Transparent Hole-Transporting Materials Containing Partially Oxygen-Bridged Triphenylamine Skeletons for Efficient Perovskite Solar Cells

摘要

Transparent organic semiconductors are desirable for organic optoelectronic devices. While electrical performance is often improved by increasing the p-conjugation length, the resulting red-shifted absorption profile typically leads to loss of transparency. Therefore, it is a great challenge to design and develop organic semiconductor materials that possess both high electrical performance and transparency in visible light region. We have previously developed promising transparent hole-transporting materials (HTMs) based on the quasiplanar skeletons of partially oxygen-bridged triphenylamines.