Notation is that of isotropic H atom in low field limit. Only one of the two possible circular polarizations is detected in these spectra. Figure 3 Excitonic PL spectra of the Epitronics HVPE-1 sample as a function of temperature. Figure 4 Excitonic 1.7 K PL spectra of four Epitronics HVPE samples with various Si doping levels.
Times refer to periods of continuous laser illumination.