Management of Donor and Acceptor Building Blocks in Dopant‐Free Polymer Hole Transport Materials for High‐Performance Perovskite Solar Cells ...
The dominant hole transport material (HTM) in state-of-the-art perovskite solar cells (PSCs) is Spiro-OMeTAD, which needs to be doped using hydrophilic dopants to improve its hole mobility and conductivity, resulting …