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Title: High-Throughput Automated Exploration of Phase Growth Behaviors in Quasi-2D Formamidinium Metal Halide Perovskites

Journal Article · · Advanced Energy Materials

Quasi-2D metal halide perovskites (MHPs) are an emerging material platform for sustainable functional optoelectronics, but the uncontrollable, broad phase distribution remains a critical challenge for applications. Nevertheless, the basic principles for controlling phases in quasi-2D MHPs remain poorly understood, due to the rapid crystallization kinetics during the conventional thin-film fabrication process. In this work, a high-throughput automated synthesis-characterization-analysis workflow is implemented to accelerate material exploration in formamidinium (FA)-based quasi-2D MHP compositional space, revealing the early-stage phase growth behaviors fundamentally determining the phase distributions. Upon comprehensive exploration with varying synthesis conditions including 2D:3D composition ratios, antisolvent injection rates, and temperatures in an automated synthesis-characterization platform, it is observed that the prominent n = 2 2D phase restricts the growth kinetics of 3D-like phases—α-FAPbI3 MHPs with spacer-coordinated surface—across the MHP compositions. Thermal annealing is a critical step for proper phase growth, although it can lead to the emergence of unwanted local PbI2 crystallites. Additionally, fundamental insights into the precursor chemistry associated with spacer-solvent interaction determining the quasi-2D MHP morphologies and microstructures are demonstrated. The high-throughput study provides comprehensive insights into the fundamental principles in quasi-2D MHP phase control, enabling new control of the functionalities in complex materials systems for sustainable device applications.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF); National Science Foundation (NSF); Alfred P. Sloan Foundation
Grant/Contract Number:
AC05-00OR22725; 2043205; FG-2022-18275
OSTI ID:
2006941
Journal Information:
Advanced Energy Materials, Vol. 13, Issue 43; ISSN 1614-6832
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

References (50)

Stabilization of Metastable Halide Perovskite Lattices in the 2D Limit journal January 2022
Understanding the ligand-assisted reprecipitation of CsPbBr3 nanocrystals via high-throughput robotic synthesis approach journal September 2023
Deterministic fabrication of 3D/2D perovskite bilayer stacks for durable and efficient solar cells journal September 2022
Controlled growth of perovskite layers with volatile alkylammonium chlorides journal February 2023
The 2D Halide Perovskite Rulebook: How the Spacer Influences Everything from the Structure to Optoelectronic Device Efficiency journal January 2021
A general approach to high-efficiency perovskite solar cells by any antisolvent journal March 2021
Seed‐Assisted Growth of Methylammonium‐Free Perovskite for Efficient Inverted Perovskite Solar Cells journal March 2022
Ligand-engineered bandgap stability in mixed-halide perovskite LEDs journal March 2021
A Universal Perovskite Nanocrystal Ink for High‐Performance Optoelectronic Devices journal December 2022
Toward self-organizing low-dimensional organic–inorganic hybrid perovskites: Machine learning-driven co-navigation of chemical and compositional spaces journal February 2023
Solvent engineering for high-performance inorganic–organic hybrid perovskite solar cells journal July 2014
Small grains as recombination hot spots in perovskite solar cells journal May 2021
Stable α/δ phase junction of formamidinium lead iodide perovskites for enhanced near-infrared emission journal January 2017
Influence of Solvent Coordination on Hybrid Organic–Inorganic Perovskite Formation journal November 2017
Solvent Engineering of Colloidal Quantum Dot Inks for Scalable Fabrication of Photovoltaics journal July 2021
Structural and thermodynamic limits of layer thickness in 2D halide perovskites journal December 2018
Local nanoscale phase impurities are degradation sites in halide perovskites journal May 2022
Understanding Film Formation Morphology and Orientation in High Member 2D Ruddlesden-Popper Perovskites for High-Efficiency Solar Cells journal September 2017
Unravelling Light-Induced Degradation of Layered Perovskite Crystals and Design of Efficient Encapsulation for Improved Photostability journal April 2018
Stabilizing black-phase formamidinium perovskite formation at room temperature and high humidity journal March 2021
2D perovskite stabilized phase-pure formamidinium perovskite solar cells journal August 2018
Chemical Robotics Enabled Exploration of Stability in Multicomponent Lead Halide Perovskites via Machine Learning journal October 2020
Distribution control enables efficient reduced-dimensional perovskite LEDs journal November 2021
Understanding the Solution Chemistry of Lead Halide Perovskites Precursors journal April 2019
Thermal engineering of FAPbI3 perovskite material via radiative thermal annealing and in situ XRD journal January 2017
Pseudo-halide anion engineering for α-FAPbI3 perovskite solar cells journal April 2021
Metastable Dion-Jacobson 2D structure enables efficient and stable perovskite solar cells journal January 2022
Crystalline Liquid-like Behavior: Surface-Induced Secondary Grain Growth of Photovoltaic Perovskite Thin Film journal August 2019
Effect of intramolecular hydrogen-bond formation on the molecular conformation of amino acids journal June 2020
Energy Funneling in Quasi‐2D Ruddlesden–Popper Perovskites: Charge Transfer versus Resonant Energy Transfer journal November 2021
Layered Hybrid Formamidinium Lead Iodide Perovskites: Challenges and Opportunities journal June 2021
Understanding Degradation Mechanisms and Improving Stability of Perovskite Photovoltaics journal November 2018
High-performance large-area quasi-2D perovskite light-emitting diodes journal April 2021
Understanding the Role of Cesium on Chemical Complexity in Methylammonium‐Free Metal Halide Perovskites journal December 2022
Perovskite energy funnels for efficient light-emitting diodes journal June 2016
A PKB-SPEG signaling nexus links insulin resistance with diabetic cardiomyopathy by regulating calcium homeostasis journal May 2020
Revisiting the Aqueous Solutions of Dimethyl Sulfoxide by Spectroscopy in the Mid- and Near-Infrared: Experiments and Car–Parrinello Simulations journal November 2015
Phase Transition Control for High Performance Ruddlesden-Popper Perovskite Solar Cells journal April 2018
Perovskite solar cells with atomically coherent interlayers on SnO2 electrodes journal October 2021
Stabilization of the Metastable Lead Iodide Perovskite Phase via Surface Functionalization journal June 2017
Intercalating-Organic-Cation-Induced Stability Bowing in Quasi-2D Metal-Halide Perovskites journal December 2021
Semiconductor physics of organic–inorganic 2D halide perovskites journal December 2020
Tailoring the Energy Landscape in Quasi-2D Halide Perovskites Enables Efficient Green-Light Emission journal May 2017
Discovery of a New Intermediate Enables One‐Step Deposition of High‐Quality Perovskite Films via Solvent Engineering journal February 2021
Tailoring the Functionality of Organic Spacer Cations for Efficient and Stable Quasi‐2D Perovskite Solar Cells journal April 2019
Ultra-bright, efficient and stable perovskite light-emitting diodes journal November 2022
A bilayer conducting polymer structure for planar perovskite solar cells with over 1,400 hours operational stability at elevated temperatures journal December 2021
Ab initio random structure searching of organic molecular solids: assessment and validation against experimental data journal January 2017
Suppressing phase disproportionation in quasi-2D perovskite light-emitting diodes journal January 2023
High-Throughput Study of Antisolvents on the Stability of Multicomponent Metal Halide Perovskites through Robotics-Based Synthesis and Machine Learning Approaches journal November 2021