Dye-sensitized solar cells, metal complexes for the same, and ligands therefor
申请人:Solvay SA
公开号:EP2801991A1
公开(公告)日:2014-11-12
Provided are dye-sensitized solar cells, comprising a metal complex at least comprising a particular bidentate ligand, as a sensitizing-dye, and a cobalt complex, as a redox mediator. The present invention also concerns metal complex dyes for the same, and ligands therefor.
because of the poor compatibility between the ruthenium(II) sensitizer and the cobalt redox species. To address this problem and achieve higher power conversion efficiencies (PCEs), we introduce here six new cyclometalated ruthenium(II)-based dyes developed through ligand engineering. We tested DSCs employing these ruthenium(II) complexes and achieved PCEs of up to 9.4% using cobalt(3+/2+)-based electrolytes
Towards Compatibility between Ruthenium Sensitizers and Cobalt Electrolytes in Dye-Sensitized Solar Cells
作者:Lauren E. Polander、Aswani Yella、Basile F. E. Curchod、Negar Ashari Astani、Joël Teuscher、Rosario Scopelliti、Peng Gao、Simon Mathew、Jacques-E. Moser、Ivano Tavernelli、Ursula Rothlisberger、Michael Grätzel、Md. Khaja Nazeeruddin、Julien Frey
DOI:10.1002/anie.201304608
日期:2013.8.12
Ruthenium and Co: Ruthenium(II) complexes remain prime candidates for dye‐sensitizedsolar applications; however, current ruthenium sensitizers are not compatible with cobalt(II/III) electrolytes. Herein, the effect of surface insulation on device efficiency is studied by comparing two cyclometalated tris‐heteroleptic ruthenium(II) complexes. This approach demonstrates a general principle that leads