Nanotechnology Now

Our NanoNews Digest Sponsors





Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > State-of-the-art probe will lead to better solar cells

Professor Venkateswara Bommisetty
Professor Venkateswara Bommisetty

Abstract:
Federal research dollars will help South Dakota State University scientists build a first-of-its-kind microscope that could ultimately help scientists at SDSU and elsewhere develop better solar cells for converting sunlight to electricity.

State-of-the-art probe will lead to better solar cells

Brookings, SD | Posted on December 31st, 2009

Professor Venkateswara Bommisetty in SDSU's Department of Electrical Engineering & Computer Science will build a new photoactivated scanning probe microscopy tool that makes significant improvements on the existing scanning probe microscope.

"It will simultaneously measure efficiency-limiting factors by identifying defects, their structure and locations in a wide variety of solar cells, that existing microscopes are not able to do," Bommisetty said. "This instrument will also probe the light-energy conversion mechanisms in other optoelectronic devices such as light-emitting diodes."

The new equipment will be developed by an SDSU team under Bommisetty's leadership. Bommisetty received $456,000 for development of the scanning probe microscopy tool so that he and his colleagues can study photoactivated processes — processes activated by light — at the nanoscale. The grant is from the National Science Foundation. SDSU and its Department of Electrical Engineering and Computer Science are supplying an additional $200,000 to make a total project of about $650,000.

Bommisetty's career as a researcher has focused in part on developing better technologies to make such measurements at the nanoscale level.

"It is extremely important. It is a very hot area of research," Bommisetty noted. "Researchers elsewhere are facing the same problem. Application of these new technologies for the first time is important to help SDSU make its mark in developing new solar cell technologies."

The grant will create two new jobs in Brookings as Bommisetty hires a postdoctoral researcher and a graduate student to build the microscopy tool under his direction, acquiring valuable skills in the process. The grant will also help acquire high-tech components such as various types of laser generators and scanners necessary to build the scanning probe microscope.

There are three types of solar cells, Bommisetty noted: Inorganic solar cells based on materials such as silicon; organic solar cells that use carbon-based polymers; and hybrid solar cells that combine different technologies.

"The faculty members at SDSU are working on all three types of solar cells. In each of the respective solar cells, the challenges are different," Bommisetty said. "We know that all these technologies can be far more efficient than what they are today. The problem is, we don't know what factors are limiting the efficiencies of these solar cells. This microscope is specifically designed to identify defects that limit solar cell efficiency."

Developing such a microscope has been the goal of solar cell researchers for a long time. Importantly, the scanning probe microscopy tool is designed to measure different variables at the same time — a key advance in such technology.

"Simultaneous is a key word for our work, because if we measure one variable at a time, we won't know if we are modifying other variables during measurement or not," Bommisetty said. "If we measure them all at the same time, we can determine the exact problem and can effectively develop methods to address the problem."

Bommisetty said SDSU already is acquiring components and researchers will begin assembling the new scanning probe microscopy tool in 2010. One version of the microscope will go into the molecular electronics bay of a new SDSU cleanroom, planned for construction in 2010, so that scientists can use it to test new solar cells.

####

About South Dakota State University
South Dakota State University is the state’s largest university—and if you ask us, its best. With South Dakota’s most comprehensive range of academic offerings, there’s no better place to explore everything from aerospace to zoology.

For more information, please click here

Copyright © South Dakota State University

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

Nanotech could rid cattle of ticks, with less collateral damage September 1st, 2015

Scientists 'squeeze' light one particle at a time: A team of scientists have measured a bizarre effect in quantum physics, in which individual particles of light are said to have been 'squeezed' -- an achievement which at least one textbook had written off as hopeless September 1st, 2015

Using ultrathin sheets to discover new class of wrapped shapes: UMass Amherst materials researchers describe a new regime of wrapped shapes August 31st, 2015

New material science research may advance tech tools August 31st, 2015

Jobs

New ASTM Standards Will Help Educate Present and Future Nanotechnology Workforces April 26th, 2015

SUNY Poly & M+W Make Major Announcement: Major Expansion To Include M+W Owned Gehrlicher Solar America Corporation That Will Create up to 400 Jobs to Develop Solar Power Plants at SUNY Poly Sites Across New York State March 26th, 2015

Is US immigration policy 'STEMming' innovation? Study sheds light on why foreign STEM students stay in US or return home March 11th, 2015

Nanotech Discoveries Move from Lab to Marketplace with Lintec Deal: Licensing Partnership Brings Together University Technology, New Richardson-Based Facility Directed by Alumni February 9th, 2015

Govt.-Legislation/Regulation/Funding/Policy

An engineered surface unsticks sticky water droplets August 31st, 2015

New material science research may advance tech tools August 31st, 2015

Artificial leaf harnesses sunlight for efficient fuel production August 30th, 2015

Researchers use DNA 'clews' to shuttle CRISPR-Cas9 gene-editing tool into cells August 30th, 2015

Announcements

Nanotech could rid cattle of ticks, with less collateral damage September 1st, 2015

Scientists 'squeeze' light one particle at a time: A team of scientists have measured a bizarre effect in quantum physics, in which individual particles of light are said to have been 'squeezed' -- an achievement which at least one textbook had written off as hopeless September 1st, 2015

An engineered surface unsticks sticky water droplets August 31st, 2015

New material science research may advance tech tools August 31st, 2015

Tools

Nanolab Technologies LEAPS Forward with High-Performance Analysis Services to the World: Nanolab Orders Advanced Local Electrode Atom Probe (LEAP®) Microscope from CAMECA Unit of AMETEK Materials Analysis Division August 27th, 2015

Nanometrics to Participate in the Citi 2015 Global Technology Conference August 26th, 2015

50 Years of Scanning Electron Microscopy from ZEISS: ZEISS celebrates the birth of the first commercial scanning electron microscope in 1965 August 26th, 2015

Announcing Oxford Instruments and School of Physics signing a Memorandum of Understanding August 26th, 2015

Solar/Photovoltaic

Artificial leaf harnesses sunlight for efficient fuel production August 30th, 2015

CWRU researchers efficiently charge a lithium-ion battery with solar cell: Coupling with perovskite solar cell holds potential for cleaner cars and more August 27th, 2015

Novel nanostructures for efficient long-range energy transport August 21st, 2015

Charge transport in hybrid silicon solar cells August 17th, 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







Car Brands
Buy website traffic