{Stable|Steady} dinitrile end-capped closed-shell non-quinodimethane as donor, acceptor and additive of organic solar cells
Non-fullerene acceptors exhibit {great|fantastic|excellent|wonderful|good|terrific} {potential|possible|prospective} {to improve|to enhance} photovoltaic performances of organic solar cells. {However|Nevertheless|Nonetheless|Even so|On the other hand|Having said that}, {it is|it’s|it really is|it truly is|it can be|it is…