The present invention relates to a LED comprising a substrate layer with a first surface and a second surface opposing the first surface and having a refractive index of n<SUB>1</SUB>, a light emitting means provided on said first surface and an array of particles arranged on said second surface, characterized by an index matching means between said particles on said second surface having a refractive index of n<SUB>2</SUB> being n2 = n<SUB>1</SUB> - 0. 5 and n<SUB>2 </SUB>= n<SUB>1</SUB> + 3 and whereby the filling height of the index matching means is lower than the maximum height of the array of particles.
