Subscribe to our free daily newsletters
  Solar Energy News  




Subscribe to our free daily newsletters



SOLAR DAILY
New generation of high-efficiency solar thermal absorbers developed
by Staff Writers
Bristol, UK (SPX) Jun 19, 2016


The focused ion beam fabricated trilayer metasurface within the inset shows rounded features in the upper 2-D gold square periodic surface. Image courtesy University of Bristol.

Researchers from the Universities of Bristol and Exeter are one step closer to developing a new generation of low-cost, high-efficiency solar cells. The structure is one of the world's first examples of a tri-layer metasurface absorber using a carbon interlayer.

The system, developed by Chenglong Wang a PhD student in Professor Martin Cryan's research group, uses amorphous carbon as an inter-layer between thin gold films with the upper film patterned with a 2D periodic array using focused ion beam etching.

The trilayer gold-carbon-gold metasurface strongly absorbs light across the solar spectrum but minimises emission of thermal radiation from the structure. The use of gold in the research is a first step towards a high temperature metasurface where gold can be replaced by other refractory metals such as tungsten or chrome.

The cell will be used for solar thermal energy applications and has the potential to reach much higher temperatures than simple black surfaces because it can minimise the emission of thermal radiation.

The metasurface has been developed as part of a joint project, led by Dr Neil Fox, between Bristol's Department of Electrical and Electronic Engineering and Schools of Physics and Chemistry. The aim of this project is to develop diamond-based solar thermionic devices, which use sunlight to get surfaces sufficiently hot that they emit electrons directly into a vacuum.

If these electrons are collected at a cooled anode, electrical energy can be produced with maximum efficiencies predicted to be much higher than is achievable using conventional silicon solar cells.

Martin Cryan, Professor of Applied Electromagnetics and Photonics in the Department of Electrical and Electronic Engineering, said: "Integrating diamond within metasurfaces is very challenging, and this paper is a first step in that direction using amorphous carbon.

"The next stage is to carry out high temperature testing on the structures and to attempt to reach the ~700 degrees celsius required to obtain efficient thermionic emission."

The Bristol team have been working with Professor Tapas Mallick from the University of Exeter to develop the low-cost solar concentrator systems.


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

.


Related Links
University of Bristol
All About Solar Energy at SolarDaily.com






Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

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

Previous Report
SOLAR DAILY
World Bank finds cash moving to renewables
Washington (UPI) Jun 14, 2016
Investments in renewable energy made up more than half of all private investments last year, signaling a low-carbon shift is under way, the World Bank said. A report from the bank finds global private investments held relatively steady from 2014 to total $111.6 billion last year. Investments in renewable energy, however, were higher in 2015 than during the past five years. "Solar ... read more


SOLAR DAILY
Bioenergy integrated in the bio-based economy crucial to meet climate targets

Chemicals from wood waste

New 3-D printed polymer can convert methane to methanol

Nissan bets on ethanol for fuel-cell vehicles

SOLAR DAILY
How insights into human learning can foster smarter artificial intelligence

China's Midea begins takeover bid for German robotics firm

Robots to provide a steadying hand at the right time

Flight of the RoboBee

SOLAR DAILY
Scotland investing more in offshore wind

Gamesa, Siemens join forces to create global wind power leader

Renewables getting cheaper, report finds

Germany slows pace of green energy transition

SOLAR DAILY
Olli, a 3D printed, self-driving minibus, to hit the road in US

US authorities extend deadline for VW in 'dieselgate' scandal

China's Uber rival Didi Chuxing raises $7.3 bn in new capital

What's driving the next generation of green products?

SOLAR DAILY
Loofah-based material could give lithium batteries a boost

Storage technologies for renewable energy can pay off

A new way to control oxygen for electronic properties

Switzerland winds up superconductivity

SOLAR DAILY
Southern Research launches 'Gen IV' nuclear power effort with key hire

Proposed bilateral deal allows US to share nuclear reactors with Norway

Japan says ageing nuclear reactors can stay on line

France halts reactor in Areva parts scandal

SOLAR DAILY
Norway MPs vote to go carbon neutral by 2030

Algorithm could help detect and reduce power grid faults

It pays to increase energy consumption

Changing the world, 1 fridge at a time

SOLAR DAILY
EU at loggerheads with Poland over World Heritage forest

Honduras protest demands international probe into activist's murder

European droughts hit British trees the hardest

California's urban trees offer $1 billion in benefits




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