption Spectra of Iron in III-V Materials

• Authors: A. Wysmołek , R. Tryc , R. Bożek , A. Hennel
• Languages of publication: EN

Abstracts

EN

We report optical absorption measurements of Fe-doped GaAs, InP and GaP crystals obtained with the help of different doping techniques. In all these crystals photoionization spectra corresponding to Fe^{3+} → Fe^{2+} transitions with sharp "excitonic" lines were observed. The intensities of these lines are not proportional to the intensities of photoionization absorption bands, i.e. to the concentration of the Fe^{3+} centers. Variation of more than one order of magnitude was observed for different semiconductors and for different crystals of the same material. These results suggest that only some iron centers are responsible for the "excitonic" spectra.

Keywords

EN

71.55.Eq; 78.55.Cr

Discipline

• 78.55.Cr: III-V semiconductors
• 71.55.Eq: III-V semiconductors

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1992
• Volume: 82
• Issue: 5
• Pages: 911-913

Dates

published

1992-11

Contributors

author

A. Wysmołek

• Institute of Experimental Physics, Warsaw University, Hoża 69, 00-681 Warszawa, Poland

author

R. Tryc

• Institute of Experimental Physics, Warsaw University, Hoża 69, 00-681 Warszawa, Poland

author

R. Bożek

• Institute of Experimental Physics, Warsaw University, Hoża 69, 00-681 Warszawa, Poland

author

A. Hennel

• Institute of Experimental Physics, Warsaw University, Hoża 69, 00-681 Warszawa, Poland

Identifiers

DOI

10.12693/APhysPolA.82.911