Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Impact of Processing on Structural and Compositional Evolution in Mixed Metal Halide Perovskites during Film Formation

Journal Article · · Advanced Functional Materials

Understanding crystallization processes and their pathways in metal-halide perovskites is of crucial importance as this strongly affects the film microstructure, its stability, and device performance. While many approaches are developed to control perovskite formation, the mechanisms of film formation are still poorly known. Using time-resolved in situ grazing incidence wideangle X-ray scattering, the film formation of perovskites is investigated with average stoichiometry Cs0.15FA0.85PbI3, where FA is formamidinium, using the popular antisolvent dropping and gas jet treatments and this is contrasted with untreated films. i) The crystallization pathways during spin coating, ii) the subsequent postdeposition thermal annealing, and iii) crystallization during blade coating are studied. The findings reveal that the formation of a nonperovskite FAPbI3 phase during spin coating is initially dominant regardless of the processing and that the processing treatment (e.g., antisolvent dropping, gas jet) has a significant impact on the as-cast film structure and affects the phase evolution during subsequent thermal treatment. It is shown that blade coating can be used to overcome the nonperovskite phase formation via solvothermal direct crystallization of perovskite phase. This work shows how real-time investigation of perovskite formation can help to establish processing–microstructure–functionality relationships.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1646798
Alternate ID(s):
OSTI ID: 1638560
Journal Information:
Advanced Functional Materials, Journal Name: Advanced Functional Materials Journal Issue: 38 Vol. 30; ISSN 1616-301X
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

References (63)

