Fig xA Sample plot of
Two distinct regimes, characterized by square and linear scaling, respectively AMG837 identified. The transition occurs at a higher pumping level the stronger SRH-recombination.Figure optionsDownload full-size imageDownload as PowerPoint slide
To summarize, excitation power-dependent PL measurements can be used to detect a transition from square to linear scaling in the relation between the intensity of the luminescence emitted from the sample and the excitation power. The higher the excitation power at which this transition occurs, the stronger are the non-radiative processes.