Abstract

AbstractHybrid halide perovskites (HP) have emerged in the last decade as a new class of semiconductors with superior performances in photovoltaic and electronic devices. The literature about these halide semiconductors is abundant and a lot of names/expressions are used to define networks, structures, or materials. In this context, there is a need to offer some discussions about the relevance of using the word “perovskite” and the associated expressions (“RP” (Ruddlesden–Popper), “DJ” (Dion–Jacobson), “ACI” (alternating cations in the interlayer space), “hexagonal perovskites”, “hollow perovskites”, “d‐HP” (deficient 3D HP),…). Moreover, the description of perovskite networks through elimination/substitution processes from the ABX3 structure will be compared to the known dimensional reduction concept.

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