Efficient organic tandem cell combining a solid state dye-sensitized and a vacuum deposited bulk heterojunction solar cell

In this letter, we report on an efficient organic tandem solar cell combining a solid state dye-sensitized with a ZnPc/C60ZnPc/C60-based, vacuum deposited bulk heterojunction solar cell. Due to an effective serial connection of both subcells and to the complementary absorption of the dyes used, a power conversion efficiency of ηp=(6.0±0.1ηp=(6.0±0.1)% was achieved under simulated 100mW/cm2 AM 1.5 illumination. The device parameters are Voc=(1360±10)mV, Isc=(8.2±0.1)mA/cm2 and FF=(54±1)%FF=(54±1)%.