STARK-EFFECT ON ABSORPTION OF CDZNSSE-ZNSSE QUANTUM-WELLS

We present the measurements of room-temperature electroabsorption in C dZnSSe-ZnSSe semiconductor quantum wells that exhibit prominent excito nic absorption peaks in the wavelength region around 500 nm, The elect roabsorption of these wide-band-gap quantum wells primarily stems from ionization of the room temperature excitons, Despite the large excito n Linewidths in these structures, the magnitudes of field-induced abso rption changes and absorption contrasts are sufficient for pragmatic a pplications in optical information processing systems in the blue-gree n spectral range.