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(a) Room temperature PL spectra of LED A and LED B (inset: high resolution x-ray diffraction scans for the GaN (0002) reflection of LED A and LED B), (b) PL spectra of LED A before and after RTA, (c) PL spectra of LED B before and after RTA.
Integrated PL intensities as a function of for LED A and LED B.
AFM images of surface morphologies of (a) LED A and (b) LED B.
(a) curve of LED A and LED B, (b) light output power of LED A and LED B as a function of current.
Energy band diagrams of well and barrier layer of LED A and LED B at 4 V, (a) valence band and (b) conduction band. Carrier concentration throughout MQW at 4 V, (c) LED A and (d) LED B.
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