Nanotechnology Now

Our NanoNews Digest Sponsors



Heifer International

Wikipedia Affiliate Button


android tablet pc

Home > Press > Alternative to fullerenes in organic solar cells - just as exciting

Abstract:
An insight into the properties of fullerene is set to open the door to a new class of electronic acceptors which can be used to build better and cheaper organic solar cells.

Alternative to fullerenes in organic solar cells - just as exciting

Coventry, UK | Posted on December 12th, 2012

Organic solar cells have advanced a great deal since they were first invented nearly 20 years ago, but the fullerene component has remained largely the same and this has had a braking effect on the evolution of the technology.

But now scientists at the University of Warwick have pinpointed an unappreciated property of fullerenes, namely the availability of additional electron accepting states, which could be replicated to create a new class of ‘fullerene mimics'.

Their research is described in a new study in the journal Advanced Materials.

The solar cell industry has been searching for an alternative to fullerenes for some time as they have many drawbacks as electronic acceptors, including a very limited light adsorption and a high cost.

Also, going beyond fullerene derivatives would increase the possible blends that can be considered for organic solar cells.

The University of Warwick scientists, led by Professor Alessandro Troisi in the Department of Chemistry, have discovered that fullerene can accept electrons in a number of excited states, not just in its ground anionic state.

These extra states make the process of electron capture faster and improve the efficiency of the charge separation process.

This particular property is not possessed by chance - it needs to be designed into a material and so any attempt to make a fullerene substitute needs to take this property into account.

Professor Troisi believes this is why several attempts to date by the industry to find a replacement have failed.

However the Warwick scientists have shown that a new class of molecular acceptors with this electronic characteristic can be designed relatively easily, providing a route towards replacing fullerene derivatives in solar cells.

Professor Troisi said: "Finding a replacement to fullerene has eluded the scientific community and the photovoltaics industry for the best part of two decades.

"By pinpointing this particular way in which fullerene behaves, we believe we have found a key which may unlock the door to new replacements for this material.

"Using this knowledge, we are now collaborating with experimentalists at University of Warwick to actively develop fullerene substitutes."

A patent application has been filed and the scientists are keen to work with commercial partners to bring this technology to market.

The study, What makes fullerene acceptors special as electron acceptors in organic solar cells and how to replace them, was co-authored by Alessandro Troisi and Tao Liu from the University of Warwick and was funded by the European Research Council.

Full bibliographic informationAdvanced Materials.

What makes fullerene acceptors special as electron acceptors in organic solar cells and how to replace them

The DOI for this study is 10.1002/adma.201203486.

####

About University of Warwick
The University of Warwick is consistently ranked in the Top Ten UK Universities.

For more information, please click here

Contacts:
Coventry, United Kingdom, CV4 7AL
+44 024 7652 3523

Anna Blackaby
+44 024 76575910
or +44(0)7785 433155


Professor Alessandro Troisi
+44 (0) 24765 23228

Copyright © AlphaGalileo

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

PetLife Comments on CNN Story on Scorpion Venom Health Benefits August 27th, 2014

Nanodiamonds Are Forever: A UCSB professor’s research examines 13,000-year-old nanodiamonds from multiple locations across three continents August 27th, 2014

Aspen Aerogels, Inc. to Present at Barclays CEO Energy-Power Conference August 27th, 2014

Nanotech Security Corp. to Acquire Fortress Optical Features Ltd., a Leading Producer of Banknote Security Features August 27th, 2014

Discoveries

The thunder god vine, assisted by nanotechnology, could shake up future cancer treatment: Targeted therapy for hepatocellular carcinoma using nanotechnology August 27th, 2014

Creation of a Highly Efficient Technique to Develop Low-Friction Materials Which Are Drawing Attention in Association with Energy Issues August 26th, 2014

Competition for Graphene: Berkeley Lab Researchers Demonstrate Ultrafast Charge Transfer in New Family of 2D Semiconductors August 26th, 2014

Symphony of nanoplasmonic and optical resonators leads to magnificent laser-like light emission August 26th, 2014

Announcements

Nanodiamonds Are Forever: A UCSB professor’s research examines 13,000-year-old nanodiamonds from multiple locations across three continents August 27th, 2014

Aspen Aerogels, Inc. to Present at Barclays CEO Energy-Power Conference August 27th, 2014

Nanotech Security Corp. to Acquire Fortress Optical Features Ltd., a Leading Producer of Banknote Security Features August 27th, 2014

Malvern specialists to deliver inaugural short course on polymer characterization at Interplas 2014 August 27th, 2014

Energy

Aspen Aerogels, Inc. to Present at Barclays CEO Energy-Power Conference August 27th, 2014

Competition for Graphene: Berkeley Lab Researchers Demonstrate Ultrafast Charge Transfer in New Family of 2D Semiconductors August 26th, 2014

Chemical reaction yields "tapes" of porphin molecules: Flexible tapes from the nanoworld August 13th, 2014

Eco-friendly 'pre-fab nanoparticles' could revolutionize nano manufacturing: UMass Amherst team invents a way to create versatile, water-soluble nano-modules August 13th, 2014

Solar/Photovoltaic

Competition for Graphene: Berkeley Lab Researchers Demonstrate Ultrafast Charge Transfer in New Family of 2D Semiconductors August 26th, 2014

Eco-friendly 'pre-fab nanoparticles' could revolutionize nano manufacturing: UMass Amherst team invents a way to create versatile, water-soluble nano-modules August 13th, 2014

An Inkjet-Printed Field-Effect Transistor for Label-Free Biosensing August 11th, 2014

“Active” surfaces control what’s on them: Researchers develop treated surfaces that can actively control how fluids or particles move August 6th, 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