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

P-N junction01:11

P-N junction

1.1K
A p-n junction is formed when p-type and n-type semiconductor materials are joined together. At the interface of the p-n junction, holes from the p-side and electrons from the n-side begin to diffuse into the opposite sides due to the concentration gradient. This diffusion of carriers leads to a region around the junction where there are no free charge carriers, known as the depletion region. The charge density within the depletion region for the n-side and p-side can be described by the...
1.1K
Voltaic/Galvanic Cells02:47

Voltaic/Galvanic Cells

63.0K
Spontaneous Chemical Reactions
Spontaneous redox reactions occur abundantly in nature. The chemical reaction occurring in a disposable AA battery powering our remote controls is one such example of a spontaneous redox reaction. Another example is the immersion of coiled copper wire into an aqueous silver nitrate solution. The reaction shows a gradual, visually impressive color change from colorless to bright blue and the formation of a grey precipitate on the copper wire. In this experiment,...
63.0K
Insensitive Nuclei Enhanced by Polarization Transfer (INEPT)01:15

Insensitive Nuclei Enhanced by Polarization Transfer (INEPT)

995
Insensitive Nuclei Enhanced by Polarization Transfer (INEPT) is an advanced Nuclear Magnetic Resonance (NMR) technique specifically designed to detect and enhance the signals of low-abundance nuclei, such as carbon-13 and nitrogen-15, in small molecules. The fundamental principle behind INEPT is the transfer of polarization from a more abundant and highly polarizable nucleus, typically hydrogen-1, to the low-abundance nucleus of interest. This process effectively boosts the NMR signal of the...
995
Thermal and Photochemical Electrocyclic Reactions: Overview01:26

Thermal and Photochemical Electrocyclic Reactions: Overview

2.9K
Electrocyclic reactions are reversible reactions. They involve an intramolecular cyclization or ring-opening of a conjugated polyene. Shown below are two examples of electrocyclic reactions. In the first reaction, the formation of the cyclic product is favored. In contrast, in the second reaction, ring-opening is favored due to the high ring strain associated with cyclobutene formation.
2.9K
Photochemical Electrocyclic Reactions: Stereochemistry01:26

Photochemical Electrocyclic Reactions: Stereochemistry

2.2K
The absorption of UV–visible light by conjugated systems causes the promotion of an electron from the ground state to the excited state. Consequently, photochemical electrocyclic reactions proceed via the excited-state HOMO rather than the ground-state HOMO. Since the ground- and excited-state HOMOs have different symmetries, the stereochemical outcome of electrocyclic reactions depends on the mode of activation; i.e., thermal or photochemical.
Selection Rules: Photochemical Activation
2.2K

You might also read

Related Articles

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

Sort by
Same author

Grand Challenges and Opportunities in Stimulated Dynamic and Resonant Catalysis.

ACS catalysis·2026
Same author

Ion migration in perovskite solar cells.

Nature reviews. Chemistry·2026
Same author

Quantification of Mobile Ions in Perovskite Solar Cells with Thermally Activated Ion Current Measurements.

ACS energy letters·2026
Same author

Intensity-Modulated Photoluminescence Spectroscopy for Revealing Ionic Processes in Halide Perovskites.

ACS energy letters·2025
Same author

Contact Transfer Epitaxy of Halide Perovskites.

Advanced materials (Deerfield Beach, Fla.)·2025
Same author

Integrated artificial neurons from metal halide perovskites.

Materials horizons·2025
Same journal

DNAzyme-Enhanced CRISPR/Cas12a Cascade Enables Isothermal, One-Pot RNA Diagnostics.

ACS applied materials & interfaces·2026
Same journal

Continuous π-Conjugation in β-Ketoenamine Covalent Organic Frameworks Boosts Charge Transfer for Selective Photocatalysis.

ACS applied materials & interfaces·2026
Same journal

Scalable Ionogel-Based Thermochromic Smart Windows: Enhanced Solar Regulation, Weatherability, and Processability.

ACS applied materials & interfaces·2026
Same journal

Metal-Organic Framework Monoliths Derived from Emulsion-Templated Foams for Reactive Filtration.

ACS applied materials & interfaces·2026
Same journal

Binary to Quaternary Rare-Earth Phosphates: Compositional Effects on Thermal Properties and CMAS Corrosion Resistance of Environmental Barrier Coatings.

ACS applied materials & interfaces·2026
Same journal

Suture-Free Piezoelectric Band-Aid Membrane for Complex Peripheral Nerve Defects.

ACS applied materials & interfaces·2026
See all related articles

Related Experiment Video

Updated: Jan 14, 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

Excitation Intervals Enhance Performance in Perovskite Solar Cells.

Sarah C Gillespie1,2, Jarla Thiesbrummel1, Veronique S Gevaerts2

  • 1LMPV-Sustainable Energy Materials Department, AMOLF Institute, Science Park 104, Amsterdam1098XG, The Netherlands.

ACS Applied Materials & Interfaces
|October 18, 2025
PubMed
Summary
This summary is machine-generated.

Periodic light-dark cycling stabilizes perovskite solar cells by suppressing ion migration and improving efficiency. This method enhances performance even in aged perovskite materials, offering a path for durable optoelectronics.

Keywords:
dark recoveryhalide perovskitesion migrationperovskite solar cellsphotoluminescencestability

More Related Videos

Flash Infrared Annealing for Perovskite Solar Cell Processing
05:15

Flash Infrared Annealing for Perovskite Solar Cell Processing

Published on: February 3, 2021

8.6K
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 14, 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
Flash Infrared Annealing for Perovskite Solar Cell Processing
05:15

Flash Infrared Annealing for Perovskite Solar Cell Processing

Published on: February 3, 2021

8.6K
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
  • Photovoltaics
  • Optoelectronics

Background:

  • Halide perovskites exhibit instability issues, mainly due to ion migration triggered by light and electrical bias.
  • This ion migration leads to performance degradation over operational time scales.

Purpose of the Study:

  • To investigate the impact of light-dark (LD) cycling on the stability and efficiency of perovskite films and devices.
  • To determine if periodic dark intervals can mitigate ion-mediated degradation.

Main Methods:

  • Systematic photoluminescence (PL) studies were conducted to analyze material behavior under LD cycling.
  • Perovskite solar cell devices were subjected to LD cycling during operation and characterization.
  • Photoluminescence kinetics and device power conversion efficiency were measured.

Main Results:

  • Dark intervals, even on the order of seconds, significantly suppressed nonradiative recombination and slowed degradation.
  • LD cycling enhanced PL by over 7-fold, even in aged samples prone to photodarkening.
  • PL kinetics under LD cycling correlated with open-circuit voltage dynamics in devices.
  • LD cycling improved power conversion efficiency and reduced deterioration during extended operation compared to continuous illumination.

Conclusions:

  • Light-dark cycling is an effective strategy to stabilize perovskite performance by mitigating ion migration.
  • This dynamic approach can preserve and potentially enhance perovskite optoelectronic device performance.
  • LD cycling offers a promising pathway for developing more durable perovskite-based technologies.