Light extraction from optically pumped light-emitting diode by thin-slab photonic crystals
- 16 August 1999
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 75 (8) , 1036-1038
- https://doi.org/10.1063/1.124588
Abstract
We describe a promising thin-slab light-emitting diode (LED) design, which uses a highly efficient coherent external scattering of trapped light by a two-dimensional (2D) photonic crystal. The light generation region was an unpatterned heterostructure surrounded by the light extraction region, a thin film patterned as a 2D photonic crystal. A six-fold photoluminescence enhancement was observed compared to an unpatterned thin film LED. That corresponded to 70% external quantum efficiency.Keywords
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