FeSe₂ films with controllable morphologies as efficient counter electrodes for dye-sensitized solar cells

Abstract

The FeSe2 films with controllable morphologies (including 3D flower-like and sphere-shaped) have been applied as the counter electrodes (CEs) for dye-sensitized solar cells (DSSCs). It is found that 3D flower-like FeSe2 CEs perform comparably to conventional platinum CEs (power conversion efficiencies of 8.00 and 7.87%, respectively).