cost effective,perovskite-based thin film solar cells
TRANSCRIPT
9-2012-2870 | Cost Effective,Perovskite-based thin film solar cells
Etgar Lioz, HUJI, Faculty of Science, The Institute of Chemistry
Background
Large scale application of solar cells depends on attaining high solar radiation conversion efficiency, AND
on further substantially reducing production costs.
Solar cells are typically constructed of multilayer heterostructures, having substantially three functions:
harvesting the solar radiation, conducting the resulting positive and the negative charge carriers.
Advancement in nanotechnology, in particular semiconductor nanostructures, opens the door for the use of
nanocrystalline pigments as attractive light harvesters due to their large optical cross section, tuneable
band gap and exceptional long term stability. These may enhance conversion efficiency and potentially
reduce production costs.
Our Innovation
We have recently discovered that in Dye sensitized solar cells (DSSCs) made of nanoparticles with pervoskites
as active layer the radiation harvesting layer can uniquely function also as a positive holes conductor. Our
invention, expanding on earlier joint development work with Prof. Graetzel, avoids the need for a dedicated
conductor for transporting positive charge carriers, considerably simplifies the solar cell structure and reduces
production costs.
Furthermore, these cells are made through solution-based processes, a much simpler and less costly
manufacturing process compared to conventional silicon based solar cells. Also, contrary to conventional DSSC
our invention is based on inorganic material, with inherent long term stability.
These photovoltaic cells yield remarkably high electrical performance level characteristics.
Yissum Research Development Company of the Hebrew University of Jerusalem
Hi-Tech Park, Edmond J. Safra Campus,Givat-Ram, Jerusalem
P.O. Box 39135, Jerusalem 91390 Israel
Telephone: 972-2-658-6688, Fax: 972-2-658-6689
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Key Features
Dye sensitized solar cells (DSSC) based on Perovskites, without a dedicated hole conducting material.
Technology is based on Nanostructures with controllable optical and electrical properties.
Inorganic materials assure the long term cell stability, substantially overcoming the limitation of
conventional DSSCs
Power conversion efficiency (PCE), short circuit current density and open circuit voltage values
extrapolated to be favourably compared to state of the art commercial solar cell.
Simplified solution-based production, reducing the need of costly high class, clean rooms production
infrastructure.
With this technology flexible and large area solar cells can conveniently be manufactured.
Development Milestones
Proof of concept devices fabricated and tested.
The Opportunity
Yissum Research Development Company of the Hebrew University of Jerusalem
Hi-Tech Park, Edmond J. Safra Campus,Givat-Ram, Jerusalem
P.O. Box 39135, Jerusalem 91390 Israel
Telephone: 972-2-658-6688, Fax: 972-2-658-6689
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Solar energy technology is a growing global market demonstrating stable double digit CGR.
Photovoltaic cells are the leading technology in the solar energy market.
The invented technology demonstrates a unique combination of inherently simple structure, simple
production infrastructure and low manufacturing cost, yet features potential high electrical performance
and high conversion efficiencies.
Seeking opportunity to license the technology, and funding for further development towards
commercialization.
Researcher Information
Dr. Lioz Etgar, E-mail: [email protected]
Website: http://chem.ch.huji.ac.il/etgar/index.html
Patent Status
Granted US 10,079,356
Contact for more information:
Amit Hayuth
VP, BUSINESS DEVELOPMENT
Yissum Research Development Company of the Hebrew University of Jerusalem
Hi-Tech Park, Edmond J. Safra Campus, Givat-Ram, Jerusalem
P.O. Box 39135, Jerusalem 91390 Israel
Telephone: 972-2-658-6688, Fax: 972-2-658-6689
Yissum Research Development Company of the Hebrew University of Jerusalem
Hi-Tech Park, Edmond J. Safra Campus,Givat-Ram, Jerusalem
P.O. Box 39135, Jerusalem 91390 Israel
Telephone: 972-2-658-6688, Fax: 972-2-658-6689
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