Interfacial Control Toward Efficient and Low-Voltage Perovskite Light-Emitting Diodes journal February 2015
A Universal Deposition Protocol for Planar Heterojunction Solar Cells with High Efficiency Based on Hybrid Lead Halide Perovskite Families journal October 2016
Hybrid Perovskite Thin-Film Photovoltaics: In Situ Diagnostics and Importance of the Precursor Solvate Phases journal November 2016
High-Performance Single-Crystalline Perovskite Thin-Film Photodetector journal January 2018
In Situ Real-Time Study of the Dynamic Formation and Conversion Processes of Metal Halide Perovskite Films journal January 2018
Abnormal Synergetic Effect of Organic and Halide Ions on the Stability and Optoelectronic Properties of a Mixed Perovskite via In Situ Characterizations journal May 2018
Manipulating the Mixed‐Perovskite Crystallization Pathway Unveiled by In Situ GIWAXS journal April 2019
Formamidinium and Cesium Hybridization for Photo- and Moisture-Stable Perovskite Solar Cell journal September 2015
Die Gesetze der Krystallochemie journal May 1926
Scalable Fabrication of Perovskite Solar Cells to Meet Climate Targets journal November 2018
Fully Air-Bladed High-Efficiency Perovskite Photovoltaics journal February 2019
Multi-cation Synergy Suppresses Phase Segregation in Mixed-Halide Perovskites journal July 2019
Scalable Ambient Fabrication of High-Performance CsPbI2Br Solar Cells journal October 2019
Structural Origins of Light-Induced Phase Segregation in Organic-Inorganic Halide Perovskite Photovoltaic Materials journal January 2020
Stabilizing Perovskite Structures by Tuning Tolerance Factor: Formation of Formamidinium and Cesium Lead Iodide Solid-State Alloys journal December 2015
From Nano- to Micrometer Scale: The Role of Antisolvent Treatment on High Performance Perovskite Solar Cells journal April 2017
Mixing Behavior in Small Molecule:Fullerene Organic Photovoltaics journal March 2017
Radiative Thermal Annealing/in Situ X-ray Diffraction Study of Methylammonium Lead Triiodide: Effect of Antisolvent, Humidity, Annealing Temperature Profile, and Film Substrates journal July 2017
Introduction: Perovskites journal March 2019
Cubic Perovskite Structure of Black Formamidinium Lead Iodide, α-[HC(NH 2 ) 2 ]PbI 3 , at 298 K journal July 2015
Thermodynamics and the Intrinsic Stability of Lead Halide Perovskites CH 3 NH 3 PbX 3 journal June 2018
Origin of Reversible Photoinduced Phase Separation in Hybrid Perovskites journal January 2017
Progress on Perovskite Materials and Solar Cells with Mixed Cations and Halide Anions journal July 2017
Critical Intermediate Structure That Directs the Crystalline Texture and Surface Morphology of Organo-Lead Trihalide Perovskite journal October 2017
The Many Faces of Mixed Ion Perovskites: Unraveling and Understanding the Crystallization Process journal November 2017
Compositional Engineering for Efficient Wide Band Gap Perovskites with Improved Stability to Photoinduced Phase Segregation journal January 2018
Blade-Coated Hybrid Perovskite Solar Cells with Efficiency > 17%: An In Situ Investigation journal March 2018
Electronic Properties of {111} Twin Boundaries in a Mixed-Ion Lead Halide Perovskite Solar Absorber journal October 2018
Induced Crystallization of Perovskites by a Perylene Underlayer for High-Performance Solar Cells journal May 2016
Anharmonicity and Disorder in the Black Phases of Cesium Lead Iodide Used for Stable Inorganic Perovskite Solar Cells journal March 2018
Semiconducting Tin and Lead Iodide Perovskites with Organic Cations: Phase Transitions, High Mobilities, and Near-Infrared Photoluminescent Properties journal July 2013
The Role of Intrinsic Defects in Methylammonium Lead Iodide Perovskite journal March 2014
Temperature- and Component-Dependent Degradation of Perovskite Photovoltaic Materials under Concentrated Sunlight journal January 2015
Sequential deposition as a route to high-performance perovskite-sensitized solar cells journal July 2013
Thermal engineering of FAPbI3 perovskite material via radiative thermal annealing and in situ XRD journal January 2017
In situ dynamic observations of perovskite crystallisation and microstructure evolution intermediated from [PbI6]4− cage nanoparticles journal June 2017
Non-wetting surface-driven high-aspect-ratio crystalline grain growth for efficient hybrid perovskite solar cells journal July 2015
23.6%-efficient monolithic perovskite/silicon tandem solar cells with improved stability journal February 2017
The emergence of perovskite solar cells journal July 2014
Transformation from crystalline precursor to perovskite in PbCl2-derived MAPbI3 journal August 2018
All-optical control of lead halide perovskite microlasers journal April 2019
Compositional and orientational control in metal halide perovskites of reduced dimensionality journal September 2018
Rational molecular passivation for high-performance perovskite light-emitting diodes journal March 2019
Efficient blue light-emitting diodes based on quantum-confined bromide perovskite nanostructures journal August 2019
Photovoltaic solar cell technologies: analysing the state of the art journal March 2019
Heterogeneity at multiple length scales in halide perovskite semiconductors journal July 2019
Solid-state principles applied to organic–inorganic perovskites: new tricks for an old dog journal January 2014
Structural and optical properties of methylammonium lead iodide across the tetragonal to cubic phase transition: implications for perovskite solar cells journal January 2016
Entropic stabilization of mixed A-cation ABX 3 metal halide perovskites for high performance perovskite solar cells journal January 2016
Degradation observations of encapsulated planar CH 3 NH 3 PbI 3 perovskite solar cells at high temperatures and humidity journal January 2015
Soft-cover deposition of scaling-up uniform perovskite thin films for high cost-performance solar cells journal January 2016
From scalable solution fabrication of perovskite films towards commercialization of solar cells journal January 2019
Insights into operational stability and processing of halide perovskite active layers journal January 2019
Chemical stability and instability of inorganic halide perovskites journal January 2019
Scalable slot-die coating of high performance perovskite solar cells journal January 2018
Antisolvent processing of lead halide perovskite thin films studied by in situ X-ray diffraction journal January 2018
Exploring the formation of formamidinium-based hybrid perovskites by antisolvent methods: in situ GIWAXS measurements during spin coating journal January 2019
Direct calorimetric verification of thermodynamic instability of lead halide hybrid perovskites journal June 2016
VESTA 3 for three-dimensional visualization of crystal, volumetric and morphology data journal October 2011
Nika : software for two-dimensional data reduction journal March 2012
The fast azimuthal integration Python library: pyFAI journal March 2015
Nanoscale mapping of chemical composition in organic-inorganic hybrid perovskite films journal October 2019
Iodide management in formamidinium-lead-halide–based perovskite layers for efficient solar cells journal June 2017

Similar Records

Impact of processing conditions on the film formation of lead-free halide double perovskite Cs2AgBiBr6
Journal Article · Wed May 18 00:00:00 EDT 2022 · Journal of Materials Chemistry. A · OSTI ID:1887196

Polytype selection in the antisolvent-free crystallization of formamidinium lead iodide using alkylammonium chlorides
Journal Article · Tue Jun 03 00:00:00 EDT 2025 · Journal of Materials Chemistry A · OSTI ID:2573787

High-performance formamidinium-based perovskite solar cells via microstructure-mediated δ-to-α phase transformation
Journal Article · Tue Mar 14 00:00:00 EDT 2017 · Chemistry of Materials · OSTI ID:1358335

Related Subjects