Nanotechnology Now





Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Yale engineers making solar power more efficient

Abstract:
Innovations by a team of Yale University researchers could lead to improvements in basic solar power technology that result in lower-cost, higher-efficiency photovoltaic systems.

Yale engineers making solar power more efficient

New Haven, CT | Posted on December 8th, 2011

Photovoltaics (PV) directly convert sunlight into electricity. PV systems can be arrayed on rooftops to generate electricity for entire buildings, among other uses. Less expensive, more efficient systems could encourage broader use of this clean energy technology.

The Yale team, which includes both engineers and applied physicists, has developed a new way of guiding and channeling electrons within hybrid organic-inorganic PV devices by better controlling the structure and alignment of the materials in the system. This improves efficiency by maximizing the amount of light that is successfully converted into electricity.

"The key here is controlling the structure of the system on multiple levels, or length scales, and doing it in a manner that is conducive to fabrication of devices over large areas," said Chinedum O. Osuji, a Yale engineering professor and a principal investigator behind research recently published online in the journal Advanced Materials. Lisa D. Pfefferle and Andre D. Taylor of Yale's Department of Chemical and Environmental Engineering and Sohrab Ismail-Beigi of the Department of Applied Physics also served as principal investigators.

In their current form, hybrid organic-inorganic PV devices convert only a small fraction of light into energy. This is largely due to the poorly ordered structure of the active materials now used, resulting in a convoluted path for the flow of electrons. The Yale team has devised ways of more efficiently channeling the electrons through the system, involving aligned arrays of polymer-coated nanowires that can act as the active material for a solar cell. The application of magnetic fields aligns the nanowires, creating more direct pathways for charge transport in the device.

"We are currently working on building and systematically testing actual solar cells using these highly ordered materials" Osuji said.

Other authors include: Shanju Zhang, Candice I. Pelligra, Gayatri Keskar, Pawel W. Majewski, all of the Department of Chemical and Environmental Engineering at the Yale School of Engineering & Applied Science; and Jie Jiang of the Department of Applied Physics, also at Yale School of Engineering & Applied Science.

Support for the research was provided by the National Science Foundation.

####

For more information, please click here

Contacts:
Eric Gershon
203-432-8555

Copyright © Yale 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 Links

Link to Chinedum O. Osuji's faculty page:

Related News Press

News and information

Who needs water to assemble DNA? Non-aqueous solvent supports DNA nanotechnology May 27th, 2015

Controlled Release of Anticorrosive Materials in Spot by Nanocarriers May 27th, 2015

Production of Copper Cobaltite Nanocomposites with Photocatalytic Properties in Iran May 27th, 2015

Dr.Theivasanthi Slashes the Price of Graphene Heavily: World first & lowest price – Nano-price (30 USD / kg) of graphene by nanotechnologist May 26th, 2015

Govt.-Legislation/Regulation/Funding/Policy

Who needs water to assemble DNA? Non-aqueous solvent supports DNA nanotechnology May 27th, 2015

Researchers find the 'key' to quantum network solution May 25th, 2015

One step closer to a single-molecule device: Columbia Engineering researchers first to create a single-molecule diode -- the ultimate in miniaturization for electronic devices -- with potential for real-world applications May 25th, 2015

DNA Double Helix Does Double Duty in Assembling Arrays of Nanoparticles: Synthetic pieces of biological molecule form framework and glue for making nanoparticle clusters and arrays May 25th, 2015

Nanoelectronics

One step closer to a single-molecule device: Columbia Engineering researchers first to create a single-molecule diode -- the ultimate in miniaturization for electronic devices -- with potential for real-world applications May 25th, 2015

Basel physicists develop efficient method of signal transmission from nanocomponents May 23rd, 2015

This Slinky lookalike 'hyperlens' helps us see tiny objects: The photonics advancement could improve early cancer detection, nanoelectronics manufacturing and scientists' ability to observe single molecules May 23rd, 2015

Random nanowire configurations increase conductivity over heavily ordered configurations May 16th, 2015

Discoveries

Who needs water to assemble DNA? Non-aqueous solvent supports DNA nanotechnology May 27th, 2015

Production of Copper Cobaltite Nanocomposites with Photocatalytic Properties in Iran May 27th, 2015

Fine-tuned molecular orientation is key to more efficient solar cells May 26th, 2015

DNA Double Helix Does Double Duty in Assembling Arrays of Nanoparticles: Synthetic pieces of biological molecule form framework and glue for making nanoparticle clusters and arrays May 25th, 2015

Announcements

Who needs water to assemble DNA? Non-aqueous solvent supports DNA nanotechnology May 27th, 2015

Controlled Release of Anticorrosive Materials in Spot by Nanocarriers May 27th, 2015

Production of Copper Cobaltite Nanocomposites with Photocatalytic Properties in Iran May 27th, 2015

Dr.Theivasanthi Slashes the Price of Graphene Heavily: World first & lowest price – Nano-price (30 USD / kg) of graphene by nanotechnologist May 26th, 2015

Energy

Fine-tuned molecular orientation is key to more efficient solar cells May 26th, 2015

DNA Double Helix Does Double Duty in Assembling Arrays of Nanoparticles: Synthetic pieces of biological molecule form framework and glue for making nanoparticle clusters and arrays May 25th, 2015

Visualizing How Radiation Bombardment Boosts Superconductivity: Atomic-level flyovers show how impact sites of high-energy ions pin potentially disruptive vortices to keep high-current superconductivity flowing May 23rd, 2015

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

Solar/Photovoltaic

Fine-tuned molecular orientation is key to more efficient solar cells May 26th, 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

Wearables may get boost from boron-infused graphene: Rice U. researchers flex muscle of laser-written microsupercapacitors May 18th, 2015

Random nanowire configurations increase conductivity over heavily ordered configurations May 16th, 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