MATERIALS | CONSTRUCTION
Right: Econcore and Solarge have devel- oped very lightweight solar panels
green electricity while reducing the port’s carbon footprint. “This project is not just beautiful
– it’s a game-changer,” said Guido van Tartwijk, CEO of Heliatek. “Our solar films have transformed three undulating rooftops into ultra-green electricity generators, seam- lessly integrating into the existing port landscape. He said it was the company’s
largest installation of its kind on non-straight building shapes. The cells cover an area of 509 sq m and has a capacity of 29.5 kWp.
Plant light Meanwhile, researchers at the University of California Los Angeles have developed solar panels that can be added to a greenhouse roof – and still allow through the light that plants need. Yang Yang, a materials scientist in the school of engineering, leads a team that designed the device. Incorporating a layer of L-glutathione – a
naturally occurring chemical typically sold as an antioxidant dietary supplement – helped extend solar cell lifetime, improve efficiency, and still allow sunlight to reach plants in a greenhouse prototype. “Organic materials are uniquely suitable for agrivol- taics because of their light- absorption selectivity,” said Yang. “The main drawback that
has prevented their widespread use up to now is their lack of stability.”
Organic solar cells tend to degrade more quickly because sunlight can cause organic materials to oxidise and lose electrons. The researchers found that an additional layer of L-glutathione prevented the other materials in the solar cell from oxidising, which resulted in the organic cells maintaining more than 80% efficiency after 1,000 hours of continuous use — as opposed to less than 20% without the added layer UCLA has now established a start-up that aims to scale up production of the organic solar cells for
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