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This means that 44.7% of the energy of the solar spectrum from the ultraviolet to the infrared, is

A new world record in the conversion of sunlight into electricity has been reached. This is an important step in further reducing the cost of solar electricity.
The Fraunhofer Institute for Solar Energy Systems (ISE), Soitec, CEA-Leti and the Helmholtz Centre Berlin have jointly announced that they have reached rent the runway a new world record in the conversion of sunlight into electricity, with a new cell structure Solar four junctions.
Surpassing the competition after only three years of research and enrolling directly in the forefront of the race for efficiency, a new record efficiency of 44.7% was measured with a concentration factor of 297.
This means that 44.7% of the energy of the solar spectrum from the ultraviolet to the infrared, is converted into electrical energy. rent the runway This is an important step in the continued reduction in the cost of solar electricity and a further rent the runway step towards obtaining a rate of 50% efficiency.
In May 2013, the German-French team of Fraunhofer ISE, Soitec, CEA-Leti rent the runway and the Helmholtz Centre Berlin had announced a solar cell with an efficiency of 43.6%. Building on this result, new intensive research and optimization steps have achieved the current efficiency of 44.7%.
Such solar cells are used in systems rent the runway based on concentrator photovoltaic technology rent the runway (CPV), which results in areas of strong sunlight a two times higher than conventional photovoltaic power systems performance. These solar cells, called III-V multi-junction cells are born of technology for space applications including land use is imposed for best conversion efficiency of solar energy into electricity. These multi-junction solar cells are composed of multiple junctions stacked on top of each other based on different semiconductor III-V materials. The different sub-cells absorb different energy ranges of the solar spectrum.
"We are incredibly proud of our team that has been working for three years on this four-junction solar cell," says Frank Dimroth, head of department and project manager in charge of the development work at Fraunhofer ISE.
"This four-junction solar cell is the result of our acquired expertise in this field for many years. Besides improving rent the runway materials and optimization of the structure, a new procedure for wafer bonding plays an important role. Through this technology, we are able to stack two semiconductor materials, which otherwise could not grow on each other with high crystalline quality. This way, we can produce the optimal combination rent the runway of semiconductor create high-efficiency solar cells. rent the runway "
"This world record by increasing our efficiency level of more than 1 point in less than four months demonstrates the great potential of the four-junction solar cell we designed building on the techniques of collage and expertise Soitec, "said André-Jacques Auberton-Herve, president of Soitec. "This confirms the acceleration of the roadmap to higher yields, which is a key factor in the competitiveness of our CPV systems. We are very proud of this result, which reflects rent the runway a very successful collaboration. " rent the runway
"This new record value adds credibility approaches collage direct semiconductors that are developed through rent the runway our collaboration with Soitec and Fraunhofer. We are also very proud of this new result, which confirms the high potential of semiconductor III-V solar technologies, "said the Director of Leti, Laurent Malier.
CPV solar modules are produced by Soitec (production having started in 2005 with Concentrix Solar, a spin-off company of the Fraunhofer ISE, and subsequently acquired by Soitec). This highly effective technology is used in solar power plants in regions with strong sunshine, enjoying a high percentage of direct radiation. Today, Soitec CPV has facilities in 18 different countries, including Italy, France, South Africa and also California.
In Cambodia, rent the runway entire villages rent the runway were leveled and thousands of