Star-shape non-fullerene acceptor featuring an aza-triangulene core for organic solar cells.

ABSTRACT: We present the simple synthesis of a star-shape non-fullerene acceptor (NFA) for application in organic solar cells. This NFA possesses a D(A)₃ structure in which the electron-donating core is an aza-triangulene unit and we report the first crystal structure for a star shape NFA based on this motive. We fully characterized this molecule's optoelectronic properties in solution and thin films, investigating its photovoltaic properties when blended with PTB7-Th as the electron donor component. We demonstrate that the aza-triangulene core leads to a strong absorption in the visible range with an absorption edge going from 700 nm in solution to above 850 nm in the solid state. The transport properties of the pristine molecule were investigated in field effect transistors (OFETs) and

SUBMITTER: Kervella Y 

PROVIDER: S-EPMC10286219 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature