Confocal scanning laser microscopy was used for the first time to obtain the submicron-scale photoluminescence (PL) of InGaN/GaN single quantum wells (SQWs). We found island-shaped spatial inhomogeneities of both PL intensities and spectra as small as 100-200 nm. The spatial resolution of the obtained PL images was much smaller than the diffusion length of carriers in active layers at room temperature.
All Science Journal Classification (ASJC) codes
- General Engineering
- General Physics and Astronomy