K. Tanaka et al., Observation of confined states in an In0.53Ga0.47As/In0.52Al0.48As multi-quantum wells structure by quantum confined Stark effects, SUPERLATT M, 29(2), 2001, pp. 91-98
Photocurrent spectra in an In0.53Ga0.47As/In0.52Al0.48As multi-quantum well
s structure containing 9.4 nm wide wells were measured at room temperature
in electric fields. The exciton peaks of ground-state transitions shifted f
airly in 167 kV cm(-1) as the quantum confined Stark effect. Stark shifts w
ere calculated by using the Runge-Kutta method using the effective mass equ
ation with our experimental band parameters. Our parameters are the hole ef
fective masses and valence band offset derived from saturation of a highest
eigen energy, electron effective mass depending on energies and the conduc
tion band offset derived from observed quantum number. It was possible to s
ufficiently use our experimental band parameters for the calculation of the
Stark shift in the electric field. (C) 2001 Academic Press.