A Novel Dopant‐Free Triphenylamine Based Molecular “Butterfly” Hole‐Transport Material for Highly Efficient and Stable Perovskite Solar Cells

Abstract

A triphenylamine based molecular “butterfly” is developed as dopant-free hole-transport material for perovskite solar cells exhibiting excellent power conversion efficiency of 16.3% which is comparable to the state-of-the-art doped 2,2′,7,7′-tetrakis(N,N′-di-p-methoxy-phenylamine)-9,9′-spirobifluorene (spiro-OMeTAD). Moreover, the device is much more stable than that of spiro-OMeTAD based device under light irradiation. As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.