Fig. 5
Temperature-dependent PL for the 7-nm QW. The PL spectra as a function of temperature with different excitation intensity of a I 0 = 1 W/cm2, b 10 W/cm2, and c 100 W/cm2. d Change of PL peak energy as a function of temperature, e change of FWHM of PL spectra as a function of temperature, and f integrated PL intensity of PL spectra as a function of temperature