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

P-N junction

P-N junction

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...

Voltammetry: Factors Affecting Measurements

Voltammetry: Factors Affecting Measurements

A current produced due to the redox reactions of the analyte at the working and auxiliary electrodes is called a faradaic current. The reaction can be divided into two types. The current generated due to the reduction of the analyte is called cathodic current, and it carries a positive charge. In contrast, the current produced by analyte oxidation is known as an anodic current, and it has a negative charge. The applied potential at the working electrode determines the faradaic current flow, and...

You might also read

Related Articles

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

Sort by

Same author

Subnanoscale IrW oxide anodes: breaking immiscibility for high activity and durability in water electrolysis.

Chemical communications (Cambridge, England)·2026

Same author

A masquerader of atrial fibrillation: dual AV nodal non-reentrant tachycardia causing reversible cardiomyopathy.

European heart journal·2026

Same author

Electronic-Structure Modulation in NiRu Alloys To Alleviate Hydrogen Poisoning for Robust Photothermal Ammonia Decomposition.

Journal of the American Chemical Society·2026

Same author

Plasma myeloperoxidase predicts cognitive decline in mild cognitive impairment: a multicenter longitudinal cohort study.

The journals of gerontology. Series A, Biological sciences and medical sciences·2026

Same author

Macrophage ALDH2 drives immunotherapy resistance by silencing CXCL9 through metabolic-epigenetic crosstalk.

Nature communications·2026

Same author

Fetal Presentation of Walker-Warburg Syndrome With a Novel POMT1 Splice-Altering Variant: Antenatal Imaging, Postmortem MRI, Autopsy, and Molecular Correlation.

Clinical case reports·2026

Same journal

Large-scale discovery and annotation of substructure patterns in mass spectrometry profiles.

Nature communications·2026

Same journal

Salmonella SopB suppresses post-transcriptionally regulated cytokine release to reduce early tissue inflammation and delay disease progression.

Nature communications·2026

Same journal

A human-specific microRNA controls the timing of excitatory synaptogenesis.

Nature communications·2026

Same journal

An HMA-like integrated domain in the wheat tandem kinase WTK4 recognises an RNase-like pathogen effector.

Nature communications·2026

Same journal

Learning regularities in noise engages both neural predictive activity and representational changes.

Nature communications·2026

Same journal

The H3K4 methyltransferase KMT2D is an essential cofactor for GATA1 at erythroid gene enhancers.

Nature communications·2026

See all related articles

Search research articles

Related Experiment Video

Updated: Jul 9, 2025

Harvesting Solar Energy by Means of Charge-Separating Nanocrystals and Their Solids

Harvesting Solar Energy by Means of Charge-Separating Nanocrystals and Their Solids

Published on: August 23, 2012

Potential window alignment regulating ion transfer in faradaic junctions for efficient photoelectrocatalysis.

Hongzheng Dong¹, Xiangyu Pan², Yuancai Gong²

¹Eco-materials and Renewable Energy Research Center (ERERC), National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, Nanjing University, Nanjing, 210093, China.

Nature Communications

|December 2, 2023

Summary

This summary is machine-generated.

A new potential window alignment theory improves semiconductor heterojunctions for better photoelectrocatalysis. This model, unlike classic band alignment, accounts for coupled electron and ion transfer, enhancing solar energy applications.

More Related Videos

Preparation of Polyoxometalate-based Photo-responsive Membranes for the Photo-activation of Manganese Oxide Catalysts

Preparation of Polyoxometalate-based Photo-responsive Membranes for the Photo-activation of Manganese Oxide Catalysts

Published on: August 7, 2018

Ambient Method for the Production of an Ionically Gated Carbon Nanotube Common Cathode in Tandem Organic Solar Cells

Ambient Method for the Production of an Ionically Gated Carbon Nanotube Common Cathode in Tandem Organic Solar Cells

Published on: November 5, 2014

Related Experiment Videos

Last Updated: Jul 9, 2025

Harvesting Solar Energy by Means of Charge-Separating Nanocrystals and Their Solids

Harvesting Solar Energy by Means of Charge-Separating Nanocrystals and Their Solids

Published on: August 23, 2012

Preparation of Polyoxometalate-based Photo-responsive Membranes for the Photo-activation of Manganese Oxide Catalysts

Preparation of Polyoxometalate-based Photo-responsive Membranes for the Photo-activation of Manganese Oxide Catalysts

Published on: August 7, 2018

Ambient Method for the Production of an Ionically Gated Carbon Nanotube Common Cathode in Tandem Organic Solar Cells

Ambient Method for the Production of an Ionically Gated Carbon Nanotube Common Cathode in Tandem Organic Solar Cells

Published on: November 5, 2014

Area of Science:

Materials Science
Electrochemistry
Semiconductor Physics

Background:

Band alignment theory is crucial for semiconductor devices like solar cells and photocatalysts.
The faradaic junction model explains coupled electron and ion transfer in semiconductor heterojunctions.
Classic band alignment theory is insufficient for describing coupled electron and ion transfer.

Purpose of the Study:

To develop a new design concept for regulating coupled electron and ion transfer in semiconductor heterojunctions.
To improve the photoelectrocatalytic performance of MoS2/Cd-Cu2ZnSnS4 heterojunction photocathodes.
To introduce potential window alignment theory for ion transfer regulation.

Main Methods:

Proposed a potential window alignment theory.
Investigated the MoS2/Cd-Cu2ZnSnS4 heterojunction photocathode.
Analyzed interface charge transfer direction.

Main Results:

The potential window alignment theory effectively regulates ion transfer.
Photoelectrocatalytic performance of the MoS2/Cd-Cu2ZnSnS4 heterojunction was significantly improved.
A faradaic potential window, not intermediate band position, determines interface charge transfer direction.

Conclusions:

Potential window alignment theory offers a new perspective for designing semiconductor heterojunctions.
This approach enhances solar energy conversion and storage.
The findings are critical for advancing high-performance semiconductor devices.