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2 Acta Physica Polonica A

2 1992

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Infrared Absorption Study of Thermally Generated Shallow Donor Centers in Czochralski Silicon

100%

Kaczor P. , Kopalko K. , Godlewski M. , Gregorkiewicz T.

Acta Physica Polonica A

1992

tom 82

nr 4

677-680

A comparative study of thermally generated donor centers in boron and aluminum doped Czochralski silicon was performed by means of Fourier transform infrared technique. A detailed study revealed presence of donor centers belonging to the well-known series of thermal donors and shallow thermal donors. For both types of material the same centers could be observed while considerable differences in their generation kinetics occurred. In addition to the previously identified species also new ones could be observed. One of them, with single ionization level at approximately 39.5 meV, was found to exhibit clear dependence of its concentration upon illumination of the sample during cooling from room temperature to liquid He temperature.

Mechanism of Optical Detection of Magnetic Resonance in Cd_{1-x}Mn_{x}Te

75%

Godlewski M. , Surma M. , Gałązka R. , Nguyen K. , Gisbergen S. , Gregorkiewicz T. , Ammerlaan C.

Acta Physica Polonica A

1992

tom 82

nr 4

717-719

The photoluminescence and optically detected magnetic resonance studies of Cd_{1-x}Mn_{x}Te (x = 0.095) are presented. The Mn^{2+} magnetic resonance is detected optically via the changes of "edge" emission induced by the decrease of the Mn spin system magnetization.