Effect of the fibrillar microstructure on the efficiency of high molecular weight diketopyrrolopyrrole-based polymer solar cells.

Authors :: Li W
Hendriks KH
Furlan A
Roelofs WS
Meskers SC
Wienk MM
Janssen RA
Source :: Advanced materials (Deerfield Beach, Fla.) [Adv Mater] 2014 Mar 12; Vol. 26 (10), pp. 1565-70. Date of Electronic Publication: 2013 Nov 29.
Publication Year :: 2014
Abstract: The nature of the solubilizing alkyl side chains has a strong effect on the performance of semiconducting diketopyrrolopyrrole polymers in organic solar cells with fullerene acceptors. The effect relates to the width of semicrystalline polymer fibrils that form in these blends. If the width of the fibril is wider than the exciton diffusion length, fewer charges form and the efficiency drops.<br /> (© 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.)

Full Text Access

Tools