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




Subscribe to our free daily newsletters



TECH SPACE
Molybdenum disulfide holds promise for light absorption
by Staff Writers
Houston TX (SPX) May 08, 2016


Using a layer of molybdenum disulfide less than one nanometer thick, researchers in Rice University's Thomann lab were able to design a system that absorbed more than 35 percent of incident light in the 400- to 700-nanometer wavelength range. Image courtesy Thomann Group and Rice University. For a larger version of this image please go here.

Mechanics know molybdenum disulfide (MoS2) as a useful lubricant in aircraft and motorcycle engines and in the CV and universal joints of trucks and automobiles. Rice University engineering researcher Isabell Thomann knows it as a remarkably light-absorbent substance that holds promise for the development of energy-efficient optoelectronic and photocatalytic devices.

"Basically, we want to understand how much light can be confined in an atomically thin semiconductor monolayer of MoS2," said Thomann, assistant professor of electrical and computer engineering and of materials science and nanoengineering and of chemistry. "By using simple strategies, we were able to absorb 35 to 37 percent of the incident light in the 400- to 700-nanometer wavelength range, in a layer that is only 0.7 nanometers thick."

Thomann and Rice graduate students Shah Mohammad Bahauddin and Hossein Robatjazi have recounted their findings in a paper titled "Broadband Absorption Engineering To Enhance Light Absorption in Monolayer MoS2," which was recently published in the American Chemical Society journal ACS Photonics. The research has many applications, including development of efficient and inexpensive photovoltaic solar panels.

"Squeezing light into these extremely thin layers and extracting the generated charge carriers is an important problem in the field of two-dimensional materials," she said. "That's because monolayers of 2-D materials have different electronic and catalytic properties from their bulk or multilayer counterparts."

Thomann and her team used a combination of numerical simulations, analytical models and experimental optical characterizations. Using three-dimensional electromagnetic simulations, they found that light absorption was enhanced 5.9 times compared with using MoS2 on a sapphire substrate.

"If light absorption in these materials was perfect, we'd be able to create all sorts of energy-efficient optoelectronic and photocatalytic devices. That's the problem we're trying to solve," Thomann said.

She is pleased with her lab's progress but concedes that much work remains to be done. "The goal, of course, is 100 percent absorption, and we're not there yet."


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
Rice University
Space Technology News - Applications and Research






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
TECH SPACE
JILA extends laser 'combing' method to identify large, complex molecules
Boulder CO (SPX) May 06, 2016
JILA physicists have extended the capability of their powerful laser "combing" technique to identify the structures of large, complex molecules of the sort found in explosives, pharmaceuticals, fuels and the gases around stars. The advance, described in a Nature paper published online May 4, 2016 was made possible by a cooling method developed by Harvard University researchers, who co-auth ... read more


TECH SPACE
First rocket made ready for launch at Vostochny spaceport

Supernova iron found on the moon

Russia to shift all Lunar launches to Vostochny Cosmodrome

Lunar lava tubes could help pave way for human colony

TECH SPACE
Boiling water may be cause of Martian streaks: study

Airbus DS to build STEM centre at its UK Exomars facility

Opportunity robotic arm camera passes diagnostic test

Phase two of ExoMars mission delayed to 2020

TECH SPACE
US to move more assets into deep space over next 4 years

Simulators give astronauts glimpse of future flights

When technology bites back

Menstruation in spaceflight: Options for astronauts

TECH SPACE
China can meet Chile's satellite needs: ambassador

China launches Kunpeng-1B sounding rocket

South China city gears up for satellite tourism

China's long march into space

TECH SPACE
Tim Peake goes roving

Russia delays space crew's return to Earth

15 years of Europe on the International Space Station

US-Russia Space Projects Set Example of Good Cooperation

TECH SPACE
SpaceX to launch Japanese satellite early Friday

New small launch vehicles

Vector Space Systems aims to redefine space commerce

Spaceport Camden Partners with NASA Innovation Competition

TECH SPACE
Light Echoes Give Clues to Protoplanetary Disk

On the Road to Finding Other Earths

Kepler spacecraft recovered and returned to the K2 Mission

Lone planetary-mass object found in family of stars

TECH SPACE
Cavitation intensity enhanced using pressure at bubble collapse region

Hybrid nanoantennas offer new platform for ultradense data recording

Squished cells could shape design of synthetic materials

Engineers create a better way to boil water




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