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

IR Absorption Frequency: Hybridization01:21

IR Absorption Frequency: Hybridization

636
Hydrocarbons such as alkanes, alkenes, and alkynes show characteristic C–H stretching absorption bands. These IR stretching frequencies depend on the hybridization of the involved carbon atom and can be explained in terms of the s character of each hybridized atomic orbital.
Among the sp, sp2, and sp3 hybridized orbitals, sp orbitals have the maximum s character (50%). Consequently, the electrons are held more closely to the nucleus, resulting in stronger and shorter C–H bonds that...
636

You might also read

Related Articles

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

Sort by
Same author

Electronic localization on the structural inhomogeneities formed due to Bi and Te deficiency in the MBE grown films of AF topological insulator MnBi2Te4: Evidence from spectroscopic ellipsometry and infrared studies.

The Journal of chemical physics·2025
Same author

Substrate-Controlled Response Coefficients in Thin Films.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2025
Same author

Influence of the permittivity between fillers and binders on the properties of upside-down composites for recycling purposes.

Materials advances·2025
Same author

Theoretical prediction and shape-controlled synthesis of two-dimensional semiconductive Ni<sub>3</sub>TeO<sub>6</sub>.

NPJ 2D materials and applications·2024
Same author

Oxide-Halide Perovskite Composites for Simultaneous Recycling of Lead Zirconate Titanate Piezoceramics and Methylammonium Lead Iodide Solar Cells.

Small methods·2023
Same author

Theory for anisotropic local ferroelectric switching.

Nanotechnology·2023

Related Experiment Video

Updated: Jun 9, 2025

Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance
11:38

Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance

Published on: February 27, 2017

18.4K

Tuning optical absorption in perovskite (K,Na)NbO3 ferroelectrics.

V Vetokhina1, N Nepomniashchaia1, E de Prado1

  • 1Institute of Physics of the Czech Academy of Sciences Na Slovance 2 18221 Prague Czech Republic.

Materials Advances
|October 24, 2024
PubMed
Summary
This summary is machine-generated.

Weak (Ba,Ni)-doping in ferroelectric (K,Na)NbO3 films and ceramics did not alter bandgaps but revealed sub-gap optical absorption. This absorption is linked to structural band tailing and lattice strain in perovskite oxides.

More Related Videos

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

9.5K
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

16.6K

Related Experiment Videos

Last Updated: Jun 9, 2025

Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance
11:38

Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance

Published on: February 27, 2017

18.4K
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

9.5K
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

16.6K

Area of Science:

  • Materials Science
  • Solid State Physics
  • Ferroelectricity

Background:

  • Tailoring electronic band structure and optical absorption in perovskite oxides is crucial for electronic and optoelectronic applications.
  • Cationic substitution offers a pathway to modify material properties.

Purpose of the Study:

  • To investigate the effect of weak (Ba,Ni)-doping on optical bandgaps in (K,Na)NbO3 ferroelectric films and ceramics.
  • To explore the origins of sub-gap optical absorption in these materials.

Main Methods:

  • Optical absorption measurements across a broad spectral range (0.7-8.8 eV).
  • Analysis of polycrystalline and epitaxial films, as well as ceramics, with varying doping levels and oxygen deficiencies.
  • Comparison of optical properties across different material forms and conditions.

Main Results:

  • 1-2 at% cationic substitutions or up to 10 at% oxygen vacancies did not significantly affect the direct (~4.5 eV) and indirect (~3.9 eV) bandgaps.
  • Substantial sub-gap optical absorption was observed in doped epitaxial films and ceramics.
  • This sub-gap absorption was attributed to structural band tailing and lattice strain inhomogeneities.

Conclusions:

  • Weak (Ba,Ni)-doping does not effectively reduce the bandgap of (K,Na)NbO3.
  • Structurally induced sub-gap optical absorption, influenced by lattice strain, is a significant phenomenon in perovskite ferroelectrics.
  • This finding has implications for understanding and utilizing optical properties in related ferroelectric ceramics and thin films.