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

You might also read

Related Articles

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

Sort by
Same authorSame journal

Color-Tunable Broadband Chiral Copper(I) Halides Scintillators for High-Resolution X-Ray Polarization Imaging.

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

Decoupling Thermodynamic Dilemma in the Crystallization of Cs<sub>3</sub>BiSbBr<sub>9</sub> Bimetallic Perovskites for Photocatalytic HBr Splitting.

Inorganic chemistry·2026
Same author

Dual-Functional Ionic Liquid Additive Enables High-Performance Perovskite Solar Cells by Suppressing Ion Migration and Passivating Defects.

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

Deprotonated Self-Assembled Monolayer for Inverted CsPbI<sub>2</sub>Br Perovskite Solar Cells With Record-Efficiency and Open-Circuit Voltage.

Small methods·2026
Same author

Chiral manganese halide isomers: decoding the spatial stacking effect on second-harmonic generation circular dichroism.

Chemical science·2026
Same author

Dynamic Coordination Geometry Transformation for Near-Unity PLQY and Photo-Tunable Full-Color Circularly Polarized Luminescence.

The journal of physical chemistry letters·2026

Related Experiment Video

Updated: Aug 9, 2025

Flash Infrared Annealing for Perovskite Solar Cell Processing
05:15

Flash Infrared Annealing for Perovskite Solar Cell Processing

Published on: February 3, 2021

8.0K

High Efficiency Near-Infrared Perovskite Light Emitting Diodes With Reduced Rolling-Off by Surface Post-Treatment.

Jianwu Wei1, Jiong Li2, Chenghao Duan2

  • 1School of Chemistry and Chemical Engineering, Guangxi Key Laboratory of Electrochemical Energy Materials, Guangxi University, Nanning, 530004, P. R. China.

Small (Weinheim an Der Bergstrasse, Germany)
|February 17, 2023
PubMed
Summary

Surface treatment with 2-amino-5-iodopyrazine (AIPZ) significantly enhances perovskite light-emitting diodes (PeLEDs). This method reduces efficiency roll-off at high current densities, improving PeLED performance for practical applications.

Keywords:
2-amino-5-iodopyrazinelow rolling-offperovskite light emitting diodessurface treatments

More Related Videos

Development of Efficient OLEDs from Solution Deposition
07:09

Development of Efficient OLEDs from Solution Deposition

Published on: November 4, 2022

2.2K
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

9.6K

Related Experiment Videos

Last Updated: Aug 9, 2025

Flash Infrared Annealing for Perovskite Solar Cell Processing
05:15

Flash Infrared Annealing for Perovskite Solar Cell Processing

Published on: February 3, 2021

8.0K
Development of Efficient OLEDs from Solution Deposition
07:09

Development of Efficient OLEDs from Solution Deposition

Published on: November 4, 2022

2.2K
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

9.6K

Area of Science:

  • Materials Science
  • Optoelectronics
  • Chemistry

Background:

  • Perovskite light-emitting diodes (PeLEDs) face efficiency roll-off at high current densities due to luminescence quenching.
  • This phenomenon limits the practical application of PeLED technology.

Purpose of the Study:

  • To develop a strategy to improve the performance and reduce efficiency roll-off in PeLEDs.
  • To investigate the effect of surface post-treatment on FAPbI3 perovskite films.

Main Methods:

  • A mixed solvent of chlorobenzene (CB)/isopropanol (IPA) was used to dissolve 2-amino-5-iodopyrazine (AIPZ).
  • AIPZ was applied for surface post-treatment of FAPbI3 perovskite films.
  • Characterization of PeLED performance, including external quantum efficiency (EQE) and radiance brightness.

Main Results:

  • The PeLED champion achieved a peak external quantum efficiency (EQE) of 23.2% at 45 mA cm⁻².
  • Device efficiency roll-off was significantly reduced; devices maintained 80% of peak EQE at 460 mA cm⁻².
  • AIPZ treatment balanced charge injection and passivated defects, enhancing radiative recombination.

Conclusions:

  • Surface post-treatment with AIPZ is an effective strategy for improving PeLED performance.
  • This method successfully mitigates the efficiency roll-off issue in PeLEDs.
  • The findings pave the way for practical applications of high-performance PeLEDs.