Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Photoluminescence: Fluorescence and Phosphorescence

Photoluminescence: Fluorescence and Phosphorescence

Photoluminescence is a process where a molecule absorbs light energy and re-emits it in the form of light. This phenomenon occurs when a substance absorbs photons, promoting its electrons to higher energy level excited states, followed by a relaxation process in which the electrons return to their original ground state energy levels and emit light. Photoluminescence is widely observed in various materials, including semiconductors, and organic and inorganic compounds.
A pair of electrons in a...

You might also read

Related Articles

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

Sort by

Same author

Optimizing the Development Process in Direct Photolithography for Efficient PeLEDs.

Small methods·2026

Same author

Quantifying the Electrical Excitation Level of Quantum Dots for Mitigating Electroluminescent Efficiency Roll-Off.

Advanced materials (Deerfield Beach, Fla.)·2026

Same author

Surface-ligand-triggered synthetic control of defects in nanocrystals toward high-efficiency blue electroluminescence.

Innovation (Cambridge (Mass.))·2026

Same author

Molecular Pinning Effect in Composite Self-Assembled Monolayers Enabling Efficient Perovskite/TOPCon Tandem Solar Cells.

Angewandte Chemie (International ed. in English)·2026

Same author

A synergistic molecular lock strategy enables efficient and durable wide bandgap perovskite/TOPCon tandem solar cells.

Chemical communications (Cambridge, England)·2026

Same author

Memristive Physical Reservoir Computing.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026

Same journal

Nongenetic <i>in Vivo</i> Bimodal Neuromodulation via Photothermal Gold Nanorods and a Multifunctional Fiber Neural Probe.

ACS nano·2026

Same journal

Electric-Field-Driven Ferredoxin 1-Independent Cuproptosis Induction Overcomes Therapy-Induced Resistance in Glioblastoma.

ACS nano·2026

Same journal

Connecting and Engaging.

ACS nano·2026

Same journal

Efficient Photocatalytic Methane Conversion to Liquid Oxygenates by Constructing Charge-Directed Transfer Pathways.

ACS nano·2026

Same journal

Mechanochemically Coupled Multidimensional Modulation of Calcium Overload.

ACS nano·2026

Same journal

Electrical Control and High-Bias Enhancement of Magnetoresistance in van der Waals Antiferromagnetic Spin-Filter Tunnel Field-Effect Transistor.

ACS nano·2026

See all related articles

Search research articles

Related Experiment Video

Updated: Jun 16, 2025

Enhanced Electron Injection and Exciton Confinement for Pure Blue Quantum-Dot Light-Emitting Diodes by Introducing Partially Oxidized Aluminum Cathode

Enhanced Electron Injection and Exciton Confinement for Pure Blue Quantum-Dot Light-Emitting Diodes by Introducing Partially Oxidized Aluminum Cathode

Published on: May 31, 2018

Blue Perovskite Lasing Derived from Bound Excitons through Defect Engineering.

Guochao Lu¹, Xinyang Wang¹, Xinyi Jiang¹

¹School of Materials Science and Engineering, State Key Laboratory of Silicon and Advanced Semiconductor Materials, Zhejiang University, Hangzhou 310027, P. R. China.

|August 15, 2024

Summary

This summary is machine-generated.

Defect engineering in all-inorganic perovskite films using octylammonium bromide (OABr) additives enables efficient blue stimulated emission. This approach utilizes defects to create bound excitons, paving the way for high-performance blue perovskite lasers.

Keywords:

blue lasing bound excitons defect engineering perovskite films stimulated emission

More Related Videos

Facile Synthesis of Colloidal Lead Halide Perovskite Nanoplatelets via Ligand-Assisted Reprecipitation

Facile Synthesis of Colloidal Lead Halide Perovskite Nanoplatelets via Ligand-Assisted Reprecipitation

Published on: October 1, 2019

Low Pressure Vapor-assisted Solution Process for Tunable Band Gap Pinhole-free Methylammonium Lead Halide Perovskite Films

Low Pressure Vapor-assisted Solution Process for Tunable Band Gap Pinhole-free Methylammonium Lead Halide Perovskite Films

Published on: September 8, 2017

Related Experiment Videos

Last Updated: Jun 16, 2025

Enhanced Electron Injection and Exciton Confinement for Pure Blue Quantum-Dot Light-Emitting Diodes by Introducing Partially Oxidized Aluminum Cathode

Enhanced Electron Injection and Exciton Confinement for Pure Blue Quantum-Dot Light-Emitting Diodes by Introducing Partially Oxidized Aluminum Cathode

Published on: May 31, 2018

Facile Synthesis of Colloidal Lead Halide Perovskite Nanoplatelets via Ligand-Assisted Reprecipitation

Facile Synthesis of Colloidal Lead Halide Perovskite Nanoplatelets via Ligand-Assisted Reprecipitation

Published on: October 1, 2019

Low Pressure Vapor-assisted Solution Process for Tunable Band Gap Pinhole-free Methylammonium Lead Halide Perovskite Films

Low Pressure Vapor-assisted Solution Process for Tunable Band Gap Pinhole-free Methylammonium Lead Halide Perovskite Films

Published on: September 8, 2017

Area of Science:

Materials Science
Optoelectronics
Photonics

Background:

All-inorganic perovskite films are promising laser gain materials due to their optoelectronic properties and solution processability.
Blue perovskite lasing performance is limited by a high density of defects.

Purpose of the Study:

To demonstrate defect engineering for enhanced blue stimulated emission in perovskite films.
To utilize defects to form bound excitons for blue lasing applications.

Main Methods:

Introducing deep-level defects in mixed-Rb/Cs perovskite films using octylammonium bromide (OABr) additives.
Fabricating vertical-cavity surface-emitting lasers (VCSELs) using engineered perovskite films.

Main Results:

Achieved blue amplified spontaneous emission (ASE) from defect-related bound excitons.
Demonstrated a low threshold of 13.5 μJ/cm² and high optical gain of 744.7 cm^-1.
Obtained single-mode blue emission at 482 nm from a VCSEL.

Conclusions:

Defect engineering is a viable strategy for developing high-performance blue perovskite laser gain materials.
The use of OABr additives facilitates the creation of bound excitons for efficient blue lasing.
This work offers insights for advancing blue lasing in perovskite-based optoelectronic devices.