skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Colloidal Synthesis of Single-Layer Quasi-Ruddlesden–Popper Phase Bismuth-Based Two-Dimensional Perovskite Nanosheets with Controllable Optoelectronic Properties

Journal Article · · Chemistry of Materials
 [1];  [2]; ORCiD logo [3]
  1. Indiana Univ.-Purdue Univ. Indianapolis (IUPUI), Indianapolis, IN (United States)
  2. Argonne National Lab. (ANL), Argonne, IL (United States)
  3. Indiana Univ.-Purdue Univ. Indianapolis (IUPUI), Indianapolis, IN (United States); Indiana Univ.-Purdue Univ. Indianapolis (IUPUI), Indianapolis, IN (United States). Integrated Nanosystems Development Inst.

Single- and few-layered two-dimensional (2D) nanomaterials have attracted intense research interest in the last two decades due to their unique electronic and optoelectronic properties leading to various potential applications. Herein, we report the colloidal synthesis of Bi-based 2D perovskite nanosheets (PEG6-NH3+)nCs3-nBi2X9, where X = CI, Br, and I, through careful design of reaction conditions and selection of poly(ethylene glycol) (PEG6) surface passivating ligands. The 2D nanosheets are similar to 5 nm in thickness with micron-sized lateral dimensions and display composition-dependent band gap and work function modulation. Furthermore, small-angle X-ray scattering analysis substantiates that the individual inorganic crystal layer, Cs3-nBi2X9, is separated by the spacer, PEG6 ligand. Additionally, we determined that PEG6-NH2 is an essential passivating ligand and spacer for the formation of Bi-based 2D nanosheets. Most importantly, controlled crystallization of the colloidal dispersion of nanosheets results in the formation of superlattice microstructures of the quasi-Ruddlesden-Popper phase. These microstructures can be exfoliated to ultrathin nanosheets by overcoming the van der Waals interaction between the organic passivating layers. The controlled synthesis of lead-free 2D perovskite nanosheets presented here can expand their utility to photocatalytic and optoelectronic applications with reduced toxicity.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC); National Science Foundation (NSF)
Grant/Contract Number:
AC02-06CH11357; DMR-1747582; ECCS-2025064
OSTI ID:
1833589
Journal Information:
Chemistry of Materials, Vol. 33, Issue 15; ISSN 0897-4756
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

References (51)

