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Heliatek Transparent Solar Cell Sets New Energy Efficiency Record
Heliatek GmbH, a pioneer in organic solar film technology, has set a new benchmark in energy efficiency for transparent solar cells. The latest development features a 40% light transmittance with an energy conversion efficiency exceeding 7%, marking a significant leap forward in the field of transparent photovoltaics. This achievement builds on Heliatek's previous record of 12% efficiency for opaque organic solar cells.
This breakthrough aligns with the company’s broader vision to integrate its HeliaFilm™ technology into building materials, offering architects and manufacturers a sustainable power solution. According to CEO Thibaud Le Seguillon, "Transparency is central to our product strategy. HeliaFilm™ can be customized to suit various applications, making it a versatile component for modern construction." He emphasized that the film serves as both a light-transmitting element and an energy generator, opening up new market opportunities.
The integration of HeliaFilmâ„¢ into glass panels and roofs not only enhances energy production but also helps reduce glare and improve aesthetics. For instance, using the film on car roofs allows automakers to meet eco-innovation targets while generating clean energy. Similarly, architectural windows embedded with HeliaFilmâ„¢ can scatter natural light and generate electricity simultaneously, improving both functionality and sustainability.
The latest transparent solar cell model achieved a 7.2% efficiency under standard test conditions, maintaining a 40% light transmission rate. This performance is particularly impressive given that transparency inherently limits the amount of light available for energy harvesting. However, by optimizing the balance between light transmission and energy output, Heliatek has managed to maintain high efficiency across different applications.
The company uses small molecule-based oligomers in its production process, which are applied through a low-temperature roll-to-roll vacuum technique. This method enables precise control over color and light transmission, allowing for tailored solutions for diverse architectural and automotive needs. With this innovation, Heliatek continues to push the boundaries of what transparent solar technology can achieve.