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

Zener Diodes

Zener Diodes

Zener diodes are specialized semiconductor devices designed to operate in the reverse breakdown region, where they allow current to flow into the cathode, making it positive relative to the anode. This reverse operation distinguishes Zener diodes from conventional diodes and enables their use in various applications, most notably as voltage regulators. One of the defining characteristics of Zener diodes is their nearly vertical I-V (current-voltage) characteristic curve above a certain...

The Ideal Diode

The Ideal Diode

A diode is a semiconductor device that allows current to flow in one direction only, making it a crucial component in electronic circuits for controlling the direction of current flow. An ideal diode is a simplified version of a real diode used to understand how diodes work in circuits. It possesses two terminals: the positive anode and the cathode, which is negative. When a positive voltage is applied to the anode relative to the cathode, the diode is in a forward-biased state, allowing...

Diode: Forward bias

Diode: Forward bias

In semiconductor devices, diodes play a crucial role in directing current flow, and its operation is primarily categorized into forward bias and reverse bias. A diode is said to be forward-biased when its p-type region is connected to the positive terminal of a battery and its n-type region is linked to the negative terminal. This configuration reduces the potential barrier within the diode, allowing current to flow easily from the p to the n-type region.
The behavior of a diode in forward bias...

Performing a Simple Data Analysis using MS-Excel Function

Performing a Simple Data Analysis using MS-Excel Function

Microsoft Excel offers a suite of functions and tools ideal for statistical analysis, making it accessible to students and researchers. This article outlines fundamental Excel functions pivotal for data analysis.
SUM: This function calculates the total sum of a range of values. It's the foundation for aggregating data, essential for determining overall trends and totals in datasets.
AVERAGE: It computes the mean value of a given set of numbers, providing a quick insight into the central...

Modeling of Diode Forward Characteristics

Modeling of Diode Forward Characteristics

Understanding the behavior of diodes when forward-biased is a fundamental aspect of electronic circuit design and analysis. This analysis primarily utilizes two models: the exponential diode model and the constant-voltage-drop model. The exponential model comes into play when the source voltage exceeds 0.5 volts, pushing the diode current to rise exponentially above the saturation current. This relationship is graphically depicted in the current-voltage (I-V) curve, illustrating the diode's...

Diode: Reverse bias

Diode: Reverse bias

A diode is reverse-biased when the positive terminal of an external voltage source is connected to the n-type material and the negative terminal to the p-type material. This configuration opposes the natural direction of current flow through the diode, effectively increasing the width of the depletion region and the barrier potential. The reverse bias condition produces a minimal leakage current, primarily due to minority charge carriers. This leakage becomes significant when the reverse...

You might also read

Related Articles

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

Sort by

Same author

Bidentate Hole-Transporting Materials for Interface Passivation and High-Efficiency Inverted Perovskite Solar Cells.

ChemSusChem·2026

Same author

Amplified Spontaneous Emission Enhancement in FAPbI<sub>3</sub> Nanocrystal Films via PMMA and Mechanical Tunability on Flexible PET.

ACS applied materials & interfaces·2026

Same author

Ultra-low nickel-doped copper aerogels as highly efficient and stable electrocatalysts for the formic acid oxidation reaction.

Nanoscale·2026

Same author

Animal-origin-free method for generating blood vessel organoids.

Scientific reports·2026

Same author

Co-Assembly with Donor-Acceptor Self-Assembled Monolayers to Enhance Interfacial Hole Extraction, Wettability, and Crystallization in Inverted Perovskite Solar Cells.

Small (Weinheim an der Bergstrasse, Germany)·2026

Same author

Flexible pressure sensing systems empowered by artificial intelligence: materials, devices and emerging applications.

Materials horizons·2026

Search research articles

Related Experiment Video

Updated: Jan 24, 2026

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

Enhancing Sky-Blue Perovskite Light-Emitting Diode Performance through Guanidinium-Based Dual-Functional Molecular

Yu-Hsiang Teng¹, Hou Li¹, Chiung-Han Chen¹

¹Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan.

ACS Applied Materials & Interfaces

|January 22, 2026

Summary

This summary is machine-generated.

Molecular engineering with 4-guanidinobenzoic acid hydrochloride (GBAC) significantly boosts sky-blue perovskite light-emitting diodes (PeLEDs). This strategy improves film quality and suppresses defects, leading to enhanced efficiency and stability in blue PeLEDs.

Keywords:

defect passivation dual-functional molecular engineering perovskite light-emitting diodes phase distribution regulation sky-blue emission

More Related Videos

Production and Characterization of Vacuum Deposited Organic Light Emitting Diodes

Production and Characterization of Vacuum Deposited Organic Light Emitting Diodes

Published on: November 16, 2018

An In-House-Built and Light-Emitting-Diode-Based Photodynamic Therapy Device for Enhancing Verteporfin Cytotoxicity in a 2D Cell Culture Model

An In-House-Built and Light-Emitting-Diode-Based Photodynamic Therapy Device for Enhancing Verteporfin Cytotoxicity in a 2D Cell Culture Model

Published on: January 13, 2023

Related Experiment Videos

Last Updated: Jan 24, 2026

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

Production and Characterization of Vacuum Deposited Organic Light Emitting Diodes

Production and Characterization of Vacuum Deposited Organic Light Emitting Diodes

Published on: November 16, 2018

An In-House-Built and Light-Emitting-Diode-Based Photodynamic Therapy Device for Enhancing Verteporfin Cytotoxicity in a 2D Cell Culture Model

An In-House-Built and Light-Emitting-Diode-Based Photodynamic Therapy Device for Enhancing Verteporfin Cytotoxicity in a 2D Cell Culture Model

Published on: January 13, 2023

Area of Science:

Materials Science
Optoelectronics
Nanotechnology

Background:

Perovskite light-emitting diodes (PeLEDs) offer high efficiency and tunable emission for displays and lighting.
Achieving stable and efficient blue emission in PeLEDs is challenging due to issues like poor phase purity and trap density.

Purpose of the Study:

To develop a dual-functional molecular engineering strategy for enhancing blue PeLED performance.
To utilize 4-guanidinobenzoic acid hydrochloride (GBAC) as both an interfacial layer and a bulk additive.

Main Methods:

GBAC was applied as a buried interfacial layer to improve film morphology and energy level alignment.
GBAC was incorporated as a bulk additive to passivate Pb2+ trap states and control perovskite phase formation.
Device performance was evaluated based on spectral stability, turn-on voltage, and external quantum efficiency.

Main Results:

The interfacial GBAC layer improved surface wettability, precursor spreading, film crystallinity, and energy level alignment.
The bulk GBAC additive passivated Pb2+ traps and promoted the formation of desired perovskite phases, enhancing energy funneling.
Devices with dual GBAC treatment showed improved spectral stability, reduced turn-on voltage, and achieved a sky-blue external quantum efficiency of 10.6%.

Conclusions:

Dual-functional molecular engineering with GBAC is an effective strategy for overcoming challenges in blue PeLEDs.
This approach significantly enhances the efficiency and stability of sky-blue PeLEDs, demonstrating a >60% improvement.
GBAC holds promise for advancing next-generation display and lighting technologies.