Figure 8.

Carrier density effects on the shielded voltage. a peak-to-peak voltage versus QW thickness for doping density ND = 1018 cm−3 and various polarization strengths, as marked b Saturated peak-to-peak voltage versus doping density ND for various polarization strengths c ratio of peak voltage to the polarization potential versus QW thickness for doping density ND = 1018 cm−3

Riyopoulos Nanoscale Research Letters 2009 4:993-1003   doi:10.1007/s11671-009-9347-1