Solar Trees: First Large‐Scale Demonstration of Fully Solution Coated, Semitransparent, Flexible Organic Photovoltaic Modules

<b>The technology behind a large area array of flexible solar cells</b> with a unique design and semitransparent blue appearance is presented. These modules are implemented in a solar tree installation at the German pavilion in the EXPO2015 in Milan/IT. The modules show power conversion efficiencies of 4.5% and are produced exclusively using standard printing techniques for large-scale production.