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In the solar of the future there are Photovoltaic cells super-efficient and also economical. Efficient because, speaking of yield, the Photovoltaic cells that will be built with innovative materials will achieve yields of 40 percent. Economical because, with economies of scale, they will cost less than silicon solar cells. In doing so, thanks also to the spread of energy storage systems, solar will be interesting even in the absence of public incentives.
This is said by ENEA - National Agency for New Technologies, Energy and Sustainable Economic Development - which in photovoltaics has set itself the goal of developing advanced technologies to create high-efficiency and low-cost modules for the conversion of radiation. solar into electricity. An objective that goes in the direction of encouraging innovation and competitiveness of the national production system. And, above all, without depending on state funding.
The ENEA studies on Photovoltaic cells in silicon have led to the development of new materials capable of improving the performance of devices. The lines of research on the development of solar cells to heterojunction with a yield of more than 17 percent. These details Photovoltaic cells they can be used both as a separate solar device and as a rear component of a very high efficiency tandem device.
As part of the heterojunction solar cells innovative materials have been developed for the anterior component of the tandem structure. An example of this are the cells made of CZTS, an easily available copper, zinc and tin sulphide, which stands out for its properties, low costs and ease of disposal.
Yet another example are cells based on perovskite crystals, which have captured the attention of the research community because they allow hybrid solar cells, that is, based on organic and inorganic materials, with low production costs and yields of well over 20 percent. Finally, also in the field of organic solar cells, ENEA has managed to achieve excellent results and an efficiency of over 10 percent.
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