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(Color online) The schematic views for different crystal planes of , , and m-plane in wurtzite crystal structure.
(Color online) (a) Polarization ratio of the LEDs on plane GaN substrates as a function of the peak wavelength of the dominant emission component. (b) Polarization ratio of the LEDs on plane GaN substrates as a function of different current densities.
(Color online) EL spectra of LEDs at a wavelength of (a) 418 nm, (b) 519 nm, and (c) energy separation with increasing wavelength on plane devices.
(Color online) The energy separation between the top two valence bands at the Γ point for 3 nm semipolar InGaN QW strained on GaN with different In compositions obtained by the k·p method using NEXTNANO3 software. The experimental data on and are also plotted for comparison, where the In composition is determined by assuming Vegard’s law.
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