Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Colors and Magnetism03:02

Colors and Magnetism

13.6K
Color in Coordination Complexes
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
13.6K
π Electron Effects on Chemical Shift: Overview01:27

π Electron Effects on Chemical Shift: Overview

1.5K
An applied magnetic field causes loosely bound π-electrons in organic molecules to circulate, producing a local or induced diamagnetic field over a large spatial volume. As the molecules tumble in solution, the field generated by π-electrons in spherical substituents results in a zero net field. However, the net field generated by π-electrons in non-spherical substituents is not zero. The effect of this induced field depends on the orientation of the molecule with respect to B0,...
1.5K
Atomic Nuclei: Nuclear Spin State Overview01:03

Atomic Nuclei: Nuclear Spin State Overview

1.8K
NMR-active nuclei have energy levels called 'spin states' that are associated with the orientations of their nuclear magnetic moments. In the absence of a magnetic field, the nuclear magnetic moments are randomly oriented, and the spin states are degenerate. When an external magnetic field is applied, the spin states have only 2 + 1 orientations available to them. A proton with = ½ has two available orientations. Similarly, for a quadrupolar nucleus with a nuclear spin value of one, the...
1.8K
Valence Bond Theory02:42

Valence Bond Theory

10.8K
Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
10.8K
π Electron Effects on Chemical Shift: Aromatic and Antiaromatic Compounds01:14

π Electron Effects on Chemical Shift: Aromatic and Antiaromatic Compounds

1.7K
In aromatic compounds, such as benzene, the circulation of (4n + 2) π-electrons sets up a diamagnetic or diatropic ring current around the perimeter of the molecule. This current induces a magnetic field that opposes the external field inside the ring and reinforces it on the outside. The protons in benzene are deshielded and exhibit high chemical shifts in the range 6.5–8.5 ppm. The shielding effect at the center of the ring is evident in complex aromatic molecules, such as...
1.7K
The Pauli Exclusion Principle03:06

The Pauli Exclusion Principle

58.5K
The arrangement of electrons in the orbitals of an atom is called its electron configuration. We describe an electron configuration with a symbol that contains three pieces of information:
58.5K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Colossal Photovoltaic Current in Ferroelectric Oxide by Constructing Defect Band.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
Same author

Theoretical Study into Water Promoted CO<sub>2</sub> Hydrogenation to Methanol over PdMo Alloy.

Langmuir : the ACS journal of surfaces and colloids·2026
Same author

Dual-Color Tunable Circularly Polarized Luminescence With Anti-Thermal-Quenching Enabled by Asymmetric Hydrogen-Bonding Networks in Hybrid Manganese Halides.

Advanced materials (Deerfield Beach, Fla.)·2026
Same author

Precise Modulation of Excited-State Energy Flow via Consecutive Twisted Intramolecular Charge Transfer (ConTICT) for Autophagy-Blocking Photothermal Therapy.

Angewandte Chemie (International ed. in English)·2026
Same author

Connecting the dots for cooperative emission.

Nature materials·2026
Same author

Resonant and non-resonant driving of linearly-polarized excitons in Cd<sub>3</sub>P<sub>2</sub> magic-size clusters.

Nature communications·2026

Related Experiment Video

Updated: Dec 23, 2025

Facile Synthesis of Colloidal Lead Halide Perovskite Nanoplatelets via Ligand-Assisted Reprecipitation
04:14

Facile Synthesis of Colloidal Lead Halide Perovskite Nanoplatelets via Ligand-Assisted Reprecipitation

Published on: October 1, 2019

13.5K

Strong Spin-Selective Optical Stark Effect in Lead Halide Perovskite Quantum Dots.

Yulu Li1,2, Shan He1, Xiao Luo1

  • 1State Key Laboratory of Molecular Reaction Dynamics and Dynamics Research Center for Energy and Environmental Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, China.

The Journal of Physical Chemistry Letters
|April 21, 2020
PubMed
Summary

Researchers observed a strong optical Stark effect (OSE) in lead halide perovskite quantum dots (QDs). This finding advances potential applications in spintronics and provides insights into perovskite band edge transitions.

More Related Videos

Inkjet Printing All Inorganic Halide Perovskite Inks for Photovoltaic Applications
07:42

Inkjet Printing All Inorganic Halide Perovskite Inks for Photovoltaic Applications

Published on: January 22, 2019

11.6K
Enhanced Electron Injection and Exciton Confinement for Pure Blue Quantum-Dot Light-Emitting Diodes by Introducing Partially Oxidized Aluminum Cathode
10:41

Enhanced Electron Injection and Exciton Confinement for Pure Blue Quantum-Dot Light-Emitting Diodes by Introducing Partially Oxidized Aluminum Cathode

Published on: May 31, 2018

9.1K

Related Experiment Videos

Last Updated: Dec 23, 2025

Facile Synthesis of Colloidal Lead Halide Perovskite Nanoplatelets via Ligand-Assisted Reprecipitation
04:14

Facile Synthesis of Colloidal Lead Halide Perovskite Nanoplatelets via Ligand-Assisted Reprecipitation

Published on: October 1, 2019

13.5K
Inkjet Printing All Inorganic Halide Perovskite Inks for Photovoltaic Applications
07:42

Inkjet Printing All Inorganic Halide Perovskite Inks for Photovoltaic Applications

Published on: January 22, 2019

11.6K
Enhanced Electron Injection and Exciton Confinement for Pure Blue Quantum-Dot Light-Emitting Diodes by Introducing Partially Oxidized Aluminum Cathode
10:41

Enhanced Electron Injection and Exciton Confinement for Pure Blue Quantum-Dot Light-Emitting Diodes by Introducing Partially Oxidized Aluminum Cathode

Published on: May 31, 2018

9.1K

Area of Science:

  • Materials Science
  • Condensed Matter Physics
  • Quantum Optics

Background:

  • Lead halide perovskites exhibit strong spin-orbital coupling and optical transitions, making them promising for spintronics.
  • The optical Stark effect (OSE) is crucial for manipulating spin states, but requires discrete energy levels and strong band edge transitions.
  • Three-dimensionally confined quantum dots (QDs) offer these properties, yet OSE in perovskite QDs remained unexplored.

Purpose of the Study:

  • To investigate and report the observation of a strong optical Stark effect (OSE) in lead halide perovskite colloidal quantum dots (QDs).
  • To explore the potential of perovskite QDs for spintronic applications through optical manipulation of spin states.
  • To provide fundamental insights into the band edge transition properties of lead halide perovskites.

Main Methods:

  • Utilized circularly polarized transient absorption spectroscopy to detect and quantify the OSE in perovskite colloidal QDs.
  • Synthesized colloidal perovskite QDs, allowing for tuning of size and composition.
  • Analyzed the spectral ranges of OSE in relation to QD parameters.

Main Results:

  • Successfully observed a strong optical Stark effect (OSE) in lead halide perovskite colloidal QDs.
  • Quantified large OSE shifts corresponding to significant transition dipoles (up to 52 D).
  • Demonstrated facile tuning of OSE spectral ranges by adjusting QD size and composition.

Conclusions:

  • Perovskite colloidal QDs exhibit a strong OSE, comparable to other advanced materials.
  • The tunability of OSE in perovskite QDs via size and composition offers a pathway for spintronic device development.
  • This study provides crucial insights into the fundamental electronic properties and optical transitions of lead halide perovskites.