29 Apr '12, 11pm

Organic solar cell record claimed

Dresden-based Heliatek claiming the most efficient organic solar cells. "It is a world record for organic photovoltaic, with 10.7% cell efficiency on 1.1cm2," said the firm. The firm uses vacuum-deposited small oligomer molecules, developed and synthesised at its own lab in Ulm, Germany. The record cells are tandem, having two layers absorbing different wavelengths. "Heliatek is the only solar company in the world that uses the deposition of small organic molecules in a low temperature, roll-to-roll vacuum process," said CTO and co-founder Dr Martin Pfeiffer. Additional tests, claimed the firm, show superior performance in low light. "The measurement results for low light established that the efficiency not only remains constant, but even increases gradually," said Heliatek. "At an irradiation of 100W/m² the efficiency is 15% higher compared to the standard efficiency meas...

Full article: http://www.electronicsweekly.com/Articles/30/04/2012/5354...

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