Micro-photoluminescence study of nitrogen delta-doped GaAs grown by metalorganic vapor phase epitaxy
2007
Abstract We have measured micro-photoluminescence (PL) spectra of nitrogen delta ( δ )-doped GaAs with various concentrations. In nitrogen δ -doped GaAs with low concentrations, the micro-PL spectra measured at different positions were individually different. In contrast, almost the same spectra were obtained for nitrogen δ -doped GaAs with higher concentrations and uniformly nitrogen-doped GaAs. The micro-PL study shows that there are no more than a few isoelectronic traps within a diameter of ∼1 μm. This indicates a good prospect for applications of isoelectronic traps to single photon emitting devices.
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