Helianthos

On September 8, 2011 Nuon announced the pilot plant would be closed down since no investor for production expansion could be found. However, on May 7, 2012 Nuon announced that Helianthos has been sold to HyET Solar. On September 8, 2011 Nuon announced the pilot plant would be closed down since no investor for production expansion could be found. However, on May 7, 2012 Nuon announced that Helianthos has been sold to HyET Solar. The process uses a temporary substrate on which flexible thin-film solar cells are deposited. The use of the temporary substrate allows relatively high processing temperatures while using (semi-)continuous roll-to-roll (or reel-to-reel) production processes and cost-efficient, abundantly available materials. The active layers of such solar cells comprise a transparent conductive oxide layer (TCO), an active absorbent layer (e.g. thin-film silicon), and a back contact layer (e.g. a reflective metal layer).