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We discuss two approaches for current injected photonic crystal defect membrane emitters. A vertical pn junction using spatially selective gain is reported as well transverse pn junctions created using selective ion implantation.
The first use of lateral current injection to excite membrane photonic crystal light emitters is reported. The devices utilise a transverse diode that is created via ion implantation into a 280 nm-thick InGaAsP membrane. Photonic bandgap effects and spectral tuning of the electroluminescence spectra due to the graphene geometry photonic crystal are presented.
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