Figure 10
Analysis of excitation intensity-dependent micro-PL data.
(a) Measured room-temperature micro-PL peak energy dependence on excitation intensity, Ipump. The arrows indicate the differing critical intensities (Ic) measured from locations 1, 2 and 4, where a strong monotonic blueshift is seen in the PL peak energies due to band filling. The inset shows similar measurements made on pure GaAs. (b) Room-temperature PL intensity, IPL, recorded from 1, 2 and 4, as a function of the pump intensity, Ipump.
