Interfacial engineering is the key to high-performance perovskite solar cells (PSCs). While a wide range of fullerene interlayers are investigated for Pb-based counterparts with bandgap >1.5 eV, role barely in Sn-Pb mixed narrow-bandgap (NBG) PSCs. In this work, two novel solution-processed derivatives investigated, namely indene-C60-propionic acid butyl ester and hexyl (IPH), as NBG It found t...

The donor/acceptor interface properties play vital roles not only for singlet exciton dissociation but also to suppress the free charge recombination enabling state-of-the-art device fill factors (FFs).

Due to their exceptional photovoltaic properties, metal halide perovskites (MHPs) are extensively studied for potential applications in solar cells. In recent years, the power conversion efficiencies of MHPs-based cells rapidly increased from initial few \% towards more than 25\,\% single-junction devices. Therefore, also taking into account low costs and ease manufacturing, have become fastest...

We report upon an analysis of the vibrational modes that couple and drive the state-to-state electronic transfer branching ratios in a model donor-bridge-acceptor system consisting of a phenothiazine-based donor linked to a naphthalene-monoimide acceptor via a platinum-acetylide bridging unit. Our analysis is based upon an iterative Lanczos search algorithm that finds superpositions of vibronic...