A solvent-free, SeCN-/(SeCN)3- based ionic liquid electrolyte for high-efficiency dye-sensitized nanocrystalline solar cells

Peng Wang; Shaik M Zakeeruddin; Jacques-E Moser; Robin Humphry-Baker; Michael Grätzel

doi:10.1021/ja048472r

A solvent-free, SeCN-/(SeCN)3- based ionic liquid electrolyte for high-efficiency dye-sensitized nanocrystalline solar cells

J Am Chem Soc. 2004 Jun 16;126(23):7164-5. doi: 10.1021/ja048472r.

Authors

Peng Wang¹, Shaik M Zakeeruddin, Jacques-E Moser, Robin Humphry-Baker, Michael Grätzel

Affiliation

¹ Laboratory for Photonics & Interfaces, Swiss Federal Institute of Technology, CH 1015 Lausanne, Switzerland.

PMID: 15186139
DOI: 10.1021/ja048472r

Abstract

A solvent-free ionic liquid electrolyte based on the SeCN-/(SeCN)3- redox couple has been employed for high-efficiency dye-sensitized nanocrystalline solar cells. For the first time an alternative redox couple has been identified to rival and even exceed the performance of the iodide/triiodide couple even at full sunlight. Unprecedented 7.5-8.3% power conversion efficiencies under AM 1.5 sunlight have been achieved for photovoltaic devices with solvent-free ionic liquid electrolytes.