The current thin-film solar cells (type III/V) have an efficiency which is 40 percent, but are very expensive and can only as applied to satellite solar panels. Using mirror systems that focus thousand times you can provide now on Earth in a cost-effective manner. The TU / researchers expect that your nano-structured solar cells can achieve an efficiency of more than 65 per cent over ten years.Jos Haverkort: "When would that the Netherlands participate in time a commercial use of Nanowires solar cells there is a great urgency on Board now."The research is carried out together with Philips MiPlaza.
She think nano-technology, in combination with the use of concentrated sunlight through mirror systems, has the potential to the world with a cost price lower than 50 cents per watt peak guiding the most efficient system of solar cell. In comparison: for the present generation of solar cells this cost price is € 1.50 per watt peak.
Stacking Nanowires make it possible to stack a number of partial cell (junctions).This process each Subcell converts a color from sunlight optimally to Elektrizit?t.Der highest yield that is reported in a Nanowires solar cell 8.4 percent so far.Haverkort: "we expect that a protective shell to the nanowires is the decisive step towards the same efficiency with nanowires solar cells such as thin-film cells."Haverkort thinks that he will come to 65 percent efficiency at 5 to 10 intersections.
Scarcity of raw materials also also the researchers expect significant savings in production costs, can be made, because grow nanowires on cheap silicon substrate and which results in lower cost of ownership of the growth equipment grow. in addition is faster, the combination of mirror systems with nanotechnology imply an acceptable use of scarce and therefore expensive metals Gallium and Indium.
An agency of the Ministry of Economic Affairs, granted EUR 1.2 million to researchers of dr. Jos Haverkort, dr. Erik Bakkers en dr. Ir.Geert Verbong for your exploration of Nanowires Solarzellen.Es is your expectation that, in combination with mirror systems these solar cells can generate a significant part of European electricity demand in southern Europe and North Africa.
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The above story is made of materials reprinted provided by Eindhoven University of Technology (with editorial adjustments of ScienceDaily staff).
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