Two-dimensional organic–inorganic hybrid Ruddlesden–Popper perovskite materials: preparation, enhanced stability, and applications in photodetection journal January 2020
Large Exciton Energy Shifts by Reversible Surface Exchange in 2D II–VI Nanocrystals journal November 2015
Self-Passivation of 2D Ruddlesden–Popper Perovskite by Polytypic Surface PbI 2 Encapsulation journal August 2019
Controlled Synthesis of Lead-Free and Stable Perovskite Derivative Cs 2 SnI 6 Nanocrystals via a Facile Hot-Injection Process journal November 2016
The effect of the halide anion on the optical properties of lead halide perovskites journal June 2019
New compounds of the K 2 NIF 4 type journal August 1957
Thiocyanate Containing Two-Dimensional Cesium Lead Iodide Perovskite, Cs 2 PbI 2 (SCN) 2 : Characterization, Photovoltaic Application, and Degradation Mechanism journal November 2018
Electronic Transport in Two-Dimensional Materials journal April 2018
Lead Halide Perovskite Nanocrystals in the Research Spotlight: Stability and Defect Tolerance journal August 2017
Lead-Free, Blue Emitting Bismuth Halide Perovskite Quantum Dots journal October 2016
Anchoring of Aminophosphonates on Titanium Oxide for Biomolecular Coupling journal June 2019
Atomically thin two-dimensional organic-inorganic hybrid perovskites journal September 2015
Self-Assembly of Two-Dimensional Perovskite Nanosheet Building Blocks into Ordered Ruddlesden–Popper Perovskite Phase journal August 2019
Mechanism of Photocatalytic CO 2 Reduction by Bismuth-Based Perovskite Nanocrystals at the Gas–Solid Interface journal December 2019
Two-Dimensional Colloidal Metal Chalcogenides Semiconductors: Synthesis, Spectroscopy, and Applications journal December 2014
Ruddlesden–Popper Hybrid Lead Iodide Perovskite 2D Homologous Semiconductors journal April 2016
Phase Engineering in Quasi-2D Ruddlesden–Popper Perovskites journal April 2018
Structural Diversity in Cesium Bismuth Halide Nanocrystals journal June 2019
High Quantum Yield Blue Emission from Lead-Free Inorganic Antimony Halide Perovskite Colloidal Quantum Dots journal September 2017
2D Behaviors of Excitons in Cesium Lead Halide Perovskite Nanoplatelets journal February 2017
Recent Advances in the Solution-Based Preparation of Two-Dimensional Layered Transition Metal Chalcogenide Nanostructures journal June 2018
High-efficiency two-dimensional Ruddlesden–Popper perovskite solar cells journal July 2016
Synthesis of Polycrystalline Ruddlesden–Popper Organic Lead Halides and Their Growth Dynamics journal October 2019
Ultrathin Two-Dimensional Organic-Inorganic Hybrid Perovskite Nanosheets with Bright, Tunable Photoluminescence and High Stability journal March 2017
Precise Tuning of the Thickness and Optical Properties of Highly Stable 2D Organometal Halide Perovskite Nanosheets through a Solvothermal Process and Their Applications as a White LED and a Fast Photodetector journal January 2020
Two Dimensions Are Better for Perovskites journal September 2019
Flexible Polymer-Assisted Mesoscale Self-Assembly of Colloidal CsPbBr 3 Perovskite Nanocrystals into Higher Order Superstructures with Strong Inter-Nanocrystal Electronic Coupling journal December 2018
2D Homologous Perovskites as Light-Absorbing Materials for Solar Cell Applications journal June 2015
Dimensionality engineering of hybrid halide perovskite light absorbers journal November 2018
Dual Role of Electron-Accepting Metal-Carboxylate Ligands: Reversible Expansion of Exciton Delocalization and Passivation of Nonradiative Trap-States in Molecule-like CdSe Nanocrystals journal September 2016
Layer-by-Layer Oxidation Induced Electronic Properties in Transition-Metal Dichalcogenides journal July 2018
Electric Field Effect in Atomically Thin Carbon Films journal October 2004
Merits and Challenges of Ruddlesden-Popper Soft Halide Perovskites in Electro-Optics and Optoelectronics journal October 2018
Exfoliation and Defect Control of Two-Dimensional Few-Layer MXene Ti 3 C 2 T x for Electromagnetic Interference Shielding Coatings journal October 2020
Direct-Indirect Nature of the Bandgap in Lead-Free Perovskite Nanocrystals journal June 2017
Colloidal Synthesis of Quantum Confined Single Crystal CsPbBr 3 Nanosheets with Lateral Size Control up to the Micrometer Range journal June 2016
van der Waals Metallic Transition Metal Dichalcogenides journal June 2018
Solvent-like ligand-coated ultrasmall cadmium selenide nanocrystals: strong electronic coupling in a self-organized assembly journal January 2015
Lead-Free, Air-Stable All-Inorganic Cesium Bismuth Halide Perovskite Nanocrystals journal August 2017
Observation of Internal Photoinduced Electron and Hole Separation in Hybrid Two-Dimentional Perovskite Films journal January 2017
Colloidal Nanocrystals of Lead-Free Double-Perovskite (Elpasolite) Semiconductors: Synthesis and Anion Exchange To Access New Materials journal January 2018
Cs 2 PbI 2 Cl 2 , All-Inorganic Two-Dimensional Ruddlesden–Popper Mixed Halide Perovskite with Optoelectronic Response journal August 2018
Two Dimensional Organometal Halide Perovskite Nanorods with Tunable Optical Properties journal April 2016
Color-stable highly luminescent sky-blue perovskite light-emitting diodes journal August 2018
Programmable Colloidal Approach to Hierarchical Structures of Methylammonium Lead Bromide Perovskite Nanocrystals with Bright Photoluminescent Properties journal April 2017
Absolute energy level positions in tin- and lead-based halide perovskites journal June 2019
Tunable Dielectric Properties of Transition Metal Dichalcogenides journal July 2011
Lead-free Mn-doped antimony halide perovskite quantum dots with bright deep-red emission journal January 2021
2D metal carbides and nitrides (MXenes) for energy storage journal January 2017
Edge States Drive Exciton Dissociation in Ruddlesden–Popper Lead Halide Perovskite Thin Films journal September 2020
Nanocrystals of Cesium Lead Halide Perovskites (CsPbX 3 , X = Cl, Br, and I): Novel Optoelectronic Materials Showing Bright Emission with Wide Color Gamut journal February 2015