Subscribe to our free daily newsletters
. 24/7 Space News .




Subscribe to our free daily newsletters



TECH SPACE
NREL-led research effort creates new alloys, phase diagram
by Staff Writers
Golden CO (SPX) Jun 20, 2017


A multi-institutional team led by NREL discovered a way to create new alloys that could form the basis of next-generation semiconductors. The NREL team includes (left to right) Stephan Lany, Aaron Holder, Paul Ndione, and Andriy Zakutayev.

A multi-institutional team led by the U.S. Department of Energy's National Renewable Energy Laboratory (NREL) discovered a way to create new alloys that could form the basis of next-generation semiconductors.

Semiconductor alloys already exist-often made from a combination of materials with similar atomic arrangements-but until now researchers believed it was unrealistic to make alloys of certain constituents.

"Maybe in the past scientists looked at two materials and said I can't mix those two. What we're saying is think again," said Aaron Holder, a former NREL post-doctoral researcher and now research faculty at the University of Colorado Boulder. Holder is corresponding author of a new paper in Science Advances titled Novel phase diagram behavior and materials design in heterostructural semiconductor alloys. "There is a way to do it."

Scientists connected to the Center for Next Generation of Materials by Design (CNGMD) made the breakthrough and took the idea from theory to reality. An Energy Frontier Research Center, which is supported by the Energy Department's Office of Science and researchers from NREL, the Colorado School of Mines, Harvard University, Lawrence Berkeley National Laboratory, Massachusetts Institute of Technology, Oregon State University, and SLAC National Accelerator Laboratory.

"It's a really nice example of what happens when you bring different institutions with different capabilities together," said Holder. His co-authors from NREL are Stephan Lany, Sebastian Siol, Paul Ndione, Haowei Peng, William Tumas, John Perkins, David Ginley, and Andriy Zakutayev.

A mismatch between atomic arrangements previously thwarted the creation of certain alloys. Researchers with CNGMD were able to create an alloy of manganese oxide (MnO) and zinc oxide (ZnO), even though their atomic structures are very different. The new alloy will absorb a significant fraction of natural sunlight, although separately neither MnO nor ZnO can. "It's a very rewarding kind of research when you work as a team, predict a material computationally, and make it happen in the lab," Lany said.

Using heat, blending a small percent of MnO with ZnO already is possible, but reaching a 1:1 mix would require temperatures far greater than 1,000 degrees Celsius (1,832 degrees Fahrenheit), and the materials would separate again as they cool.

The scientists, who also created an alloy of tin sulfide and calcium sulfide, deposited these alloys as thin films using pulsed laser deposition and magnetron sputtering. Neither method required such high temperatures. "We show that commercial thin film deposition methods can be used to fabricate heterostructural alloys, opening a path to their use in real-world semiconductor applications," co-author Zakutayev said.

The research yielded a first look at the phase diagram for heterostructural alloys, revealing a predictive route for properties of other alloys along with a large area of metastability that keeps the elements combined. "The alloy persists across this entire space even though thermodynamically it should phase separate and decompose," Holder said.

Research paper

TECH SPACE
New waterproofing and antifouling materials developed by Swansea Scientists
Swansea UK (SPX) Jun 16, 2017
'Green' project led by Swansea scientists could replace more expensive and hazardous materials used for waterproofing and antifouling/fogging. New materials have been developed by scientists in the Energy Safety Research Institute (ESRI) at Swansea University which is nontoxic, economical and shows promise to replace more expensive and hazardous materials used for waterproofing and antifou ... read more

Related Links
National Renewable Energy Laboratory
Space Technology News - Applications and Research


Thanks for being here;
We need your help. The SpaceDaily news network continues to grow but revenues have never been harder to maintain.

With the rise of Ad Blockers, and Facebook - our traditional revenue sources via quality network advertising continues to decline. And unlike so many other news sites, we don't have a paywall - with those annoying usernames and passwords.

Our news coverage takes time and effort to publish 365 days a year.

If you find our news sites informative and useful then please consider becoming a regular supporter or for now make a one off contribution.

SpaceDaily Contributor
$5 Billed Once


credit card or paypal
SpaceDaily Monthly Supporter
$5 Billed Monthly


paypal only

Comment using your Disqus, Facebook, Google or Twitter login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle

TECH SPACE
To Be or Not to Be: At 20 ISS Goes Strong, But for How Long

Pence hails new NASA astronauts as 'best of us'

Additional Astronaut on the Space Station Means Dozens of New Team Members on the Ground

Roscosmos Says Cooperation With NASA Unaffected by 'Political Outbursts'

TECH SPACE
Proton returns to flight with US satellite after 12 month hiatus

NASA awards Universal Stage Adapter contract for SLS

Russian rocket returns to service with launch of US satellite

Ariane 5 launches its heaviest telecom payload

TECH SPACE
Walkabout Above 'Perseverance Valley'

Hot rocks, not warm atmosphere, led to relatively recent water-carved valleys on Mars

Opportunity Surveying the spillway into Perseverance Valley

Window to a watery past on Mars

TECH SPACE
Moon or Mars - humanity's next stop

China's space station to help maintain co-orbital telescope

Seeds of 5,000-year-old tree bud after returning from space

What China's space ambitions have to do with politics

TECH SPACE
Jumpstart goes into alliance with major aerospace and defence group ADS

Thomas Pesquet returns to Earth

Propose a course idea for the CU space minor

Leading Global Air And Space Law Group Joins Reed Smith

TECH SPACE
Oyster shells inspire new method to make superstrong, flexible polymers

Study explains how jewel scarab beetles appear golden

New technique enables 3-D printing with paste of silicone particles in water

Magnets, all the way down

TECH SPACE
Astronomers Explain Formation of Seven Exoplanets Around TRAPPIST-1

OU astrophysicist identifies composition of Earth-size planets in TRAPPIST-1 system

Flares May Threaten Planet Habitability Near Red Dwarfs

The Art of Exoplanets

TECH SPACE
A whole new Jupiter with first science results from Juno

First results from Juno show cyclones and massive magnetism

Jupiters complex transient auroras

NASA's Juno probe forces 'rethink' on Jupiter




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News






The content herein, unless otherwise known to be public domain, are Copyright 1995-2017 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. All articles labeled "by Staff Writers" include reports supplied to Space Media Network by industry news wires, PR agencies, corporate press officers and the like. Such articles are individually curated and edited by Space Media Network staff on the basis of the report's information value to our industry and professional readership. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement