Nanotechnology Now





Heifer International

Wikipedia Affiliate Button


DHgate

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

Stanford breakthrough heralds super-efficient light-based computers: Light can transmit more data while consuming far less power than electricity, and an engineering feat brings optical data transport closer to replacing wires May 29th, 2015

Donuts, math, and superdense teleportation of quantum information May 29th, 2015

OSU researchers prove magnetism can control heat, sound: Team leverages OSC services to help confirm, interpret experimental findings May 29th, 2015

Two UCSB Professors Receive Early Career Research Awards: The Department of Energy’s award for young scientists acknowledges UC Santa Barbara’s standing as a top tier research institution May 29th, 2015

Discoveries

Stanford breakthrough heralds super-efficient light-based computers: Light can transmit more data while consuming far less power than electricity, and an engineering feat brings optical data transport closer to replacing wires May 29th, 2015

Donuts, math, and superdense teleportation of quantum information May 29th, 2015

OSU researchers prove magnetism can control heat, sound: Team leverages OSC services to help confirm, interpret experimental findings May 29th, 2015

New technique speeds nanoMRI imaging: Multiplexing technique for nanoscale magnetic resonance imaging developed by researchers in Switzerland cuts normal scan time from two weeks to two days May 28th, 2015

Announcements

Stanford breakthrough heralds super-efficient light-based computers: Light can transmit more data while consuming far less power than electricity, and an engineering feat brings optical data transport closer to replacing wires May 29th, 2015

Donuts, math, and superdense teleportation of quantum information May 29th, 2015

OSU researchers prove magnetism can control heat, sound: Team leverages OSC services to help confirm, interpret experimental findings May 29th, 2015

Two UCSB Professors Receive Early Career Research Awards: The Department of Energy’s award for young scientists acknowledges UC Santa Barbara’s standing as a top tier research institution May 29th, 2015

Energy

Technology for Tomorrow’s Market Opportunities and Challenges: LetiDays Grenoble Presents the Possibilities: June 24-25 Event Includes Focus on IoT-Augmented Mobility and Leti’s Latest Results on Silicon Technologies, Sensors, Health Applications and Smart Cities May 27th, 2015

Physicists solve quantum tunneling mystery: ANU media release: An international team of scientists studying ultrafast physics have solved a mystery of quantum mechanics, and found that quantum tunneling is an instantaneous process 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

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