Device with Inverted Large Scale Light Extraction Structures

摘要

An interface including roughness components for improving the propagation of radiation through the interface is provided. The interface includes a first profiled surface of a first layer comprising a set of large roughness components providing a first variation of the first profiled surface having a first characteristic scale and a second profiled surface of a second layer comprising a set of small roughness components providing a second variation of the second profiled surface having a second characteristic scale. The first characteristic scale is approximately an order of magnitude larger than the second characteristic scale. The surfaces can be bonded together using a bonding material, and a filler material also can be present in the interface.

主权项

1. A device comprising:
a first at least partially transparent layer having a first profiled surface, wherein the first profiled surface comprises a set of large roughness components providing a first variation of the first profiled surface having a first characteristic scale; and a second at least partially transparent layer having a second profiled surface forming an interface with the first profiled surface, wherein the second profiled surface comprises a set of small roughness components providing a second variation of the second profiled surface having a second characteristic scale, and wherein the first characteristic scale is approximately an order of magnitude larger than the second characteristic scale.