Photovoltaics: in the future, solar panels will be… a hologram

    Photovoltaics: in the future, solar panels will be… a hologram

    Is it a hologram? No, a photovoltaic module. To increase the efficiency of the classic panels, the two companies Apollon GmbH and Solar Bankers have created a new system based on silicon, but which uses a holographic foil.


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    It's a hologram? not a form photovoltaic. To increase the efficiency of the classic panels, the two companies Apollon GmbH e Solar Bankers they have created a new system that is always based on silicon, but which uses a holographic foil.

    In this way, it is possible to achieve an efficiency of 28% compared to 17%, the average figure touched by the current modules. Although there are solutions with higher yields, such as those with gallium arsenide that achieve an efficiency of 42%, the two companies have staked everything on the silicon, firstly because it is one of the most abundant materials (the second most abundant element in the earth's crust) and secondly because it is cheap.

    Currently, almost all silicon solar panels on the market have an efficiency between 10% and 20%. To bring this value to 28, the companies have thought of a innovative system, still in the process of prototype, which at the same surface, would increase the yield. Thus, on the classic silicon base of the solar panel one was added holographic foil, capable of directing the light selectively onto the panel, managing its deflection and concentration.

    In addition, expensive technologies are not required to make it. Indeed, according to the producers, it is a cheap process and just as many cheap panels, which can be manufactured in Germany or the United States at a lower cost than Chinese factories that produce conventional panels.

    "Our solution solves the main negative aspects that make photovoltaic panels unprofitable technologies today" has explained Jost, President of Solar Bankers. It also takes less silicon to generate the same amount of energy. Contrary to today's photovoltaic modules, this system requires only a fraction of the semiconductor material, ie only 3% "while the yield per square meter of the module surface has almost doubled compared to the traditional panel".



    Francesca Mancuso

    Read also:

    - Concentrated photovoltaics: exploiting holograms to produce clean energy

    - The 7 alternatives to silicon in the future of photovoltaics

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