Gallium arsenic solar cells

Gallium arsenic solar cells

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The new frontier of efficiency in the field ofphotovoltaic energyconsists of detailssolar cellsdeveloped with gallium arsenic.

Thegallium arsenic solar cellscome from Sweden and set a new efficiency record in photovoltaic performance. The innovation comes from Sweden where the development team of the private company Sol Voltaics has developed a production process calledAerotaxy, an economic way to make ad hoc molecules.

The technique used for the production of the new onesgallium arsenic solar cells it is innovative but not expensive: it consists in growing a matrix of nanowires directly on the surface of thesolar cell.

Electricity production with Photovoltaic cells is always looking for new methods to improve the efficiency of the conversion of solar radiation into clean electricity. New production methods must meet a large number of standards, first of all, they must keep costs within reasonable limits for large-scale deployment.

Thanks to his research, Sol Voltaics has succeeded in the aim of doubling the conversion efficiency of photovoltaics into GaAs (gallium arsenic). Thegallium arsenic solar cellsthey see a higher surface density with a net increase in overall efficiency. The energy efficiency achieved bygallium arsenic solar cellsit is equal to 15.3 per cent, a value that has obtained the official certification from the German researchers of the Fraunhofer ISE, breaking the world record.

The world record, before the innovation launched by Sol Voltaics, belonged to Lund University which in 2013 presented photovoltaic cells that integrated an array of nanowires capable of achieving an efficiency comparable to that of solar cells traditional using a very small surface. The Swedish company Sol Voltaics managed to beat the record set by Lund University by 1.2 percentage points; the production process ofsolar cellsmost efficient in the world uses a lower amount of gallium arsenic so it also decreases the construction costs of the cells themselves.

The use ofnanotechnologieshas always been a goal in the industryphotovoltaic but the high costs were holding back the development in this direction. The Aerotaxy production process, developed by Sol Voltaics, has managed to break down the barrier of prohibitive costs by managing to produce, at competitive prices,solar cellsefficient and ready to debut in the photovoltaic industry.

Erik Sit, chief executive officer of Sol Voltaics, is enthusiastic about the goal achieved: "we can't wait to work with industrial partners to be able to integrate our technology with silicon cells so as to make a leap in efficiency and go beyond 27% ".

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