Nitro group as a new anchoring group for organic dyes in dye-sensitized solar cells.

Abstract

An organic dye JY1 bearing a nitro group was designed, synthesized and applied in DSCs. An unusual colour change was observed when the voltage applied to the device was reversed which was accompanied by a five-fold increase in the cell efficiency. We propose that applying a bias enabled the attachment of nitro groups to the TiO(2) surface. 
DOI: 10.1039/c2cc31516e