Hybrid organic-inorganic light emitting device

Patent metadata

Field	Value
Publication number	US-12213331-B2
Application number	US-202217585384-A
Country	US
Kind code	B2
Filing date	Jan 26, 2022
Priority date	Jan 29, 2021
Publication date	Jan 28, 2025
Grant date	Jan 28, 2025

Abstract

An organic electronic optoelectronic device comprises a substrate, a first electrode positioned over the substrate, a first organic buffer layer positioned over the first electrode, and a first inorganic emissive layer positioned over the first organic buffer layer. A method of fabricating an organic optoelectronic device is also disclosed.

First claim

The invention claimed is:

1. An organic optoelectronic device, comprising:
a substrate;
a first electrode positioned over the substrate;
a first organic buffer layer positioned over the first electrode; and
a first inorganic emissive layer positioned over the first organic buffer layer.

2. The organic optoelectronic device of claim 1 , further comprising a first organic host layer positioned over the first organic buffer layer, wherein the first inorganic emissive layer is positioned within the first organic host layer.

3. The organic optoelectronic device of claim 2 , wherein the first inorganic emissive layer is positioned at a distance from an interface between the first organic buffer layer and the organic host layer of between 2.5 nm and 20 nm.

4. The organic optoelectronic device of claim 3 , wherein the distance is between 10 nm and 15 nm.

5. The organic optoelectronic device of claim 2 , wherein the first inorganic emissive layer comprises a multi quantum well structure.

6. The organic optoelectronic device of claim 1 , wherein the first inorganic emissive layer is a blue emissive layer.

7. The organic optoelectronic device of claim 1 , wherein the first inorganic emissive layer is a monolayer.

8. The organic optoelectronic device of claim 1 , wherein the first inorganic emissive layer has a thickness of between 1 nm and 100 nm.

9. The organic optoelectronic device of claim 1 , further comprising a second inorganic emissive layer positioned over the first inorganic emissive layer, the second inorganic emissive layer having a different chemical structure than the first inorganic emissive layer.

10. A product comprising the organic optoelectronic device of claim 1 , the product selected from the group consisting of a flat panel display, a curved display, a computer monitor, a medical monitor, a television, a billboard, a light for interior or exterior illumination and/or signaling, a heads-up display, a fully or partially transparent display, a flexible display, a rollable display, a foldable display, a stretchable display, a laser printer, a telephone, a mobile phone, a tablet, a phablet, a personal digital assistant (PDA), a wearable device, a laptop computer, a digital camera, a camcorder, a viewfinder, a micro-display, a 3-D display, a virtual reality or augmented reality display, a vehicle, a video wall comprising multiple displays tiled together, a theater or stadium screen, a light therapy device, and a sign.

Assignees

• Univ Michigan Regents

Inventors

• Lee Byungjun
• Kim Jongchan
• Forrest Stephen R

Classifications

• H10K50/85

  Arrangements for extracting light from the devices · CPC title

• H10K50/11 Primary

  characterised by the electroluminescent [EL] layers · CPC title

• H10K50/115 Primary

  comprising active inorganic nanostructures, e.g. luminescent quantum dots · CPC title

• H10K2102/351

  Thickness · CPC title

• H10K2102/00

  Constructional details relating to the organic devices covered by this subclass · CPC title