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Magnetooptical Studies of CdTe-Rich Epitaxial Layers

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Dudziak E., Bożym J., Pruchnik D., Jędral L.

Acta Physica Polonica A

1991

vol. 80

issue 3

325-328

The first magnetooptical studies comprising magnetoreflection, magnetoabsorption and Faraday rotation of CdTe-rich Hg_{1-x-y}Cd_{x}Mn_{y}Te are reported. The drastic disappearing of excitonic structure, for already very small Hg content, has been observed. The exchange parameters close to those for CdMnTe have been found.

Diffusion Length Studies in CdMnTe by the Surface Photovoltage Method

100%

Płaczek-Popko E., Szaro L., Jędral L.

Acta Physica Polonica A

1991

vol. 79

issue 2-3

187-190

The surface phototovoltage method provides a nondestructive means of measuring minority carriers diffusion length and is suitable for process control applications and for material acceptance tests. Application of the method in the case of CdMnTe compounds has been studied in the present paper. The optimum measurement conditions have been investigated by studying the dependence of measured diffusion length on the experimental conditions. As the surface photovoltage method requires the exact values of absorption coefficient as a function of wavelength, α = f(λ), the dependence has been determined. The minority carrier diffusion length for the sample investigated has been found to be equal to several tenth of μm.

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2 Acta Physica Polonica A

2 1991

2 Jędral L.

1 Bożym J.

1 Dudziak E.

1 Pruchnik D.

1 Płaczek-Popko E.

1 Szaro L.

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Magnetooptical Studies of CdTe-Rich Epitaxial Layers

Diffusion Length Studies in CdMnTe by the Surface Photovoltage Method