David, AurelienFujii, TetsuoMatioli, ElisonSharma, RajatNakamura, ShujiDenbaars, Steven P.Welsbuch, ClaudeBenisty, Henri2016-03-172016-03-172016-03-17200610.1117/12.648218https://infoscience.epfl.ch/handle/20.500.14299/125028We study photonic crystal (PhC)-assisted light extraction from gallium nitride (GaN) light-emitting diodes (LEDs). We focus on the issue of omnidirectional extraction, and we introduce a complex crystal lattice, namely the Archimedean tiling, which enables efficient and omnidirectional light extraction. PhC LEDs with regular triangular lattices and Archimedean lattices are studied experimentally by angle-resolved luminescence, and the theoretical properties of the Archimedean tiling are confirmed experimentally.text::conference output::conference proceedings::conference paper