QUANTUM-CONFINED STARK-EFFECT IN ZNSE ZN1-XCDXSE QUANTUM-WELLS/

We report the observation of the quantum-confined Stark effect (QCSE) in the photoluminescence (PL) of ZnSe/ZnCdSe single quantum wells grow n by molecular beam epitaxy. The electric field was applied via a reve rse-biased Schottky barrier contact. Red shifts of the PL peak as larg e as 13 meV were detected, and accompanied by a dramatic reduction in the transition intensity, consistent with the QCSE. Even moderate appl ied voltages (similar to 5 V) were sufficient to completely quench the luminescence signal. (C) 1995 American Institute of Physics.