Abstract Phenethylammonium (PEA+) and butylammonium (BA+) are widely used in three-
dimensional (3D) perovskites to form two-dimensional perovskites at film surfaces and grain …

Interface passivation using an ammonium salt can effectively improve the power conversion
efficiency (PCE) of perovskite solar cells (PSCs). Despite significant PCE improvement …

Perovskite solar cells (PSCs) are regarded as the most promising new generation of green
energy technology due to their outstanding device performance and simple processing …

Interfacial treatments with bulky cations over 3D lead halide perovskites (LHPs) have
enabled power conversion efficiencies beyond 25%. However, the mechanisms behind …

The environmental stability of hybrid organic–inorganic perovskite (HOIP) materials needs to
increase to enable their widespread adoption in thin-film solar and optoelectronic devices …

Perovskite solar cells (PSCs) are prominent devices that have attracted much attention in
future photovoltaic technology. It has been investigated that adding organic spacers to PSCs …

Surface treatment of perovskite materials with their layered counterparts has become an
ubiquitous strategy for maximizing device performance. While layered materials confer great …

The motion of electrons and nuclei, or of charge carriers and lattice, respectively, in a solid
system, are the most fundamental dynamics in nature. Understanding the ultrafast behavior …