Two Redox Couples are Better Than One: Improved Current and Fill Factor from Cobalt‐Based Electrolytes in Dye‐Sensitized Solar Cells | Zendy

Cong Jiayan | Zendy; Hao Yan | Zendy; Sun Licheng | Zendy; Kloo Lars | Zendy

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Two Redox Couples are Better Than One: Improved Current and Fill Factor from Cobalt‐Based Electrolytes in Dye‐Sensitized Solar Cells

Author(s) -

Cong Jiayan,

Hao Yan,

Sun Licheng,

Kloo Lars

Publication year - 2014

Publication title -

advanced energy materials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 10.08

H-Index - 220

eISSN - 1614-6840

pISSN - 1614-6832

DOI - 10.1002/aenm.201301273

Subject(s) - cobalt , dye sensitized solar cell , redox , electrolyte , materials science , energy conversion efficiency , electrode , auxiliary electrode , inorganic chemistry , chemical engineering , nanotechnology , chemistry , optoelectronics , metallurgy , engineering

A tandem redox strategy is used in cobalt‐based electrolytes . Co(bpy) 3 2+ /Co(bpy) 3 3+ offers a high photovoltage at the photoanode, whereas the I − /I 3 − or Fc/Fc + redox couples facilitate charge transfer at the counter electrode. Electron exchange in the electrolyte offers beneficial concentration gradients. The overall conversion efficiency is improved from 6.5% to 7.5%.

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