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

Imperfections in Crystal Structure: Non-Stoichiometric Defects01:29

Imperfections in Crystal Structure: Non-Stoichiometric Defects

Non-stoichiometric defects refer to a type of defect in the crystal structure of a compound where the ratio of its constituent elements deviates from the ideal stoichiometric ratio. There are two main types of non-stoichiometric defects: metal excess defects and metal deficiency defects.Metal excess defects occur when there is a slight surplus of metal ions than what is required by the stoichiometric ratio of the compound. For example, heating a sodium chloride crystal in sodium vapor results...
Ionic Crystal Structures02:42

Ionic Crystal Structures

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...
Valence Bond Theory02:42

Valence Bond Theory

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...
Alkyl Halides02:45

Alkyl Halides

Structural Properties
Alkyl halides are halogen-substituted alkanes wherein one or more hydrogen atoms of an alkane is replaced by a halogen atom such as fluorine, chlorine, bromine, or iodine. The carbon atom in an alkyl halide is bonded to the halogen atom, which is sp3-hybridized and exhibits a tetrahedral shape.
Unlike alkyl halides, compounds in which a halogen atom is bonded to an sp2 -hybridized carbon atom of a carbon-carbon double bond (C=C) are called vinyl halides. Whereas aryl...

You might also read

Related Articles

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

Sort by
Same author

Intercepting Photogenerated Aminyl Radicals at Metal-Halide Perovskite Microcrystals to Forge C─N Bonds With Non-Preactivated Substrates.

Small science·2026
Same author

Dispersed vs. Covalently Integrated Benzothioxanthene Emitters in Sustainable Luminescent Solar Concentrators.

Macromolecular rapid communications·2026
Same author

Insights Into the Photocatalytic Arene Bromination Enabled by Cs<sub>2</sub>AgBiBr<sub>6</sub> Microparticles.

Chemistry (Weinheim an der Bergstrasse, Germany)·2026
Same author

Surface Modification of TiO<sub>2</sub> Nanorods for Dye Removal: Photodegradation vs Adsorption Activity.

ACS omega·2025
Same author

Silver-bismuth perovskite-inspired materials: chemistry, optoelectronic properties, and emerging applications in photovoltaics and beyond.

Journal of materials chemistry. A·2025
Same author

Electronic Structure and Interfacial Hole Transfer in a Di-Rhodium Photocatalyst on a p‑Type NiO Electrode.

The journal of physical chemistry. C, Nanomaterials and interfaces·2025

Related Experiment Video

Updated: Jun 17, 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

Engineering halide composition to control structural and electronic properties in bismuth-based perovskite-inspired

Michael Zambrano-Angulo1, Adriana Pecoraro1, Roberto Grisorio2

  • 1Department of Physics "E. Pancini", University of Naples Federico II, Naples, 80126, Italy. anabelen.munozgarcia@unina.it.

Physical Chemistry Chemical Physics : PCCP
|June 16, 2026
PubMed
Summary

Lead-free bismuth perovskites offer a safer alternative for optoelectronic devices. Halogen composition critically impacts their structural, electronic, and transport properties, guiding future material design.

More Related Videos

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

Solution-Processed "Silver-Bismuth-Iodine" Ternary Thin Films for Lead-Free Photovoltaic Absorbers
10:19

Solution-Processed "Silver-Bismuth-Iodine" Ternary Thin Films for Lead-Free Photovoltaic Absorbers

Published on: September 27, 2018

Related Experiment Videos

Last Updated: Jun 17, 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

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

Solution-Processed "Silver-Bismuth-Iodine" Ternary Thin Films for Lead-Free Photovoltaic Absorbers
10:19

Solution-Processed "Silver-Bismuth-Iodine" Ternary Thin Films for Lead-Free Photovoltaic Absorbers

Published on: September 27, 2018

Area of Science:

  • Materials Science
  • Solid-State Physics
  • Photovoltaics

Background:

  • Lead halide perovskites are leading optoelectronic materials but raise toxicity concerns due to lead.
  • Bismuth-based perovskite-inspired materials offer a promising lead-free alternative with tunable properties.

Purpose of the Study:

  • Investigate the structural, electronic, and transport properties of Cs3Bi2I9 and Cs3Bi2Br9.
  • Explore the effects of iodine/bromine (I/Br) mixing on these properties.
  • Provide insights for optimizing halide content in perovskite-inspired materials.

Main Methods:

  • State-of-the-art first-principles calculations.
  • Analysis of phase stability, electronic bandgap, and effective masses.
  • Investigation of charge carrier mobility and localization.

Main Results:

  • Phase stability shifts with Br content, favoring different crystal structures (P63/mmc vs. P-3m1).
  • Electronic bandgap increases with higher bromine content.
  • Electrons show higher mobility than holes, which become more localized with increasing Br.

Conclusions:

  • Halogen composition is crucial for tuning the properties of bismuth perovskite-inspired materials.
  • These findings are valuable for designing efficient lead-free materials for photovoltaics and photocatalysis.
  • Optimizing halide ratios is key for next-generation optoelectronic applications.