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

Ionic Crystal Structures02:42

Ionic Crystal Structures

16.8K
Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
16.8K
Valence Bond Theory02:42

Valence Bond Theory

11.2K
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...
11.2K
Stereoisomerism02:52

Stereoisomerism

13.9K
Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula.
Transition metal complexes often exist as geometric isomers, in which the same atoms are connected through the same types of bonds but with differences in their orientation in space. Coordination complexes with two different ligands in the cis and trans positions from a ligand of interest form isomers. For example, the octahedral [Co(NH3)4Cl2]+ ion has two isomers (Figure 1) In the cis...
13.9K
Crystal Field Theory - Tetrahedral and Square Planar Complexes02:46

Crystal Field Theory - Tetrahedral and Square Planar Complexes

48.1K
Tetrahedral Complexes
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...
48.1K
Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

30.6K
Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
30.6K
Structural Isomerism02:34

Structural Isomerism

21.5K
Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can...
21.5K

You might also read

Related Articles

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

Sort by
Same author

Gate-Tunable Magnetoresistance in Antiferromagnetic van der Waals FePS<sub>3</sub> Transistors.

Nano letters·2026
Same author

Metal-Phenolic Coatings Enable Universal Design of Spherical Nucleic Acids.

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

Correction to "DNA-Mediated Cellular Delivery of Functional Enzymes".

Journal of the American Chemical Society·2026
Same author

High-χ Block Copolymer Nanoreactors for the Confined Synthesis of Size-Controlled Nanoclusters.

ACS nano·2026
Same author

Programmable Stepwise Heteroepitaxial Growth of Colloidal Crystals With Different Phases.

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

Simplex-based model for nanoparticle grain identification in four-dimensional scanning transmission electron microscopy data.

Journal of microscopy·2026

Related Experiment Video

Updated: Jan 15, 2026

Low Pressure Vapor-assisted Solution Process for Tunable Band Gap Pinhole-free Methylammonium Lead Halide Perovskite Films
08:12

Low Pressure Vapor-assisted Solution Process for Tunable Band Gap Pinhole-free Methylammonium Lead Halide Perovskite Films

Published on: September 8, 2017

10.0K

A-Cation-Dependent Structure-Optical Property Relationships of Halide Perovskite Heterostructures with Complex

Donghoon Shin1,2,3, Yongjin Shin4, David D Xu2,3

  • 1Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States.

Journal of the American Chemical Society
|October 9, 2025
PubMed
Summary

Synthesizing halide perovskite heterostructures with controlled interfaces enhances energy conversion. These interfaces reduce lattice distortions, extending carrier lifetimes and improving optoelectronic properties for future devices.

More Related Videos

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

13.6K
Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells
08:30

Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells

Published on: March 19, 2017

17.1K

Related Experiment Videos

Last Updated: Jan 15, 2026

Low Pressure Vapor-assisted Solution Process for Tunable Band Gap Pinhole-free Methylammonium Lead Halide Perovskite Films
08:12

Low Pressure Vapor-assisted Solution Process for Tunable Band Gap Pinhole-free Methylammonium Lead Halide Perovskite Films

Published on: September 8, 2017

10.0K
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

13.6K
Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells
08:30

Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells

Published on: March 19, 2017

17.1K

Area of Science:

  • Materials Science
  • Solid-State Physics
  • Nanotechnology

Background:

  • Halide perovskite heterostructures show potential for energy conversion applications.
  • Challenges in synthesizing well-defined structures hinder understanding of structure-property relationships.

Purpose of the Study:

  • To synthesize compositionally controlled 3D/3D and 3D/2D halide perovskite heterostructures.
  • To investigate how interfacial effects influence vibrational dynamics, electron-phonon coupling, and carrier lifetimes.
  • To establish design principles for engineering perovskite heterostructures.

Main Methods:

  • Evaporation crystallization-polymer pen lithography (EC-PPL) for heterostructure synthesis.
  • Single-particle analysis to study material properties.
  • Raman spectroscopy, temperature-dependent photoluminescence, and power-dependent emission analysis.

Main Results:

  • Heterointerfaces induce local lattice distortions, modulating vibrational dynamics and electron-phonon coupling.
  • Interfacial effects significantly extend carrier lifetimes compared to pure phases.
  • Smaller crystals exhibit magnified interfacial effects due to increased contributions.

Conclusions:

  • Interface-driven lattice control is critical for tuning optoelectronic properties of halide perovskites.
  • Understanding and controlling interfacial effects is key for designing next-generation optoelectronic devices.
  • The study provides a method for creating compositionally controlled perovskite heterostructures.