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Research on Replacement of ITO and PEDOT in organic and ZnO in CIGS solar cells presented at IEEE 4th World Conference on Photovoltaic Energy Conversion in Waikoloa, Hawaii
Eikos Inc., a developer and licensor of highly transparent carbon nanotube (CNT) inks for conductive coatings and circuits, in collaboration with the National Renewable Energy Laboratory (NREL), received Best In Category Distinction for Novel Materials & Devices for its poster presentation at the IEEE 4th World Conference on Photovoltaic Energy Conversion in Waikoloa, Hawaii in May 2006.
The presentation “Carbon Nanotubes as Transparent Electrodes for Photovoltaics,” focused on Eikos Invisicon® carbon nanotube conductive coatings. NREL/Eikos created organic solar cell structures using Invisicon® which achieved efficiencies of 2.6% for devices with PEDOT (PolyEthyleneDiOxyThiophene) and 1.4% for those without PEDOT. These results are higher than any other organic devices employing transparent carbon nanotube electrodes reported to date. Single Walled Nanotube transparent conductors offer versatile materials options for photovoltaic applications such as solar cells.
Related work under the same U.S. Department of Energy contract produced the world’s first thin-film Copper Indium Gallium diSelenide (CIGS) solar cell incorporating CNTs. An energy conversion efficiency of 12.98% was achieved using Invisicon® as a substitution for doped Zinc Oxide in these cells. This work was also presented at the World Conference.
Aspects of this research are slated to be published in a major journal in the near future, coauthored by NREL of Golden, CO and Eikos of Franklin, MA.
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.
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