Linking morphology and performance of organic solar cells based on decacyclene triimide acceptors

Selecting a Donor Polymer for Realizing Favorable Morphology in Efficient Non‐fullerene Acceptor‐based Solar Cells

“…How to rationally select a polymer donor so as to get suitable phase separation with non‐fullerene acceptors is still a challenge in the studies of non‐fullerene‐based PSCs . As known, it is crucial to explore new photovoltaic materials and new methods that can lead to favorable morphologies.…”

“…Encouragingly, Facchetti et al reported a record power conversion efficiency (PCE) of ≈6.4% in polymer:polymer blend‐based PSCs, which demonstrated the great potential of fullerene‐free PSCs and significantly promoted the research in the field. Beyond polymers, a variety of non‐fullerene small molecules have been explored as alternatives to fullerene‐based acceptors in recent years, while most of them exhibited relatively poor photovoltaic performance in PSCs.…”

Meta-analysis: the molecular organization of non-fullerene acceptors

“…12 On the other hand, NFAs are characterised by highly anisotropic conjugated structures, and their two-dimensional geometry makes the molecular packing, domain orientation and blend morphology 19,20 crucial for the electron mobility, charge separation and charge collection at the electrodes. [21][22][23] Therefore, it is essential to study and understand the solid-state arrangement of NFA molecules to achieve better performing systems. Despite in many fields of organic electronics the influence of molecular packing on the charge transport properties have been extensively studied both theoretically and experimentally, 15,16,[24][25][26] in OPV this topic has started to draw the attention only recently.…”

Tridecacyclene: A Cyclic Tetramer of Acenaphthylene

“…[4] Furthermore, the ability of 1 to reversiblyaccept up to four electrons has provided motivation for itss tudy as an n-types emiconductor, [5] its use in organic photovoltaics, [6] and investigations of its ferromagnetism.…”