Simply Complex: The Efficient Synthesis of an Intricate Molecular Acceptor for High-Performance Air-Processed and Air-Tested Fullerene-Free Organic Solar Cells

Seth Mcafee (1) , Sergey Dayneko (1) , Pierre Josse (2) , Philippe Blanchard (2) , Clément Cabanetos (2) , Gregory Welch (1)

1 Department of Chemistry, University of Calgary
2 MOLTECH-Anjou

A perylene diimide (PDI) flanked diketopyrrolopyrrole (DPP) π-conjugated small molecule has been synthesized through an efficient and sustainable direct heteroarylation protocol. When paired with the donor polymer PTB7-Th, air-processed and tested bulk-heterojunction (BHJ) organic solar cells (OSCs) achieved a high power conversion efficiency (PCE) of 5.6%. The new acceptor showed favorable morphological changes upon solvent vapor annealing leading to a near 3-fold increase in PCE. This result is among the best reported utilizing DPP-based acceptors in air-processed and tested OSCs. All solar cells exhibited good air and light stability over a 35-day evaluation period.

Domaines: Chimie

Seth Mcafee, Sergey Dayneko, Pierre Josse, Philippe Blanchard, Clément Cabanetos, et al.. Simply Complex: The Efficient Synthesis of an Intricate Molecular Acceptor for High-Performance Air-Processed and Air-Tested Fullerene-Free Organic Solar Cells. Chemistry of Materials, 2017, 29 (3), pp.1309-1314. ⟨10.1021/acs.chemmater.6b04862⟩. ⟨hal-02564166⟩