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: Stoichiometric Point Defects01:26

Imperfections in Crystal Structure: Stoichiometric Point Defects

Schottky defects arise when some lattice points in a crystal, such as those in NaCl, remain unoccupied, creating lattice vacancies without disturbing the overall electrical neutrality of the crystal. This defect is common in ionic crystals where the positive and negative ions are similar in size, as seen in sodium chloride and cesium chloride. The presence of Schottky defects enables the crystal to conduct electricity to a small extent through an ionic mechanism. Electric fields cause nearby...

You might also read

Related Articles

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

Sort by
Same author

THz spectroscopy and deviation from Drude model of LT-GaAs thin films with sub-picosecond charge-carrier lifetime.

Faraday discussions·2026
Same author

Overcoming Charge-Carrier Localization in Metal Chalcohalides.

Journal of the American Chemical Society·2026
Same author

Tracking the Breakdown of Quantum Confinement during Structural Degradation of FAPbI<sub>3</sub>.

The journal of physical chemistry letters·2026
Same author

Odd-Even Cation Engineering of the Excitation Transport Anisotropy in Two-Dimensional Perovskite Films.

ACS nano·2026
Same author

Assessing the Opportunities of Spectral Shaping by Quantum Cutting for Perovskite/Silicon Tandem Solar Cells.

ACS energy letters·2026
Same author

Is Photoluminescence Spectroscopy a Suitable Probe of Halide Segregation?

ACS energy letters·2026

Related Experiment Video

Updated: Jul 4, 2026

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

19.0K

Optically Determined Hole Effective Mass in Tin-Iodide Perovskite Films.

Vincent J-Y Lim1, Marcello Righetto1, Michael D Farrar1

  • 1Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, U.K.

ACS Energy Letters
|September 19, 2025
PubMed
Summary

Researchers developed a noncontact optical method to measure the effective mass of holes in tin-halide perovskites, crucial for lead-free solar cells. This technique helps screen materials for better charge transport properties.

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

17.1K
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

Related Experiment Videos

Last Updated: Jul 4, 2026

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

19.0K
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
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

Area of Science:

  • Materials Science
  • Solid-State Physics
  • Photovoltaics

Background:

  • Tin-halide perovskites are promising lead-free semiconductors for photovoltaics.
  • Their charge transport is often limited by hole dominance due to self-doping.
  • Understanding hole effective mass is key to optimizing performance.

Purpose of the Study:

  • To develop a noncontact optical spectroscopic method for determining hole effective mass.
  • To investigate the charge transport properties of FASnI3 thin films.
  • To enable efficient screening of materials for improved photovoltaic applications.

Main Methods:

  • Utilized mid-infrared reflectance spectroscopy on FASnI3 thin films.
  • Tuned hole densities via SnF2 additive concentration and air exposure.
  • Modeled plasma frequency by analyzing shifts in FA cation vibrational resonance.

Main Results:

  • Accurately determined the hole effective mass in FASnI3 to be 0.28 me.
  • Demonstrated valence band parabolicity within ~100 meV of the band edge.
  • Observed insignificant coupling between hole plasma and FA cation.

Conclusions:

  • The developed noncontact optical method is effective for characterizing hole effective mass.
  • This technique facilitates the screening of tin-halide perovskites for optimized charge-carrier transport.
  • The findings contribute to the advancement of lead-free photovoltaic materials.