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

Electron-donating functional groups strengthen ligand-induced chiral imprinting on CsPbBr3 quantum dots

Journal Article · · Scientific Reports

Abstract

Chiral perovskite nanoparticles and films are promising for integration in emerging spintronic and optoelectronic technologies, yet few design rules exist to guide the development of chiral material properties. The chemical space of potential building blocks for these nanostructures is vast, and the mechanisms through which organic ligands can impart chirality to the inorganic perovskite lattice are not well understood. In this work, we investigate how the properties of chiral ammonium ligands, the most common organic ligand type used with perovskites, affect the circular dichroism of strongly quantum confined CsPbBr 3 nanocrystals. We show that aromatic ammonium ligands with stronger electron-donating groups lead to higher-intensity circular dichroism associated with the lowest-energy excitonic transition of the perovskite nanocrystal. We argue that this behavior is best explained by a modulation of the exciton wavefunction overlap between the nanocrystal and the organic ligand, as the functional groups on the ligand can shift electron density toward the organic species-perovskite lattice interface to increase the imprinting.

Sponsoring Organization:
USDOE
OSTI ID:
2275006
Alternate ID(s):
OSTI ID: 2340087
Journal Information:
Scientific Reports, Journal Name: Scientific Reports Journal Issue: 1 Vol. 14; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United Kingdom
Language:
English

References (46)

Endowing Perovskite Nanocrystals with Circularly Polarized Luminescence journal January 2018
Imprinting Chirality onto the Electronic States of Colloidal Perovskite Nanoplatelets journal April 2018
Theory of Chirality Induced Spin Selectivity: Progress and Challenges journal February 2022
Chiral Perovskite Nanoplatelets Exhibiting Circularly Polarized Luminescence through Ligand Optimization journal July 2022
Leveraging Hierarchical Chirality in Perovskite(‐Inspired) Halides for Transformative Device Applications journal July 2022
Near‐Unity Photoluminescence Quantum Efficiency for All CsPbX 3 (X=Cl, Br, and I) Perovskite Nanocrystals: A Generic Synthesis Approach journal March 2019
Effect of the damping function in dispersion corrected density functional theory journal March 2011
Ligand‐Assisted Self‐Assembly of 3D Perovskite Nanocrystals into Chiral Inorganic Quasi‐2D Perovskites (n = 3) with Ligand‐Ratio‐Dependent Chirality Inversion journal May 2023
Understanding Degradation Mechanisms and Improving Stability of Perovskite Photovoltaics journal November 2018
Halide Perovskite Photovoltaics: Background, Status, and Future Prospects journal March 2019
Metal Halide Perovskite Nanocrystals: Synthesis, Post-Synthesis Modifications, and Their Optical Properties journal February 2019
Charge-Carrier Recombination in Halide Perovskites: Focus Review journal September 2019
Ligand Coverage and Exciton Delocalization Control Chiral Imprinting in Perovskite Nanoplatelets journal August 2022
Chiral Molecules and the Spin Selectivity Effect journal April 2020
Charge Carriers in Hybrid Organic–Inorganic Lead Halide Perovskites Might Be Protected as Large Polarons journal November 2015
Origin of the Substitution Mechanism for the Binding of Organic Ligands on the Surface of CsPbBr 3 Perovskite Nanocubes journal September 2017
Room-Temperature, Highly Pure Single-Photon Sources from All-Inorganic Lead Halide Perovskite Quantum Dots journal April 2022
Probing the Interaction of Quantum Dots with Chiral Capping Molecules Using Circular Dichroism Spectroscopy journal November 2016
Precise Control of Quantum Confinement in Cesium Lead Halide Perovskite Quantum Dots via Thermodynamic Equilibrium journal May 2018
Ligand Exchange Strategy to Achieve Chiral Perovskite Nanocrystals with a High Photoluminescence Quantum Yield and Regulation of the Chiroptical Property journal December 2021
Realizing High-Detectivity Near-Infrared Photodetectors in Tin–Lead Perovskites by Double-Sided Surface-Preferred Distribution of Multifunctional Tin Thiocyanate Additive journal December 2022
Spin Selectivity in Photoinduced Charge-Transfer Mediated by Chiral Molecules journal April 2019
A survey of Hammett substituent constants and resonance and field parameters journal March 1991
Chiral 2D Organic Inorganic Hybrid Perovskite with Circular Dichroism Tunable Over Wide Wavelength Range journal February 2020
Organic-to-inorganic structural chirality transfer in a 2D hybrid perovskite and impact on Rashba-Dresselhaus spin-orbit coupling journal September 2020
Suppressing phase disproportionation in quasi-2D perovskite light-emitting diodes journal January 2023
Genesis, challenges and opportunities for colloidal lead halide perovskite nanocrystals journal February 2018
Nano-optical designs for high-efficiency monolithic perovskite–silicon tandem solar cells journal October 2022
Synergistic strain engineering of perovskite single crystals for highly stable and sensitive X-ray detectors with low-bias imaging and monitoring journal July 2022
Extreme γ-ray radiation hardness and high scintillation yield in perovskite nanocrystals journal November 2022
Chiral molecules and the electron spin journal March 2019
Control of light, spin and charge with chiral metal halide semiconductors journal June 2022
Ultra-bright, efficient and stable perovskite light-emitting diodes journal November 2022
The chiroptical signature of achiral metal clusters induced by dissymmetric adsorbates journal January 2006
A new class of chiral semiconductors: chiral-organic-molecule-incorporating organic–inorganic hybrid perovskites journal January 2017
Using post-synthetic ligand modification to imprint chirality onto the electronic states of cesium lead bromide (CsPbBr 3 ) perovskite nanoparticles journal January 2021
Rapid separation and purification of lead halide perovskite quantum dots through differential centrifugation in nonpolar solvent journal January 2021
Size-dependent chiro-optical properties of CsPbBr3nanoparticles journal January 2023
Application of electronic circular dichroism in configurational and conformational analysis of organic compounds journal January 2007
The spin selectivity effect in chiral materials journal April 2021
Circular Dichroism and Linear Dichroism book January 1997
Properties and potential optoelectronic applications of lead halide perovskite nanocrystals journal November 2017
Coherent single-photon emission from colloidal lead halide perovskite quantum dots journal February 2019
Conformal quantum dot–SnO 2 layers as electron transporters for efficient perovskite solar cells journal January 2022
CRC Standard Probability and Statistics Tables and Formulae book December 1999
Identifying defect-tolerant semiconductors with high minority-carrier lifetimes: beyond hybrid lead halide perovskites journal May 2015

Similar Records

Imprinting Chirality onto the Electronic States of Colloidal Perovskite Nanoplatelets
Journal Article · Thu Apr 26 00:00:00 EDT 2018 · Advanced Materials · OSTI ID:1604940

Ligand Coverage and Exciton Delocalization Control Chiral Imprinting in Perovskite Nanoplatelets
Journal Article · Tue Aug 23 00:00:00 EDT 2022 · Journal of Physical Chemistry. C · OSTI ID:1905454

Related Subjects