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(a) Schematic of the embedded PhC LED supporting following three different families of modes: low order, high order, and CLMs. (b) Simulated extraction length of the CLM as a function of the cap-layer and embedded PhC thicknesses for 35% PhC fill factor, -thick GaN layer and . (c) Cross-sectional SEM image of the embedded air-gap PhC LED.
(a) Low resolution angle-resolved EL measurement, where , showing the diffraction of the guided modes by the embedded PhCs. (b) High-resolution angle-resolved measurement revealing the presence of many more diffracted modes.
(a) Vertically emitted output power versus current for the embedded PhC LEDs and non-PhC LED. The dotted curves represent the extreme behaving and the solid line the average behaving devices. (b) I-V characteristics of the embedded PhC and non-PhC LEDs. (c) EQE and total output power vs current of the unencapsulated embedded PhC and encapsulated embedded PhC LEDs.
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