Hybrid organic-inorganic perovskites: Polar properties and applications

Polarization-enhanced photoelectric performance in a molecular ferroelectric hexane-1,6-diammonium pentaiodobismuth (HDA-BiI5)-based solar device

“…Thus, it is extremely desired to explore more stable and efficient lead-free organic-inorganic hybrid compounds. 16 On the other hand, many recent studies have demonstrated that the polarity of organic-inorganic halide perovskites likely plays a signicant role in the excellent photovoltaic performance, 17,18 which is similar to the ferroelectric photovoltaic effects. Actually, since the abnormal photovoltaic effect with an impressively high voltage output, ferroelectrics with a narrow band gap (E g ) may have a bright future for solar-energy generation.…”

Recent Progress in the Nanoscale Evaluation of Piezoelectric and Ferroelectric Properties via Scanning Probe Microscopy

“…[136] In addition to conventional ferroelectric materials, organicinorganic hybrid perovskite (OIHP) materials, for example, methyl ammonium lead iodide (MAPbI 3 ), [34,36,[137][138][139][140][141][142][143] which have been typically studied for solar-cell applications owing to their anomalous photovoltaic effect, have been recently studied by PFM. [35,[144][145][146][147] Numerous studies have investigated the presence of ferroelectricity in OIHP materials using PFM; [36,[148][149][150][151][152] this is because their relatively higher photo-conversion efficiency as well as current-voltage (I-V) hysteresis can be associated with ferroelectricity owing to their perovskite crystal structures. [153][154][155][156] For instance, Kutes et al [152] reported as-grown ferroelectric domain Figure 4.…”

“…Simultaneously, the types of materials studied have expanded from oxides to transition metal dichalcogenides (TMDs), [22][23][24] organics, [27,28] biological materials, [29][30][31][32][33] and hybrid materials. [34][35][36] Because some of these materials exhibit relatively weaker piezoelectric and ferroelectric properties, their properties cannot be easily observed using macroscopic techniques.…”

Syntheses and crystal structures of a new family of hybrid perovskites: C5H14N2·ABr3·0.5H2O (A= K, Rb, Cs)

“…'Hybrid' RMX 3 perovskites containing both inorganic and organic (molecular) components have been studied intensively in the last few years due to their remarkable photovoltaic and other optical properties (Xu et al, 2019;Stylianakis et al, 2019;Zuo et al, 2019). The R + or R 2+ organic cation replaces the metallic A cation in an oxide perovskite and the MX 3 (X = halide) octahedral network replaces the BO 3 component of an oxide perovskite.…”