Organic light-emitting device with nano-structured light extraction layer and method of manufacturing the same

摘要

An organic light-emitting device is provided comprising a stack of layers including —an electro-optical layer structure (10) having a light emissive surface (12), —a light extraction structure (20) adjacent the light emissive surface, the light extraction structure has a nanostructured layer (22); and a backfill layer (24) comprising a material having a second index of refraction different from the first index of refraction, wherein the backfill layer (24) forms a planarizing layer over the nanostructured layer (22). The light emitting device includes a barrier film that comprises a first and a second inorganic layer (22, 26) and an organic layer (24) arranged between said inorganic layers. The one (22) of the inorganic layers of the barrier film closest to the electro-optical layer structure forms the nanostructured layer and the organic layer (24) between the inorganic layers forms the backfill layer.

主权项

1. Method for manufacturing an organic light-emitting device, said method comprising the steps of forming a stack of layers by
providing a temporary substrate (TS) having a main surface, providing a nanopatterned structure at said main surface, applying with a conformal deposition method a layer (22) of a first inorganic material at said main surface of the temporary substrate having the nanopatterned relief, applying a first organic layer (24) over said conformally deposited first inorganic layer (22), applying a second inorganic layer (26) over said first organic layer (24), removing the temporary substrate (TS) to form a released surface of the nanolayer structure (22), and applying an electro-optical layer structure (10) on the released surface of the nanolayer structure (22).