(D-π-)2D-π-A-Type Organic Dyes for Efficient Dye-Sensitized Solar Cells

Double anchor indolo[3,2-b]indole-derived metal-free dyes with extra electron donors as efficient sensitizers for dye-sensitized solar cells

New di-acceptors organic dye with extra electron donors shows an enhanced PCE of 7.86% comparing to parent one.

Efficient organic dyes based on perpendicular 6,12-diphenyl substituted indolo[3,2-b]carbazole donor

Three novel indolo[3,2-b]carbazole-based dyes have been designed and synthesized using a 6,12-diphenyl substituted indolo[3,2-b]carbazole core as a π-conjugated donor, a thiophene cyanoacrylic acid moiety as electron acceptor and anchoring group, together with triphenylamine, 3,4,5-trimethoxybenzene and bromine as a second donor group. The photophysical and electrochemical properties of the dyes have been investigated by UV spectroscopy and cyclic voltammetry (CV). Our study indicates that the second donor plays the important role of improving dye aggregation as well as tuning the photoelectronic properties. These indolo[3,2-b]carbazole based dyes show good performances with high V_oc of 0.75 V, FF of 0.72, and a moderate PCE of 3.11% under AM 1.5 irradiation.

Effect of structural manipulation in hetero-tri-aryl amine donor-based D–A′–π–A sensitizers in dye-sensitized solar cells

Modification of a triarylamine donor group along with variation in the anchoring groups could finely manipulate the photophysical property and tuning the behaviour of D–A′–π–A sensitizers in DSSCs for better efficiency achievement.