Structural and opto-electronic properties of electrodeposited CdTe on stainless steel foil

The electrodeposition kinetics of thin film CdTe on stainless steel substra tes was investigated. The dispersion of the refractive index is explained w ith the bound electron dispersion model. The non-dispersive dielectric cons tant and the bound electron mass were calculated. Films annealed in argon s hows a higher value for non-dispersive dielectric constant. Above 0.5 V the transport mechanism changes to space-charge limited current conduction. Th e carrier transport is mediated with a set of traps with activation energie s 0.137, 0.263 and 0.5 eV. The built-in potential of a Au-CdTe Schottky dio de was measured for different wavelengths and with different white light in tensities. The built-in potential at different wavelengths is almost consta nt in the absorption region showing the weak dependence of the built-in pot ential on minority carriers. (C) 1999 Elsevier Science B.V. All rights rese rved.