One step to perylene monoimides and derived alkynyl bridged photovoltaic acceptors

Phenylene‐Bridged Perylene Monoimides as Acceptors for Organic Solar Cells: A Study on the Structure–Property Relationship

“…[22] The group of Ma introduced alkynyl linkers and also reached roughly 1 % in solar cell devices (PBDB-T as donor). [23] Using alkylated fluorene as linker and P3HT as donor polymer, a PCE above 2 % was reported by the group of Cheng, [24] while the group of Li reported efficiency values of up to 6.0 % and an impressive V OC of 1.3 V after replacing the donor polymer with PTZ1. [25] In our own recent work, three different linker molecules based on fluorene, carbazole and silafluorene were investigated.…”

“…Solar cell devices reached a maximum of 0.2 %, albeit here the fullerene derivative PCBM was used as acceptor [22] . The group of Ma introduced alkynyl linkers and also reached roughly 1 % in solar cell devices (PBDB‐T as donor) [23] . Using alkylated fluorene as linker and P3HT as donor polymer, a PCE above 2 % was reported by the group of Cheng, [24] while the group of Li reported efficiency values of up to 6.0 % and an impressive V OC of 1.3 V after replacing the donor polymer with PTZ1 [25] …”

Comparison of fluorene, silafluorene and carbazole as linkers in perylene monoimide based non-fullerene acceptors

“…using alkinyl, thiophene or fluorene linkers). [33][34][35][36][37][38] In the case of electron rich linkers, this results in an acceptor-donor-acceptor structure, a structure realized in most of the high efficient NFAs such as Y6 or BTP-4X. Recently, Zhang et al demonstrated that a simple fluorene linker, combined with perylene monoimide electron withdrawing groups, reaches in combination with PTZ1 PCEs up to 6%.…”

Perylene Monoimide Dimers Enhance Ternary Organic Solar Cells Efficiency by Induced D–A Crystallinity

“…The film of PMIA-1 exhibits a red-shifted absorption profile compared to PMIA-0, which could be attributed to the extended π-conjugation and decreased steric hindrance between two bulky perylene rings. The red-shifted absorption of PMIA-1 relative to PMIA-2 should be due to a stronger interchain π–π stacking effect and this could find direct evidence from temperature-dependent UV–vis absorption spectra . However, the PMIA-1 based device performance was very poor in either the binary or ternary system.…”