What is the basic concepts and structural characteristics of two-dimensional organic halide perovskite materials?
Best insight from top research papers
Two-dimensional (2D) organic halide perovskite materials have gained significant attention due to their unique properties and potential applications in optoelectronics. These materials are characterized by their high stability and structural tunability, which is achieved by reducing the dimensions of perovskites and introducing long organic chains . The incorporation of bulky organic cations enhances the stability and structural diversity of these materials, allowing for improved tuneability and photophysical properties . The crystal structure of 2D perovskites consists of inorganic layers sandwiched between organic layers, forming a layered structure . The synthesis strategies for these materials involve the self-assembly of organic and inorganic components, leading to the formation of 2D hybrid structures . In recent years, there has been a focus on developing lead-free 2D halide perovskites to address environmental concerns . These lead-free materials have favorable stability and unique photoelectric properties, making them promising for future commercial applications .
Answers from top 5 papers
More filters
| Papers (5) | Insight |
|---|---|
60 Citations | The basic concepts and structural characteristics of two-dimensional organic halide perovskite materials are discussed in the paper. |
15 Feb 2021 9 Citations | The basic concepts of two-dimensional organic halide perovskite materials include improved stability and structural diversity compared to three-dimensional perovskites. The incorporation of bulky organic cations provides greater stability and expands the field of hybrid semiconducting materials. |
| The basic concepts and structural characteristics of two-dimensional organic halide perovskite materials are discussed in the paper. | |
9 Citations | Two-dimensional organic halide perovskite materials have exceptional structural tunability, optical and electronic properties, and environmental stability. |
9 Citations | The paper discusses the basic structure and classification of two-dimensional (2D) organic halide perovskite materials and their characteristics and performances with a variation in the number of inorganic layers. |
Related Questions
What are some characteristics of two dimensional materials?4 answersTwo-dimensional (2D) materials have several characteristics that make them unique and desirable for various applications. These materials have high anisotropy, effective surface area, mechanical strength, plasmonic properties, electron confinement, and optical properties. They can be tuned to exhibit different electrical behaviors, ranging from superconductors to insulators. 2D materials also have tunable bandgaps, excellent electron mobility, and high light absorption capacity, making them suitable for optoelectronic and electronic devices. Additionally, they possess properties such as tunable bandgaps, high mobility in the energy bandgap, third-order nonlinearity, and nonlinear absorption, which are advantageous for optical applications. The synthesis of high-quality 2D materials is crucial, as their structure, morphology, chemistry, thickness, and surface area directly influence their properties. Furthermore, the design and aggregation process optimization of 2D materials have been investigated to meet practical needs and enhance their characteristic properties. Overall, 2D materials offer a wide range of electrical, photonic, mechanical, and chemical properties, making them suitable for various applications.
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 the current challenges of two dimensional ferroelectric materials?5 answersThe current challenges of two-dimensional (2D) ferroelectric materials include the need for experimental validation and the discovery of new 2D ferroelectrics. While there have been many theoretical works on potential 2D ferroelectric materials, experimental confirmation is still lacking, and there are likely many more 2D ferroelectrics waiting to be discovered. Additionally, the unique properties of 2D ferroelectrics, such as their size and surface effects, present intrinsic and extrinsic challenges. Understanding the origins of 2D ferroelectricity and developing characterization methods are ongoing areas of research. Furthermore, the controlled synthesis of 2D nanosheets, particularly for simple perovskite oxides, remains a challenge. Overcoming these challenges will be crucial for the development of 2D ferroelectric materials and their potential applications in future electronics.
What could be 2D perovskite solar cells spacers?3 answersAromatic spacers, such as bulky organic spacers with high dielectric constant, have the potential to be used as spacers in 2D perovskite solar cells (PSCs) to improve their performance. Short-chain alkylmethylammonium (MA) and formamidinium (FA) organic cations can also be used as interlayer spacers among perovskite layers in 2D perovskites to enhance their efficiency. Additionally, a tailored spacer molecule, 4-hydroxy-phenylethylamine iodide (OH-PEAI), has been developed for high-performance 2D/3D PSCs, which significantly reduces defect density and mitigates nonradiative recombination. The choice of organic spacer cations is crucial for improving the crystallinity and crystal orientation of quasi-2D perovskites, leading to high power conversion efficiency (PCE). The poor charge transport of 2D perovskites can be addressed by proper design of organic spacer cations, which is a key issue affecting their performance.
What are the potential applications of two-dimensional organic halide perovskites with ferroelectric phase transition?5 answersTwo-dimensional organic halide perovskites with ferroelectric phase transition have potential applications in ferroelectric photovoltaics, self-powered photodetection, and X-ray detection. These materials display natural advantages such as structural softness, low weight, and easy processing, making them highly desirable for applications pursuing miniaturization and flexibility. The ferroelectric properties of these perovskites enable their use in mechanical energy harvesters (MEHs) for converting ambient mechanical energy into electrical energy. They have been extensively studied for use in piezoelectric and triboelectric nanogenerators. Additionally, two-dimensional lead halide perovskites, which are a type of organic halide perovskite, have tunable properties and are promising materials for optoelectronics. Their crystal structure can be predicted using an algorithm, allowing for theoretical studies and high-throughput virtual screening.
What are the effects of two-dimensional organic halide perovskite ferroelectric phase transition on the properties of materials?3 answersThe effects of two-dimensional organic halide perovskite ferroelectric phase transition on the properties of materials are discussed in the provided abstracts. The phase transition from centrosymmetric to polar chiral or tetragonal structures leads to symmetry breaking and significant changes in the properties of the materials. The transition of photogenerated carriers from the valence band to the conduction band plays a decisive role in the light-induced phase transition of CsPbBr3 perovskite materials, leading to changes in the lattice structure and expansion of the lattice. The reduction from three- to two-dimensions of organic-inorganic halide perovskites allows for tunable bandgaps and high absorption coefficients in the visible spectrum, making them promising for nano-optoelectronic devices and photovoltaics. These findings highlight the potential for diverse functional properties and the design of new phase transitions in hybrid halide perovskites.