Gravure printing inverted organic solar cells: The influence of ink properties on film quality and device performance - Voigt,MM; Mackenzie,RCI; King,SP; Yau,CP; Atienzar,P; Dane,J; Keivanidis,PE; Zadrazil,I; Bradley,DDC; Nelson,J (SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2012)