Hot‐Electron Injection in a Sandwiched TiO_x–Au–TiO_x Structure for High‐Performance Planar Perovskite Solar Cells

A unique sandwiched structure of TiOx/Au-NPs/TiOx is used to improve the charge transport properties of a TiOx film via plasmonic-mediated hot carrier injection at the metal-semiconductor Schottky junction. The injected carrier helps to fill trap states and to further decrease the Fermi level of TiOx. The combined effects dramatically enhance the perovskite solar cell performance, with a power conversion efficiency of 16.2%. 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.