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(a) Schematics of white LED, (b) top-view SEM image of the LED structure, and (c) microfacet structures composed of -plane (0001) and semipolar and facets.
Room temperature PL and microscopic-PL spectra of MQWs grown on microfacet structures. (a) PL spectrum of MQWs grown on trapezoidal GaN arrays. Microscopic-PL spectra of (b) top facet, (c) trapezoidal structure which was composed of -plane (0001) top facet and semipolar side facets, and (d) trapezoidal structure which was composed of -plane (0001) top facets and semipolar side facets.
characteristics of the white LED.
EL spectra of white LED with increasing injection current at room temperature.
(a) The integrated EL intensity and (b) the ratio of integrated EL intensity of MQWs grown on -plane (0001) and semipolar microfacets with increasing injection current. The background color is the same as the EL emission color.
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