Synthesis and characterization of a wide bandgap polymer based on a weak donor-weak acceptor structure for dual applications in organic solar cells and organic photodetectors

The WD-WA structure is advantageous to realize the wide bandgap polymers (∼2.0 eV) showing high Voc values in organic solar cells. The electron withdrawing fluorine and electron donating alkoxy units in the WD-WA structure play a crucial role in forming planar backbone structures, maintaining the high responsivity in organic photodetectors even at a thickness of 470 nm.306