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US 10,763,437 B2Granted
Diffusion-limiting electroactive barrier layer for an optoelectronic component
AssigneeInuru GmbH
InventorsMarcin Ratajczak, Patrick Barkowski
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Abstract
An optoelectronic component is provided having a cathode, an anode and a layer system between the cathode and the anode, the layer system includes electroactive layers, in particular charge-carrier injection and transport layers, and including an optically active layer, the charge-carrier injection and transport layers themselves being a diffusion barrier to water or oxygen.
Claims19
An optoelectronic component (1) having a cathode (25) and an anode (27) and a layer system between the cathode (25) and the anode (27) comprising
- at least one electron injection layer (29) or electron extraction layer adjacent to the cathode,
- at least one electron transport layer (33),
- at least one optically active layer,
- at least one hole transport layer (35),
- at least one hole injection layer (31) or hole extraction layer adjacent to the anode, characterised in that the at least one electron injection layer (29) or electron extraction layer and the at least one hole injection layer (31) or hole extraction layer are diffusion-limiting to water and/or oxygen and having a water vapour transmission rate (WVTR) of less than 1 g/(m2*d) and an oxygen transmission rate (OTR) of less than 1 cm3/(m2*d) and
- the at least one electron transport layer (33) and the at least one hole transport layer (35) represent a diffusion barrier against water and/or oxygen and having a water vapour transmission rate (WVTR) of less than 0.1 g/(m2*d) and an oxygen transmission rate (OTR) of less than 0.1 cm3/(m2*d).
3 more elements
Dependencies are inferred from the claim text.