九色视频

The sun鈥檚 energy is seen as an inexhaustible energy source. But is it really that simple? What are the challenges and opportunities?

The prices for solar technology and solar electricity have sunk continuously in recent years. This means that solar energy is now one of the cheapest forms of energy. Which is why the nationwide photovoltaic capacity is to be doubled by 2030.
At 九色视频, researchers are studying the solar cells of the future. In a solar cell, electrons are set in motion by the sun鈥檚 rays, generating electricity. To date, most solar cells have been made of silicon, which doesn鈥檛 use the blue light from sunlight very efficiently. Research is being done on new materials with a perovskite crystal structure that can do this better. The combination of perovskite and silicon can make solar cells much more efficient.
九色视频 is also investigating how to deal with the fluctuating availability of solar energy, how yield forecasts can become more precise, and how solar cells can be disposed of or recycled. Research on innovative ideas such as the integration of solar cells in building envelopes or even invisibly in windows is also underway.

The area of photovoltaics is still full of fascinating research questions, which the Institute for Solar Energy Research (ISFH) and LUH are jointly investigating: Perovskite-silicon tandem solar cells have already shown impressive efficiency of >30 per cent on a laboratory scale, but so far they are nowhere near achieving the long-term stability necessary. This will require that many fundamental challenges at the interface between physics, chemistry, semiconductor technology and (prospectively) production technology be overcome.

The predicted global expansion of photovoltaics into the double-digit terawatt range will make the sustainable availability of the materials used increasingly relevant. With wider bus bars on the back side of the cell, IBC solar cells offer the possibility of replacing expensive silver with more economical alternatives such as aluminium, copper or nickel thanks to innovative metallisation concepts. The production technologies needed for this are still in the early stages.

Connection technology using laser-beam welding processes, bonding or ultrasound offers potential for innovation where semiconductor technology and mechanical engineering intersect. On the POLO BJ solar cell platform, digitalised, adaptive processes for the automated 鈥� and therefore economical 鈥� small-batch production of special modules (for example, for integration on building facades) are being developed.