LED LIGHT EXTRACTION ENHANCEMENT ENABLED USING SELF-ASSEMBLED PARTICLES PATTERNED SURFACE

摘要

A light emitting diode (LED) containing device including a light emitting diode (LED) structure, and a light transmissive substrate in contact with the LED structure. The light transmissive substrate has a texture surface tuned to include features with dimensions greater than a wavelength of light produced by the LED structure. In some embodiments, increasing the feature size of the texture to be comparable to the wavelength of light produced by the LED increases light extraction from the LED in comparison to when the feature size of the texture is substantially less or substantially larger than the wavelength of light.

主权项

1. A method for fabricating a light emitting device comprising:
providing a light emitting diode (LED) structure that is present on a light transmissive substrate; forming a metal containing layer on a surface of the light transmissive substrate; annealing the metal containing layer to provide a plurality of metal particles; etching exposed portions of the light transmissive substrate using the plurality of metal particles as an etch mask to form a textured surface having a plurality of features that are comparable in dimension to a wavelength of light produced by the LED structure; and removing the plurality of metal particles.