Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Scientists ’PAD’ their way to new metal-oxide film technology

17.12.2004


University of California scientists working with a researcher from Washington State University at Los Alamos National Laboratory’s Superconductivity Technology Center have developed a novel method for creating high performance, inorganic metal-oxide films using polymer-assisted deposition, or PAD. The breakthrough could pave the way for a greater use of metal-oxide films into the electronics manufacturing industry.



"The successful creation of both simple and complex metal-oxide films using PAD is part of the significance of this invention," said Dean Peterson, director of the Superconductivity Technology Center. "This technology provides a cost-effective approach to grow electronic and optical materials, which would find wide applications in any fields where the material is needed in the film form."

The PAD process uses a water-based solution to create a high-quality film of nearly any metal oxide. The films can be made from a single or several different metals with controlled atomic weight relationships. Amorphous, polycrystalline, or epitaxial films can be made with thicknesses from 10 nanometers to hundreds of nanometers or thicker. Using PAD, Los Alamos researchers have produced films of simple metal oxides, such as titanium dioxide and zinc oxide, and also complex metal oxides, such as strontium titanate and indium tin oxide.


Metal-oxides are emerging as technically important materials because of the wide variety of physical properties they possess, which make them attractive for applications such as photovoltaic devices, gas sensors, microelectronics and corrosion protection devices. However, the production of high-quality metal-oxide films with a desired chemical composition has been costly and challenging. Metal-oxide films are typically grown by physical or chemical-vapor deposition techniques that require a vacuum system. Both techniques deliver quality metal-oxide films, but the cost of deposition systems and the ability to coat films only on a flat surface have limited their potential applications. Chemical solution deposition methods, such as sol-gel, are less capital-intensive, but many metal-oxides cannot be deposited using this technique.

The PAD process distinguishes itself from other coating technologies because of its low cost and ability to coat large areas and irregular surfaces. The technique not only uses 100 percent of the source materials, but also has the capability to control the chemical phases, microstructures and physical properties of the materials deposited.

Bill Tumas, director of the Laboratory’s Institute for Hydrogen and Fuel Cell Research said, "Perhaps the most promising aspect of this new technology is the potential diversity of materials that can be readily made. PAD has the capability to enable the rapid exploration of a wide range of new materials."

The development of the PAD metal-oxide film coating technology involved the expertise of a number of Los Alamos scientists, including Quanxi Jia, Yuan Lin, Haiyan Wang and Stephen Foltyn from the Superconductivity Technology Center of the Materials Science and Technology Division, and Mark McCleskey, Anthony Burrell and Gavin Collis from the Chemistry Division. The team also included Alexander DeQuan Li from the Chemistry Department at Washington State University in Pullman, Wash.

Todd Hanson | EurekAlert!
Further information:
http://www.lanl.gov

More articles from Power and Electrical Engineering:

nachricht Researchers use light to remotely control curvature of plastics
23.03.2017 | North Carolina State University

nachricht TU Graz researchers show that enzyme function inhibits battery ageing
21.03.2017 | Technische Universität Graz

All articles from Power and Electrical Engineering >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Giant Magnetic Fields in the Universe

Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.

The results will be published on March 22 in the journal „Astronomy & Astrophysics“.

Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...

Im Focus: Tracing down linear ubiquitination

Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.

Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...

Im Focus: Perovskite edges can be tuned for optoelectronic performance

Layered 2D material improves efficiency for solar cells and LEDs

In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...

Im Focus: Polymer-coated silicon nanosheets as alternative to graphene: A perfect team for nanoelectronics

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...

Im Focus: Researchers Imitate Molecular Crowding in Cells

Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to simulate these confined natural conditions in artificial vesicles for the first time. As reported in the academic journal Small, the results are offering better insight into the development of nanoreactors and artificial organelles.

Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

International Land Use Symposium ILUS 2017: Call for Abstracts and Registration open

20.03.2017 | Event News

CONNECT 2017: International congress on connective tissue

14.03.2017 | Event News

ICTM Conference: Turbine Construction between Big Data and Additive Manufacturing

07.03.2017 | Event News

 
Latest News

Northern oceans pumped CO2 into the atmosphere

27.03.2017 | Earth Sciences

Fingerprint' technique spots frog populations at risk from pollution

27.03.2017 | Life Sciences

Big data approach to predict protein structure

27.03.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>