E.i. Dupont De Nemours and Company

Samsung Electronics Co., Ltd.

Nanosys, Inc.

Jonathan M Ziebarth

Adam Fennimore

J Wallace Parce

Robert S Dubrow

William P Freeman

Jeffery A Whiteford

Joel Gamoras

Andreas Meisel

Shihai Kan

Baixin Qian

Paul Bernatis

Nora Sabina Radu

Reid John Chesterfield

Jeffrey A Merlo

Nugent Truong

There is provided a process for forming a contained second layer over a first layer, including the steps: There is also provided an organic electronic device made by the process.

Process and materials for making contained layers and devices made with same

There is provided a process for forming a layer of electroactive material having a substantially flat profile. The process includes the steps of providing a workpiece having at least one active area; depositing a liquid composition including the electroactive material onto the workpiece in the active area, to form a wet layer; treating the wet layer on the workpiece at a controlled temperature in the range of &#x2212;25 to 80&#xb0; C. and under a vacuum in the range of 10to 1,000 Torr, for a first period of 1-100 minutes, to form a partially dried layer; and heating the partially dried layer to a temperature above 100&#xb0; C. for a second period of 1-50 minutes to form a dried layer.

Process for forming an electroactive layer

Compositions containing a nanostructure, preferably a nanocrystal, are provided. The nanostructures have ligands bound to the surface. Such ligands are preferably siloxane containing ligands having at least one &#x2014;COON group, although ligands having various &#x2550;P&#x2550;O groups are also contemplated. The nanostructures can be embedded into a polymer such as a silicone polymer.

Nanocrystal doped matrixes

There is provided a process for forming a contained second layer over a first layer, including the steps:

Matrixes doped with semiconductor nanocrystals are provided. In certain embodiments, the semiconductor nanocrystals have a size and composition such that they absorb or emit light at particular wavelengths. The nanocrystals can comprise ligands that allow for mixing with various matrix materials, including polymers, such that a minimal portion of light is scattered by the matrixes. The matrixes of the present invention can also be utilized in refractive index matching applications. In other embodiments, semiconductor nanocrystals are embedded within matrixes to form a nanocrystal density gradient, thereby creating an effective refractive index gradient. The matrixes of the present invention can also be used as filters and antireflective coatings on optical devices and as down-converting layers. Processes for producing matrixes comprising semiconductor nanocrystals are also provided. Nanostructures having high quantum efficiency, small size, and/or a narrow size distribution are also described, as are methods of producing indium phosphide nanostructures and core-shell nanostructures with Group II-VI shells.

Growing community of inventors

Santa Barbara, CA, United States of America

Jonathan M Ziebarth