Structural diversity of low-dimensional hybrid organic-inorganic perovskites

Over the past decade, hybrid organic-inorganic perovskites (HOIPs) have received significant attention because of their extraordinary properties as active layer in perovskite solar cells (PSC). HOIPs can be prepared with their inorganic frameworks spanning the whole range of dimensionalities: 3D, 2D, 1D and 0D. 2D HOIPs are currently receiving increased attention because of their generally enhanced material stability compared to their 3D counterparts and their much higher degree of compositional flexibility. However, the current research on low-dimensional HOIPs is still in its infancy and a deep fundamental understanding and control over triggers of the crystal growth mechanism acting in low-dimensional HOIP formation is still lacking.