Dye-sensitized solar cell (DSC) is a new type of photovoltaic cell. To further improve the energy conversion efficiency of DSCs, one method is broadening the absorption spectra and improving the utilization ratio of light. In this paper, three types of tandem DSCs and a new type of hybrid DSC prepared by a film-transfer technique were investigated. The superposition character of tandem DSCs and the influencing factors of the efficiencies of the top and bottom cells in different structure were systematically studied. Then, we investigated the superposition character of hybrid DSC and the mechanism on VOC. The results show that the hybrid structure can achieve a panchromatic response. The superposition of IPCE and JSC were confirmed. The high efficiency of 11.05% was achieved. The high VOC of hybrid DSC was correlated to the different degree of back reactions at the TiO₂/dye/electrolyte interface. The highest efficiency of hybrid DSC was achieved when compared with tandem DSC and co-sensitized DSC under the same conditions.

Key words: hybrid, film-transfer, dye-sensitized, solar cell, mechanism, tandem