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Compositional and orientational control in metal halide perovskites of reduced dimensionality

Journal Article · · Nature Materials

Reduced-dimensional metal halide perovskites (RDPs) have attracted significant attention in recent years due to their promising light harvesting and emissive properties. We sought to increase the systematic understanding of how RDPs are formed. Here we report that layered intermediate complexes formed with the solvent provide a scaffold that facilitates the nucleation and growth of RDPs during annealing, as observed via in situ X-ray scattering. Transient absorption spectroscopy of RDP single crystals and films enables the identification of the distribution of quantum well thicknesses. These insights allow us to develop a kinetic model of RDP formation that accounts for the experimentally observed size distribution of wells. RDPs exhibit a thickness distribution (with sizes that extend above n = 5) determined largely by the stoichiometric proportion between the intercalating cation and solvent complexes. Here, the results indicate a means to control the distribution, composition and orientation of RDPs via the selection of the intercalating cation, the solvent and the deposition technique.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1490652
Alternate ID(s):
OSTI ID: 1603145
Journal Information:
Nature Materials, Journal Name: Nature Materials Journal Issue: 10 Vol. 17; ISSN 1476-1122
Publisher:
Springer Nature - Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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Unveiling the operation mechanism of layered perovskite solar cells journal March 2019
Templated growth of oriented layered hybrid perovskites on 3D-like perovskites journal January 2020
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Impact of the Solvation State of Lead Iodide on Its Two‐Step Conversion to MAPbI 3 : An In Situ Investigation journal January 2019
Compositional Control in 2D Perovskites with Alternating Cations in the Interlayer Space for Photovoltaics with Efficiency over 18% journal September 2019
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Controlling Spatial Crystallization Uniformity and Phase Orientation of Quasi‐2D Perovskite‐Based Light‐Emitting Diodes Using Lewis Bases journal December 2019
Spontaneous Formation of Nanocrystals in Amorphous Matrix: Alternative Pathway to Bright Emission in Quasi‐2D Perovskites journal June 2019
Exploiting Two‐Step Processed Mixed 2D/3D Perovskites for Bright Green Light Emitting Diodes journal May 2019
Reverse‐Graded 2D Ruddlesden–Popper Perovskites for Efficient Air‐Stable Solar Cells journal April 2019
Anisotropically Electrochemical–Mechanical Evolution in Solid‐State Batteries and Interfacial Tailored Strategy journal November 2019
Anisotropically Electrochemical–Mechanical Evolution in Solid‐State Batteries and Interfacial Tailored Strategy journal November 2019
Charge Transport in Halide Perovskite Single Crystals: Experimental and Theoretical Perspectives journal January 2019
Two‐Dimensional Halide Perovskites in Solar Cells: 2D or not 2D? journal March 2019
Bismuth‐Based Perovskite‐Inspired Solar Cells: In Situ Diagnostics Reveal Similarities and Differences in the Film Formation of Bismuth‐ and Lead‐Based Films journal May 2019
Manipulating the Phase Distributions and Carrier Transfers in Hybrid Quasi‐Two‐Dimensional Perovskite Films journal February 2019
Alcohol Vapor Post‐Annealing for Highly Efficient Sb 2 S 3 Planar Heterojunction Solar Cells journal May 2019
Enhancing Photovoltaic Performance of Aromatic Ammonium‐based Two‐Dimensional Organic‐Inorganic Hybrid Perovskites via Tuning CH···π Interaction journal October 2019
Unveiling the Importance of Precursor Preparation for Highly Efficient and Stable Phenethylammonium‐Based Perovskite Solar Cells journal April 2020
Interlayer Cross‐Linked 2D Perovskite Solar Cell with Uniform Phase Distribution and Increased Exciton Coupling journal April 2020
Below 200 °C Fabrication Strategy of Black‐Phase CsPbI 3 Film for Ambient‐Air‐Stable Solar Cells journal January 2020
Unveiling the Importance of Precursor Preparation for Highly Efficient and Stable Phenethylammonium‐Based Perovskite Solar Cells journal April 2020
Recent advances in controlling the crystallization of two-dimensional perovskites for optoelectronic device journal May 2019
High-resolution remote thermometry and thermography using luminescent low-dimensional tin-halide perovskites journal July 2019
Efficient blue light-emitting diodes based on quantum-confined bromide perovskite nanostructures journal August 2019
Dimensional tailoring of hybrid perovskites for photovoltaics journal November 2018
Heterogeneity at multiple length scales in halide perovskite semiconductors journal July 2019
Phase control of quasi-2D perovskites and improved light-emitting performance by excess organic cations and nanoparticle intercalation journal January 2019
Multi-layered hybrid perovskites templated with carbazole derivatives: optical properties, enhanced moisture stability and solar cell characteristics journal January 2018
Factors determining the vertical orientation of two-dimensional perovskites journal January 2019
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Asymmetric alkyl diamine based Dion–Jacobson low-dimensional perovskite solar cells with efficiency exceeding 15% journal January 2020
Unveiling the operation mechanism of layered perovskite solar cells text January 2019
Heterogeneity at multiple length scales in halide perovskite semiconductors text January 2019
Growth modes and quantum confinement in ultrathin vapour-deposited MAPbI₃ films text January 2019

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