High-quality bulk single and polycrystals were grown by using the cold travelling heater method, and were studied by means of photoluminescence methods. Single crystals were deformed in order to create structural defects and dislocations. The photoluminescence spectra of the deformed samples exhibited the so-called Y1 and Y2 bands, and an emission at 598 to 604nm which had not been observed in non-deformed single crystals. The latter band showed variations in the intensity as a function of illumination time. The behaviour of the bands in the deep-level region indicated the existence of centres that probably produced a reduction in carrier mobility.

Photoluminescence Related to the Interaction between Carriers and Structural Defects in ZnTe Crystals J.A.Garcia, A.Remón, V.Muñoz, R.Triboulet: Japanese Journal of Applied Physics - 1, 1999, 38[9A], 5123-7