Innovative photovoltaic sheet of transparent and inexpensive perovskite

A team of scientists led by researcher Hendrik Bolink the Institut de Ciencia Molecular (ICMol) Science Park of the University of Valencia has developed a photovoltaic device thin, sheet-like, very low cost and high efficiency. The results of this study, conducted in collaboration with researchers at the École Polytechnique Fédérale de Lausanne (EPFL) in Switzerland, were published yesterday in the journal Nature Photonics. The solar cell developed by researchers ICMol is formed by a layer of perovskite organic-inorganic hybrid material of easy synthesis and low cost, placed between two ultra thin layers of organic semiconductors, with a total thickness of less than one half micron ( millionth of a meter). Hendrik Bolink explains that for their preparation “have been used down processes similar to those used in the printing temperature, allowing manufacture these devices on glass sheets or plastic sheets to be flexible.” The revolution of the perovskite addition, “there is the possibility of making devices semitransparent appearance, a very useful feature for solar harvesting from buildings, as also for its thinness and low weight could be placed on the windows and , while slowing down the entry of sunlight, generate electricity, “says the researcher, who points out that construction companies have already shown interest. The photovoltaic cells that convert sunlight directly into electricity used in the majority of cases, around 85% – crystalline silicon as the active material, a very expensive product, while the remainder is based on thin films of cadmium telluride and cadmium sulfide, cheaper to produce, but based on very limited and polluting raw materials include cadmium. For this reason, “the demonstration of high efficiency solar cells using thin layer of abundant and inexpensive materials, such as those in perovskites, opens the door to increase the percentage of solar energy in the mix of renewable sources,” according Bolink . Hendrik Bolink his doctoral thesis at the University of Groningen in the Netherlands in 1997 and subsequently the multinational chemical company DSM joined as a researcher and project leader R & D. After three years, Bolink served as Development Director in PolyLED Materials unit of multinational company Philips. In 2003 he joined the ICMol order to develop a line of research on novel molecular optoelectronic devices. So far, Bolink has published 125 scientific articles in international journals, while it has been principal investigator on eleven projects funded by the Framework Programme of the European Union, three of which are currently active.




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