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Imperfection photoconductivity peak related to the Urbach's absorption edge in Cd1−xMnxTe and CdTe

A.J. Szadkowski - No affiliation found

1986/06/01 Full-length article DOI: 10.1016/0038-1098(86)90232-2 Journal: Solid State Communications

Abstract:

AbstractThe narrow photoconductivity (PC) peak observed as the main feature of the PC spectrum in many Cd1−xMnxTe and CdTe crystals is ascribed to the transitions between ionized shallow hydrogen-like acceptors and the conduction band. The shape and the position of this large extrinsic PC peak is determined by a steep Urbach's edge of the intrinsic absorption which plays a parasitic role.