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

Abstract

In this letter, we report on an efficient organic tandem solar cell combining a solid state dye-sensitized with a ZnPc / 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 ± 0.1)% was achieved under simulated 100 mW / cm2 AM 1.5 illumination. The device parameters are Voc = (1360 ± 10) mV, Isc = (8.2 ± 0.1) mA / cm2 and FF = (54 ± 1) %. © 2009 Elsevier B.V. All rights reserved.