PHOTOACOUSTIC MEASUREMENTS ON CD1-XFEXTE COMPOUNDS

We have measured at room temperature the photoacoustic spectra of Cd1- xFexTe (0 < x < 0.055) around the CdTe fundamental absorption threshol d. We identified an absorption band at (1.38+/-0.01) eV, increasing wi th the Fe concentration, that we assigned to the (5)E-->T-3(1) transit ion within the Fe2+ (3d(6)) manifold. We observed also a broadening an d a shift to higher energies of the CdTe absorption edge for increasin g x.