Contribution to the determination of deep trapping levels in high resistivity films of n-type CdTe

Abstract
The study of both the dark conduction and the photoconductivity of n-type CdTe films enables us to emphasize the existence of a distribution of traps located in the band gap and to determine its characteristics : density per unit energy nt # 5 × 1013 cm-3 eV -1 width ΔE = E2 — E 1 # 0.10 eV and position Ec — E 1 = 0.50 eV as well as the position of the Fermi level E c — EFo # 0.66 eV in the band gap