Nanotechnology Now

Our NanoNews Digest Sponsors





Heifer International

Wikipedia Affiliate Button


android tablet pc

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

Nano Ruffles in Brain Matter: Freiburg researchers decipher the role of nanostructures around brain cells in central nervous system function October 31st, 2014

Gold nanoparticle chains confine light to the nanoscale October 31st, 2014

'Nanomotor lithography' answers call for affordable, simpler device manufacturing October 31st, 2014

Device invented at Johns Hopkins provides up-close look at cancer on the move: Microscopic view of metastasis could give insight about how to keep cancer in check October 31st, 2014

Jobs

Secretary Vilsack Announces Partnership to Advance Commercial Potential of Cellulosic Nanomaterial from Wood December 11th, 2013

Cutting Away at the NRC's Research Capability December 6th, 2013

Project aims to mass-produce 'nanopetals' for sensors, batteries October 22nd, 2013

Governor Cuomo Announces 'Nano Utica' $1.5 Billion Public-Private Investment That Will Make the Mohawk Valley New York's Next Major Hub of Nanotech Research October 12th, 2013

Govt.-Legislation/Regulation/Funding/Policy

Gold nanoparticle chains confine light to the nanoscale October 31st, 2014

'Nanomotor lithography' answers call for affordable, simpler device manufacturing October 31st, 2014

Device invented at Johns Hopkins provides up-close look at cancer on the move: Microscopic view of metastasis could give insight about how to keep cancer in check October 31st, 2014

'Electronic skin' could improve early breast cancer detection October 29th, 2014

Announcements

Nano Ruffles in Brain Matter: Freiburg researchers decipher the role of nanostructures around brain cells in central nervous system function October 31st, 2014

Gold nanoparticle chains confine light to the nanoscale October 31st, 2014

'Nanomotor lithography' answers call for affordable, simpler device manufacturing October 31st, 2014

Device invented at Johns Hopkins provides up-close look at cancer on the move: Microscopic view of metastasis could give insight about how to keep cancer in check October 31st, 2014

Tools

Device invented at Johns Hopkins provides up-close look at cancer on the move: Microscopic view of metastasis could give insight about how to keep cancer in check October 31st, 2014

A new cheap and efficient method to improve SERS, an ultra-sensitive chemical detection technique October 28th, 2014

New Compact SIMS at 61st AVS | Visit us on Booth 311 October 28th, 2014

New nanodevice to improve cancer treatment monitoring October 27th, 2014

Solar/Photovoltaic

Gold nanoparticle chains confine light to the nanoscale October 31st, 2014

New solar power material converts 90 percent of captured light into heat: SunShot Project aims to make solar cost competitive October 29th, 2014

Advancing thin film research with nanostructured AZO: Innovnano’s unique and cost-effective AZO sputtering targets for the production of transparent conducting oxides October 23rd, 2014

Magnetic mirrors enable new technologies by reflecting light in uncanny ways October 16th, 2014

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







© Copyright 1999-2014 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE