Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button


Home > Press > Advancements in printable solar cell research using carbon nanotubes

Research on Replacement of ITO and PEDOT in organic and ZnO in CIGS solar cells will be presented at IEEE 4th World Conference on Photovoltaic Energy Conversion in Waikoloa, Hawaii

Advancements in printable solar cell research using carbon nanotubes announced by Eikos and National Renewable Energy Laboratory

Eikos Inc

Franklin, MA | Posted on May 05, 2006

Eikos Inc., a developer and licensor of highly transparent carbon nanotube (CNT) inks for conductive coatings and circuits, and the National Renewable Energy Laboratory (NREL) have achieved competitive efficiency in two types of solar cells using carbon nanotube conductive coatings, in a significant step toward developing fully printable solar cells.

The research will be presented in two sessions at the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion in Waikoloa, Hawaii, May 7-12.

Using Eikos Invisicon® carbon nanotube conductive coatings, NREL/Eikos created organic solar cell structures which achieved an efficiency of 2.6% -- making them competitive with commonly used Indium Tin Oxide (ITO) transparent conductors. Additionally, Invisicon® coatings replacing both ITO and PolyEthyleneDiOxyThiophene (PEDOT) were 1.5% efficient, and further reduce the number of layers and costs to these cells. Organic photovoltaics (OPVs) using carbon nanotubes are an attractive alternative to traditional silicon-based solar cells because they are inexpensive and abundant, can be manufactured more efficiently and are both lightweight and flexible.

Today, both ITO and PEDOT are used as transparent electrodes in organic cells. However, Indium Tin Oxide layers are expensive to fabricate, and Indium is costly to acquire and is only available in limited quantities. ITO is also optically, electronically and chemically problematic. PEDOT:PSS has limitations since it is known to degrade under UV illumination, introduces water in to the devices’ active layer, and retains a degree of acidity.

As part of the U.S. Department of Energy Contract through which the solar research is being conducted, NREL/Eikos also produced the world’s first thin-film Copper Indium Gallium diSelenide (CIGS) solar cell incorporating CNTs, with a significant 12.98% energy conversion efficiency using its Invisicon® transparent coatings instead of doped Zinc Oxide. Using anan aluminum aluminum doped Zinc Oxide transparent electrode, the record efficiency is thought to be 19.5%

According to program manager Jorma Peltola, “These are exciting developments for the solar community which is now one step closer to achieving a fully printable solar cell. Our Invisicon® technology will provide equal efficiency to conventional cells, at less than half the cost, with less weight and more flexibility. Eikos/NREL is proud to be spearheading research that could harness cleaner, more abundant solar energy resources.”

Aspects of this research are slated to be published in a major journal in the near future. The article is coauthored by NREL of Golden, Colorado and Eikos of Franklin, MA.


About Eikos:
Eikos, Inc. is a developer and manufacturer of highly transparent carbon nanotube inks for conductive coatings and circuits for use in solar cells, flat panel displays, OLED lighting, smart windows and other established markets. Eikos' patented InvisiconR transparent conductors ('nanowires') will enable high volume, low cost production of a thinner, more flexible and more durable conductive coating technology that will displace Indium Tin Oxide (ITO), Zinc Oxide, PEDOT/PSS, and other transparent conductors.

A privately held company headquartered in Franklin Massachusetts, Eikos has a number of licenses and development contracts with major global companies, U.S. military agencies and NASA.

For more information, please click here.

Andrew Lavin
A. Lavin Communications

Copyright © Eikos

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.

Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press


Iranian Scientists Present Graphic Model for Interaction of Anti-HIV Drug, HIV Virus November 20th, 2015

A simple, rapid test to help ensure safer meat November 19th, 2015

New Model Presented to Design, Produce Electronic Nanodevices November 6th, 2015

Are cars nanotube factories on wheels? Rice University, Paris colleagues: Study of lung cells suggests nanotubes are common pollutants October 20th, 2015


Medical and aerospace electronics powered by Picosun ALD November 26th, 2015

Scientists design a QKD-based quantum private query with no failure November 25th, 2015

MIT mathematicians identify limits to heat flow at the nanoscale: New formula identifies limits to nanoscale heat transfer, may help optimize devices that convert heat to electricity November 25th, 2015

Physicists explain the unusual behavior of strongly disordered superconductors: Using a theory they developed previously, the scientists have linked superconducting carrier density with the quantum properties of a substance November 25th, 2015


Tandem solar cells are simply better: Higher efficiency thanks to perovskite magic crystal November 24th, 2015

ORNL microscopy captures real-time view of evolving fuel cell catalysts November 21st, 2015

NREL research identifies increased potential for perovskites as a material for solar cells November 21st, 2015

Plasma Focus Device Applied to Produce Zinc Oxide Nanofilms November 18th, 2015

The latest news from around the world, FREE

  Premium Products
Only the news you want to read!
 Learn More
University Technology Transfer & Patents
 Learn More
Full-service, expert consulting
 Learn More

Nanotechnology Now Featured Books


The Hunger Project

Car Brands
Buy website traffic