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 Page 1/3
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Cost Effective,Perovskite-based thin film solar cells
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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