Nanotechnology Now





Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > NSF-funded project aims to grab more sun for solar cells

A) A higher energy photon creates an electron-hole pair in a wide gap absorber. B) The junction electric field drives the carriers into the narrower gap host material, where one of them decays by impact ionization. C) The photon effectively creates two electrons and two holes in the host material, where they are mobile and ready for collection. (Courtesy of Stephen Kevan)
A) A higher energy photon creates an electron-hole pair in a wide gap absorber. B) The junction electric field drives the carriers into the narrower gap host material, where one of them decays by impact ionization. C) The photon effectively creates two electrons and two holes in the host material, where they are mobile and ready for collection. (Courtesy of Stephen Kevan)

Abstract:
University of Oregon-led project with Oregon State and University of Illinois will involve a three-year push

NSF-funded project aims to grab more sun for solar cells

Eugene, OR | Posted on August 31st, 2010

Researchers from three institutions are uniting under a three-year, $1.6 million grant from the National Science Foundation to boost the juice of solar cells.

Under the project researchers will seek to design new semiconductor structures that "will overcome the current limit on efficiency of most solar cells in which each light particle captured by the sun only provides one electron of electrical current," said Stephen Kevan, head of physics at the University of Oregon and the project's principle investigator. "If our efforts succeed, we will significantly improve solar cell efficiency using environmentally benign materials."

The grant, which begins Sept. 1, comes from the NSF's Directorate for Mathematical and Physical Sciences as part of its Solar Energy Initiative.

Geraldine Richmond, professor of chemistry at the UO, and Malgorzata Peszynsk, professor of mathematics at Oregon State University, are co-principal investigators on the project. An expert in the growth of thin films, Angus Rockett, associate head of materials science and engineering at the University of Illinois at Urbana-Champaign, also will have an important role in the project.

Multiple laboratories at the UO, OSU and Illinois will be used in device design, development and optimization, including the Center for Advanced Materials Characterization in Oregon (CAMCOR), which is located in the UO's underground Lokey Laboratories. "We are exploring promising combinations of semiconducting materials with appropriate band alignment and growth characteristics to promote more efficient impact ionization," Kevan said.

The goal is to design nanostructured semiconducting materials that convert and channel sunlight into useful electrical energy rather than into waste heat. The principle behind the new process, called heterojunction-assisted impact ionization, is that shorter wavelength photons will be absorbed to capture a higher ratio of electrons, providing for higher electrical currents and a reduction of energy loss.

Three additional collaborators in the project are: Dave Cohen, professor of physics at the UO, who, like Rockett, has extensive experience working on photovoltaic materials including thin films; Janet Tate, a solid-state physicist at OSU with expertise in growing thin-film electronic and optical materials; and Guenter Schneider is a solid-state theorist at OSU who will work closely with Peszynska to model potential new devices and predict new target structures.

Kevan, Cohen, Richmond and Tate also are member faculty of the Oregon Built Environment & Sustainable Technologies Center (Oregon BEST), a nonprofit organization established by the Oregon Legislature to commercialize and transform sustainable built environment and renewable energy research into on-the-ground products, services and jobs. In 2009, Oregon BEST funding established the Photovoltaics Characterization Laboratory, a shared user facility that is part of the Support Network for Research and Innovation in Solar Energy (SuNRISE), a collaborative solar energy laboratory based at the UO.

More information, including a video, about the newly funded project led by Kevan can be found in a news feature on the Oregon BEST website.

####

About University of Oregon
The University of Oregon is a world-class teaching and research institution and Oregon's flagship public university. The UO is a member of the Association of American Universities (AAU), an organization made up of the 63 leading public and private research institutions in the United States and Canada. The University of Oregon is one of only two AAU members in the Pacific Northwest.

For more information, please click here

Contacts:
Media Contact:
Jim Barlow
director of science and research communications

541-346-3481

Source:
Stephen Kevan
head, department of physics
541-346-4742

Copyright © University of Oregon

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

Conversion of Greenhouse Gases to Syngas in Presence of Nanocatalysts in Iran May 22nd, 2015

New Antibacterial Wound Dressing in Iran Can Display Replacement Time May 22nd, 2015

Haydale Named Lead Sponsor for Cambridge Graphene Festival May 22nd, 2015

Simulations predict flat liquid May 21st, 2015

Academic/Education

SUNY Poly CNSE and NIOSH Launch Federal Nano Health and Safety Consortium: May 20th, 2015

New JEOL E-Beam Lithography System to Enhance Quantum NanoFab Capabilities May 6th, 2015

FEI Partners With the George Washington University to Equip New Science & Engineering Hall: Suite of new high-performance microscopes will be used for cutting-edge experiments at GW’s new research facility April 29th, 2015

Renishaw Raman systems used to study 2D materials at Boston University, Massachusetts, USA. April 28th, 2015

Announcements

Conversion of Greenhouse Gases to Syngas in Presence of Nanocatalysts in Iran May 22nd, 2015

New Antibacterial Wound Dressing in Iran Can Display Replacement Time May 22nd, 2015

Haydale Named Lead Sponsor for Cambridge Graphene Festival May 22nd, 2015

INSIDDE: Uncovering the real history of art using a graphene scanner May 21st, 2015

Energy

Conversion of Greenhouse Gases to Syngas in Presence of Nanocatalysts in Iran May 22nd, 2015

Sandia researchers first to measure thermoelectric behavior by 'Tinkertoy' materials May 20th, 2015

Industrial Nanotech, Inc. Announces Official Launch of the Eagle Platinum Tile™ May 19th, 2015

FEI and Weatherford Enter Into Joint Agreement for Advanced Reservoir Characterization Services May 18th, 2015

Safety-Nanoparticles/Risk management

Statement by QD Vision regarding European Parliament’s Vote on Cadmium-Based Quantum Dots May 20th, 2015

SUNY Poly CNSE and NIOSH Launch Federal Nano Health and Safety Consortium: May 20th, 2015

Cotton fibres instead of carbon nanotubes May 9th, 2015

Nanoparticles in consumer products can significantly alter normal gut microbiome May 4th, 2015

Grants/Awards/Scholarships/Gifts/Contests/Honors/Records

What makes cancer cells spread? New device offers clues May 19th, 2015

Researchers build new fermion microscope: Instrument freezes and images 1,000 individual fermionic atoms at once May 13th, 2015

International and U.S. Students and Teachers Headed to Toronto for 34th Annual International Space Development Conference®: Students competed in prestigious NSS-NASA Ames Space Settlement Design Contest May 9th, 2015

Pixelligent Technologies Announces $1M Phase-II OLED Lighting Award From the US Department of Energy May 9th, 2015

Research partnerships

Supercomputer unlocks secrets of plant cells to pave the way for more resilient crops: IBM partners with University of Melbourne and UQ May 21st, 2015

Taking control of light emission: Researchers find a way of tuning light waves by pairing 2 exotic 2-D materials May 20th, 2015

Efficiency record for black silicon solar cells jumps to 22.1 percent: Aalto University's researchers improved their previous record by over 3 absolute percents in cooperation with Universitat Politècnica de Catalunya May 18th, 2015

Organic nanoparticles, more lethal to tumors: Carbon-based nanoparticles could be used to sensitize cancerous tumors to proton radiotherapy and induce more focused destruction of cancer cells, a new study shows May 18th, 2015

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More










ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project