Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

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

Leti IEDM 2016 Paper Clarifies Correlation between Endurance, Window Margin and Retention in RRAM for First Time: Paper Presented at IEDM 2016 Offers Ways to Reconcile High-cycling Requirements and Instability at High Temperatures in Resistive RAM December 6th, 2016

Tokyo Institute of Technology research: 3D solutions to energy savings in silicon power transistors December 6th, 2016

Physicists decipher electronic properties of materials in work that may change transistors December 6th, 2016

Infrared instrumentation leader secures exclusive use of Vantablack coating December 5th, 2016

Jobs

Participate in the development of Malaysia’s National Graphene Action Plan 2020 October 10th, 2016

Leading Advanced Materials Manufacturer Pixelligent Closes $10.4 Million in Funding: Capital Will Boost Capacity for North American Manufacturing, Drive Asian Expansion, and Continue Innovation in Solid State Lighting and OLED Display Applications August 16th, 2016

SUNY Poly Welcomes DPS as the Global Engineering Firm Opens Its U.S. Advanced Technology Group Headquarters at Cutting-Edge ZEN Building November 20th, 2015

SUNY Poly CNSE Announces Milestone as M+W Group Opens U.S. Headquarters at Albany Nanotech Complex and Research Alliance Begins $105M Solar Power Initiative October 20th, 2015

Govt.-Legislation/Regulation/Funding/Policy

Physicists decipher electronic properties of materials in work that may change transistors December 6th, 2016

Construction of practical quantum computers radically simplified: Scientists invent ground-breaking new method that puts quantum computers within reach December 5th, 2016

Shape matters when light meets atom: Mapping the interaction of a single atom with a single photon may inform design of quantum devices December 4th, 2016

Research Study: MetaSOLTM Shatters Solar Panel Efficiency Forecasts with Innovative New Coating: Coating Provides 1.2 Percent Absolute Enhancement to Triple Junction Solar Cells December 2nd, 2016

Announcements

Leti IEDM 2016 Paper Clarifies Correlation between Endurance, Window Margin and Retention in RRAM for First Time: Paper Presented at IEDM 2016 Offers Ways to Reconcile High-cycling Requirements and Instability at High Temperatures in Resistive RAM December 6th, 2016

Tokyo Institute of Technology research: 3D solutions to energy savings in silicon power transistors December 6th, 2016

Physicists decipher electronic properties of materials in work that may change transistors December 6th, 2016

Infrared instrumentation leader secures exclusive use of Vantablack coating December 5th, 2016

Tools

Deep insights from surface reactions: Researchers use Stampede supercomputer to study new chemical sensing methods, desalination and bacterial energy production December 2nd, 2016

Controlled electron pulses November 30th, 2016

Scientists shrink electron gun to matchbox size: Terahertz technology has the potential to enable new applications November 25th, 2016

News from Quorum: The Agricultural Research Service of the USDA uses a Quorum Cryo-SEM preparation system for the study of mites, ticks and other soft bodied organisms November 22nd, 2016

Solar/Photovoltaic

Research Study: MetaSOLTM Shatters Solar Panel Efficiency Forecasts with Innovative New Coating: Coating Provides 1.2 Percent Absolute Enhancement to Triple Junction Solar Cells December 2nd, 2016

Throwing new light on printed organic solar cells December 1st, 2016

Physics, photosynthesis and solar cells: Researchers combine quantum physics and photosynthesis to make discovery that could lead to highly efficient, green solar cells November 30th, 2016

'Back to the Future' inspires solar nanotech-powered clothing November 15th, 2016

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