TIME-RESOLVED PHOTOLUMINESCENCE SPECTRA OF (AlxGa1−x)0.51In0.49P (x = 0.29) ALLOY

Measurements of time-resolved photoluminescence (TRPL) spectra were made in a study of the optical properties of partially ordered quaternary (AlxGa1−x)0.51In0.49P (x = 0.29) alloy. Both excitation-wavelength dependence of lifetime and excitation-intensity dependence of lifetime show a wide distribution of carriers. In TRPL spectra measured at 300 K, a blue-shift of photoluminescence (PL) peaks in (AlxGa1−x)0.51In0.49P is observed. The phenomenon is in agreement with the Z-shaped temperature-dependence of the PL peak. Possible origins of the blue-shift and Z-shaped behaviour of PL peak are presented