Related Experiment Video
Updated: Jun 19, 2026
08:30
Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells
Published on: March 19, 2017
17.1K
Bulk Synthesis of Phase-Pure Ruddlesden-Popper Phase Perovskites via Iodide-Mediated Mechanochemistry
Xin Sheng1,2, Yahui Li2, Xiaohe Miao3
1School of Materials Science & Engineering, Zhejiang University, Hangzhou, China.
Small (Weinheim an Der Bergstrasse, Germany)
|January 15, 2026
Summary
We developed a scalable synthesis for phase-pure Ruddlesden-Popper (RP) perovskites using iodide-mediated grinding. This method enables gram-scale production of quantum-well perovskites for advanced optoelectronic applications.
Area of Science:
- Materials Science
- Solid State Chemistry
- Nanotechnology
Background:
- Ruddlesden-Popper (RP) perovskites exhibit promising optoelectronic properties.
- Challenges include controlling phase purity, processability, and scalable synthesis.
Purpose of the Study:
- To overcome limitations in RP perovskite synthesis.
- To enable gram-scale production of phase-pure quantum-well perovskites.
- To facilitate scalable processing and integration for optoelectronics.
Main Methods:
- Iodide-mediated liquid-assisted grinding (LAG) for mechanochemical synthesis.
- Hydroiodic acid (HI) introduction for kinetic acceleration and ionic incorporation.
- Spark plasma sintering (SPS) for bulk monolith consolidation.
- Screen printing for conformal coatings on diverse substrates.
Main Results:
- Gram-scale synthesis of phase-pure quantum-well perovskites (n=1-4) with >98% phase fidelity.
- Monophase crystal formation (0.1-5 µm) driven by stoichiometry-directed assembly.
- Scalable consolidation into centimeter-scale bulk monoliths via SPS.
- Facilitation of heterogeneous integration with 3D perovskites.
Conclusions:
- Established a platform for deterministic quantum-well design in RP perovskites.
- Unlocked scalable production and processing of 2D perovskites.
- Enabled advanced optoelectronic device fabrication through heterogeneous integration.
Keywords:
Ruddlesden‐Popper phase perovskitesmechanochemistryphase purityprocessibilityquantum‐well thicknessMore Related Videos
08:12Low Pressure Vapor-assisted Solution Process for Tunable Band Gap Pinhole-free Methylammonium Lead Halide Perovskite Films
Published on: September 8, 2017
10.0K
04:14Facile Synthesis of Colloidal Lead Halide Perovskite Nanoplatelets via Ligand-Assisted Reprecipitation
Published on: October 1, 2019
13.6K
Related Concept Videos
02:44Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide
Alkenes are converted to 1,2-diols or glycols through a process called dihydroxylation. It involves the addition of two hydroxyl groups across the double bond with two different stereochemical approaches, namely anti and syn. Dihydroxylation using osmium tetroxide progresses with syn stereochemistry.
01:12Precipitation Processes
The experimental conditions in a gravimetric analysis should be optimized to maximize the particle size and purity of the obtained precipitate. Ideally, the concentration of the precipitating reagent should be low with effective stirring to maintain low relative supersaturation for the growth of large crystals. In homogeneous precipitation, the precipitant is slowly generated by a chemical reaction in the solution to avoid local reagent excesses. For example, urea decomposes gradually to...
00:52Washing, Drying, and Ignition of Precipitates
After filtration, the precipitate is washed to remove coprecipitated impurities and any remaining mother liquor. Colloidal precipitates, such as silver chloride, are washed with an electrolyte (such as dilute nitric acid) to prevent the peptization of the precipitate. In the case of slightly soluble precipitates, the wash solution contains a common ion to reduce solubility. Lead sulfate, which is slightly soluble in water, is washed with dilute sulfuric acid. Similarly, wash solutions may be...
01:17Precipitation and Co-precipitation
Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...
00:56Extraction: Advanced Methods
Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is formed in...
01:22Heterogeneous Catalysis
Heterogeneous catalysis involves a catalyst in a different phase from the reactants. It is a process where the catalyst and the reactants are in distinct phases, typically solid and gas or liquid.Most heterogeneous catalysts are metals, metal oxides, or acids. The list includes transition metals like iron (Fe), cobalt (Co), nickel (Ni), palladium (Pd), platinum (Pt), chromium (Cr), manganese (Mn), tungsten (W), silver (Ag), and copper (Cu). These metals possess partially vacant d orbitals that...