Large-scale Synthesis of Perovskite Nanostructures

Background

Ternary transition metal oxides, including BaTiO3 and SrTiO3, with a perovskite structure, are noteworthy for their exceptional dielectric, piezoelectric, electrostrictive, pyroelectric, and electro‑optic properties. Understanding the behavior and preparation of these ferroelectric materials with structure dependent physical properties, at the nanoscale level, are of great importance to the development of molecular electronics.

Technology

The present invention relates to single crystalline perovskite structures that can be reproducibly fabricated using a large-scale, facile solid-state reaction that employs environmentally friendly reactants. The exact shape of the nanostructure, i.e. nanowires, nanoparticles or nanocubes, is dependent upon the reaction conditions employed.

Advantages

Large scale, simple and generalizable solid-state strategy to synthesize barium and strontium titanate nanostructures. With this procedure, organometallic precursors, which can potentially be extremely toxic, expensive, unstable, explosive and / or pyrophoric, are not used. In addition, the ability to control the formation of different morphologies of barium and strontium titanate nanostructures is achieved. Because of the simplicity and generalizability of the approach used, it is anticipated that this methodology can be expanded to the large-scale (grams at the minimum) synthesis and preparation of other important ferroelectric systems at the nanoscale.

Application

- Integrated nanoscale devices - Dielectrics - Piezoelectrics - Electromechanical Devices - Non‑volatile Memory - Dynamic random access memory (DRAM) - Field-effect transistors - Electro‑optic devices - Logic circuitry

Patent Status

Patent application submitted

Stage Of Development

WO 2006085912

Licensing Potential

Development partner,Commercial partner,Licensing

Licensing Status

Available for licensing.

Additional Info

https://stonybrook.technologypublisher.com/files/sites/d2tj3pht6oamzf3aynig_perovskite.jpg Please note, header image is purely illustrative. Source: ChemLuo, Wikimedia Commons, CC BY 4.0.

Category(s):

Campus > Stony Brook University

Technology Classifications > Nanotechnology

Technology Classifications > Material and Composites

Case ID: R7721

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For Information, Contact:

Donna Tumminello

Assistant Director

State University of New York at Stony Brook

6316324163

donna.tumminello@stonybrook.edu

Inventors:

Stanislaus Wong

Yuanbing Mao