Fig. 2
From: Strain-Controlled Recombination in InGaN/GaN Multiple Quantum Wells on Silicon Substrates
Overview of SSPL for S1–S4 excited by 377 nm laser at 10 K. The original PL signals contain Fabry-Perot oscillation which is shown as the black curve in the insert (S1 as an example). The oscillation item (red dash curve) and Gaussian PL peak (blue curve) are split by fitting the original signals. All PL data for S1–S4 are treated by the same method, and then, the split Gaussian PL are shown in the figure