A novel family of six donor–acceptor type organic sensitizers for dye-sensitized solar cells (DSSCs) is reported. The dyes
have been designed to have outstanding light absorption properties in the visible range and being able to achieve high
photon-to-electrical current conversion for BIPV (building-integrated photovoltaic). Moreover, stability tests under illumination
at 1 Sun and 65 1C showed a great stability for some of the devices, with less than 6% decrease of power conversion
efficiency after 3000 hours. The differences in the performance of the six sensitizers under standard illumination
conditions can be correlated with the observed differences in the photo-induced transient photovoltage and in charge
extraction measurements. We report the use of one of the dyes for the fabrication of semi-transparent
solar modules showing an active area of 1400 cm2 and a power output of 10.5 W m-2