Olivia P. Lee

TL;DR: PDPP2FT is used to demonstrate that linear alkyl side chains can be used to promote thin-film nanostructural order and increase the correlation lengths of both π-π stacking and lamellar spacing, leading to a substantial increase in the efficiency of bulk heterojunction solar cells.

TL;DR: The design, synthesis, and characterization of the first examples of furan-containing low band-gap polymers, PDPP2FT and PDPF3F, with substantial power conversion efficiencies in organic solar cells are reported.

TL;DR: This work has shown that attaching C2-pyrene as the small molecule end-group to a diketopyrrolopyrrole core leads to materials with a tight, aligned crystal packing and favorable morphology dictated by π-π interactions, resulting in high power conversion efficiencies and high fill factors.

TL;DR: In this paper, the authors investigated the influence of backbone coplanarity on a polymer's preference to pack face-on or edge-on relative to the substrate, and found that increasing backbone co-lanarity, supported by density functional theory (DFT) calculations of representative trimers, leads to the narrowing of polymer band gaps as characterized by ultraviolet-visible-near infrared spectroscopy and cyclic voltammetry.

TL;DR: Analysis of furan-containing diketopyrrolopyrrole polymers synthesized with similar optoelectronic properties reveal that less soluble polymers with linear side chains exhibit larger crystalline domains, pack considerably more closely, and align with a greater preference for in-plane π-π packing.