Are perovskites semiconductors?
Answers from top 8 papers
More filters
| Papers (8) | Insight |
|---|---|
27 Citations | Thus, evaluation of the organic/inorganic variation effects provides an understanding of self-doping in mixed perovskites and is beneficial to pursue high-performance perovskite devices. |
| Our results have implications not only for the fundamental crystal chemistry of the perovskites but also for the discovery of new functional materials. | |
61 Citations | These results are helpful for better understanding the optical properties of all-inorganic perovskites. Perovskite-based optoelectronics are expected to become an important component of devices such as solar cells and light-emitting diodes. |
| These results elucidate the role of volume and interface defects in state-of-the-art hybrid perovskite semiconductors. | |
26 Citations | These findings help better understand the electronic structure of hybrid organic–inorganic perovskites and provide guidance for the improvement of the PSC performance and other electronic applications of perovskites. |
35 Citations | This finding will add to the growing fundamental physical understanding of perovskites, which is of great interest due to their applications in photovoltaics and other fields. |
49 Citations | These results suggest a great potential of these germanium-based 2D hybrid perovskites in the optoelectronic applications. |
215 Citations | Some of our novel perovskites exhibit promising properties for applications. |
Related Questions
What is perovskites?5 answersPerovskites are a class of materials with a crystal structure similar to the mineral perovskite, calcium titanate (CaTiO3). They have the general formula ABO3, where A and B are cations located at the corner and body center of the cubic structure, respectively. Perovskite materials have been extensively studied due to their various properties, including dielectric, piezoelectric, pyroelectric, ferroelectric, magnetic, superconductive, and multiferroic. The properties of perovskite materials are influenced by their structure and composition, with suitable ions playing a crucial role. Perovskites have found applications in energy storage, energy conversion, pollutant degradation, optoelectronics, and various other areas. They are used in devices such as half-metallic ferromagnetic devices, spintronics, LEDs, photodetectors, and solar energy conversion systems. Different synthesis methods have been developed for perovskite materials, depending on their dimensions and properties.
Main importance of perovskite?5 answersPerovskite materials have gained importance due to their multifaceted nature and wide range of applications in energy conversion and storage devices. They exhibit a variety of electrical, optical, and electronic properties, making them suitable for fuel cells, lithium batteries, supercapacitors, LEDs, and solar cells. The atomic level structure of perovskites plays a crucial role in determining their efficiency in various applications. Perovskites can accommodate a large number of metallic elements, allowing for various combinations and substitutions of cations, resulting in enhanced properties. These materials have been extensively explored for their magnetic, optical, catalytic, and electrical properties, and have shown promise in environmental pollution control, sensing, and adsorption applications. Additionally, perovskite materials have attracted research interest due to their excellent optoelectronic properties, and deep insights into their crystal structure, electronic structure, and properties are important for the development of new functional materials and high-performance devices.
What is perovskite compound?5 answersPerovskite compound is a class of materials that has shown promising performance in various areas such as energy, catalysis, and semiconductors. It is characterized by its perovskite crystal structure, which consists of components A, B, and X. Component A is a monovalent cation located at the vertexes of a hexahedron centered by component B, while component X is located at the vertexes of an octahedron centered by component B. Component B is a metal ion, and it can be a lead ion or a divalent or trivalent metal ion. Perovskite compounds have been studied using machine learning techniques to explore new materials and predict their properties. They have also been investigated for their luminescence properties and have been found to have high luminescence intensity. Additionally, perovskite compounds can be formulated as solutions that include metal halides, organic halides, and elemental sulfur, which contribute to their stability over time. Furthermore, perovskite compounds can contain organic cations, metal cations, and non-metal anions, and they have demonstrated excellent power conversion efficiency and improved stability with respect to heat and moisture.
What are perovskite solar cells?5 answersPerovskite solar cells (PSCs) are a type of solar cell that convert sunlight into electricity. They are made using a perovskite structure, which is a hybrid organic-inorganic lead or tin halide-based material. PSCs have gained attention due to their high efficiency, flexibility, and low-cost production. They have the potential to replace traditional solar cells and offer higher conversion efficiency at lower costs. PSCs can be used in tandem solar cell designs, where they are combined with other types of solar cells to achieve even higher power conversion efficiency. The efficiency of PSCs has rapidly improved over the years, reaching up to 25.2% for single-junction cells. However, there are challenges to overcome, such as stability in ambient conditions and the toxicity of lead. Research is ongoing to address these drawbacks and commercialize PSCs.
Why Are There So Few Perovskite Ferroelectrics?5 answersThere are few perovskite ferroelectrics due to the role of octahedral rotations and cation displacements in suppressing ferroelectricity in these materials. The majority of perovskite materials have a nonpolar structure, limiting their ferroelectric properties. However, recent studies have shown that non-polar structural distortions, such as tilts or rotations of the octahedra, can give rise to polar structures or ferroelectricity in certain families of layered perovskites. These distortions, known as the "trilinear coupling" or "hybrid improper" mechanism, provide a potential route for designing new ferroelectrics and materials with multifunctional properties. Further theoretical and experimental investigation is needed to fully understand and exploit this mechanism.
What is perovskite made out of?5 answers