A layered hybrid rare-earth double-perovskite-type molecule-based compound with electrical and optical response properties

Abstract

A layered hybrid rare-earth double perovskite-type molecule-based compound (3HQ)4[RbEu(NO3)8] (3HQ = 3-Quinuclidinone cation, 1) was synthesized. It undergoes a reversible phase transition and switchable dielectric constant behavior above room temperature...

The Role of Fluorine-Substituted Positions on the Phase Transition in Organic–Inorganic Hybrid Perovskite Compounds

“…Perovskites exhibit a variety of amazing physical properties due to their diverse composition and structure, such as a phase transition, dielectricity, piezoelectricity, superconductivity, and catalysis. − Therefore, perovskite compounds are one of the current hot spots in the field of material sciences. − Especially, organic–inorganic hybrid perovskites (OIHPs) have attracted tremendous research interest because of their extraordinary electronic and optical properties . In comparison with the traditional inorganic perovskites with simple and rigid structures, the OIHPs have remarkable structural diversity and controllable physical properties, which makes it possible to engender inexhaustible applications in the fields of microelectronics, energy storage, photovoltaics, etc. − From an application point of view, OIHPs with a high phase transition temperature ( T c ) are particularly important for practical applications in the military, aerospace, and construction industries under severe high-temperature conditions. − …”

3D Perovskite (1,5-3.2.2-H2dabcn)CsBr3 with Reverse Symmetry Breaking

“…In the last few years, hybrid organic–inorganic perovskite (HOIP) materials have been widely applied in memory, capacitors, sensors, etc., − due to their excellent physical properties, such as dielectricity, second-order nonlinear optical properties, photoluminescence, piezoelectricity, and ferroelectricity. − Compared with the conventional inorganic perovskites, the structural variability and high tunability of HOIPs make them more promising functional materials. ,− At present, 3D lead- and tin-based hybrid perovskites have been deeply studied in solar cells, but the toxicity of lead and tin ions limits the practical application of this kind of perovskite in a large scale. , Therefore, it is necessary to find new metal skeletons to replace the toxic lead–tin metal skeletons and assemble them into new 3D structures, making them have broader application prospects.…”

Homochiral Chemistry Strategy To Trigger Dielectric Switching and Second-Harmonic Generation Response on Spirocyclic Derivatives

“…Switchable materials are undergoing relatively stable and reversible changes under the action of external stimuli such as thermal stimulation, light stimulation, and electric field. − Then, the physical properties of electricity, magnetism, or optics will be induced to produce bistable “ON” and “OFF” states . For the important applications in data communication, signal processing, environmental monitoring, storage, sensors, and other fields, stimulus-responsive materials have been explored to design single materials with multiple stimuli responsiveness as a research hotspot. − However, there is still a challenge to construct materials with excellent properties of a dielectric response and a nonlinear optical response. − The structure of organic–inorganic hybrid materials has satisfactory flexibility and adjustability. − Therefore, the construction of organic–inorganic hybrid structures provides an effective strategy for the design of multiresponsive materials. − Because of the breaking of symmetry or crystal structure changes at T c (phase transition point), the thermal and/or light stimulation is usually accompanied by dielectric and second-harmonic generation (SHG) responses.…”