Wavelength dependent effective trap density in CdTe : Evidence for the presence of two photorefractive species - Archive ouverte HAL Access content directly
Journal Articles Optics Communications Year : 1997

Wavelength dependent effective trap density in CdTe : Evidence for the presence of two photorefractive species

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Abstract

An accurate determination of the effective trap density in CdTe:V is performed using both counterpropagating (small grating spacing) and copropagating (large grating spacing) two wave mixing. This enhanced precision allows to show a variation of the effective trap density with wavelength. We show that such a change is explained when two traps both coupled to the conduction and the valence bands are present. New theoretical expressions for the electron hole competition coefficient and Debye screening length are derived and used
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Dates and versions

hal-00677567 , version 1 (08-03-2012)
hal-00677567 , version 2 (30-03-2012)

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Cite

Philippe Delaye, Louis-Anne de Montmorillon, Ivan Biaggio, Jean-Claude Launay, Gérald Roosen. Wavelength dependent effective trap density in CdTe : Evidence for the presence of two photorefractive species. Optics Communications, 1997, 134, pp.580-590. ⟨10.1016/S0030-4018(96)00516-0⟩. ⟨hal-00677567v2⟩
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