Abstract:We report the observations of surface light extraction enhancement from two-dimensional (2D) photonic crystal (PC) and Photonic Quasicrystal (PQC) patterns on electrical current injected GaN-based light emitters. Spatial mapping of the surface extraction was acquired by a microscopic electrical luminescence setup and a scanning near-field optical microscope (SNOM). Slight difference of mapping profile between twelve-fold PQC and regular triangular PC was obtained. It is shown that 12PQC was more efficient for … Show more
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