Particulate for organic and inorganic light active devices and methods for fabricating the same

• US 20070087469A1
• Filed: 09/25/2006
• Published: 04/19/2007
• Est. Priority Date: 06/21/2004
• Status: Abandoned Application

• Current Assignee: Articulated Technologies, LLC
• Original Assignee: Articulated Technologies, LLC
• Inventors: Daniels, John
• Application Number:
  US11/527,212
• Publication Number:
  US 20070087469A1
• Time in Patent Office: Days
• US Class Current: 438/99
• CPC Class Codes: B82Y 20/00 Nanooptics, e.g. quantum optics or photonic crystals
• CPC Class Codes: B82Y 30/00 Nanotechnology for materials or surface science, e.g. nanocomposites
• CPC Class Codes: H01L 33/24 of the light emitting region, e.g. non-planar junction
• CPC Class Codes: H10K 2102/331 Nanoparticles used in non-emissive layers, e.g. in packaging layer
• CPC Class Codes: H10K 50/125 specially adapted for multicolour light emission, e.g. for emitting white light
• CPC Class Codes: H10K 59/1201 Manufacture or treatment
• CPC Class Codes: H10K 71/00 Manufacture or treatment specially adapted for the organic devices covered by this subclass
• CPC Class Codes: H10K 71/18 using non-liquid printing techniques, e.g. thermal transfer printing from a donor sheet
• CPC Class Codes: H10K 71/50 Forming devices by joining two substrates together, e.g. lamination techniques
• CPC Class Codes: H10K 71/80 using temporary substrates

Abstract

A method of making polymer blend light active particles, comprising the steps of providing a solution comprised of a first organic light active diode material and a second organic light active diode material in a solvent and providing a non-solvent liquid. The method of making polymer blend light active particles also includes the step of adding the solution to the non-solvent liquid to cause a precipitation reaction resulting in multi-layered particles comprising the first and second organic light active diode materials. A method of making a light active electronic device, comprising the steps of providing at least one of organic and inorganic light active particles in a non-solvent liquid; adding a charge transport carrier polymer to the non-solvent liquid to form a fluid carrier/particle mixture; and disposing the mixture between electrodes to form a light active electronic device.

Claims

1. A method of making polymer blend light active particles, comprising the steps of:

providing a solution comprised of a first organic light active diode material and a second organic light active diode material in a solvent;

providing a non-solvent liquid; and

adding the solution to the non-solvent liquid to cause a precipitation reaction resulting in multi-layered particles comprising the first and second organic light active diode materials.

2. A method of making polymer blend light active particles according to claim 1;

wherein the first and second organic light active diode materials are provided in a solvent.

3. A method of making polymer blend light active particles according to claim 1;

wherein the first and second organic light active diode material provided in different solvents-streams that are mixed in the non-solvent liquid.

4. A method of making polymer blend light active particles according to claim 1, further including the step of forming nano-particles from said multi-layered particles.

5. A method of making polymer blend light active particles according to claim 4, wherein said nano-particles are formed using a microfluidizer.

6. A method of making a light active electronic device, comprising the steps of:

providing at least one of organic and inorganic light active particles in a non-solvent liquid;

adding a charge transport carrier polymer to the non-solvent liquid to form a fluid carrier/particle mixture; and

disposing the mixture between electrodes to form a light active electronic device.

7. A method of making a light active electronic device according to claim 6, further comprising the steps of:

aligning the particles in the mixture; and

hardening the fluid carrier to secure the alignment of the particles.

8. A method of making a light active electronic device according to claim 6;

wherein the charge transport material comprises at least one of an ionic transport material, a conjugated polymer charge transport material and a semi-conductor charge transport material.

9. A method of making a light active electronic device according to claim 6;

wherein the particles comprise a multi-layered organic particle comprising hole transport and electron transport layers.

10. A method of making a light active electronic device according to claim 6;

wherein the particles comprise an inorganic p/n junction particle further comprising an inorganic LED chip.

11. A method of making a light active electronic device according to claim 6;

further comprising the step of hardening the fluid carrier to form a solid-state light active electronic device.