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

Thermal and Photochemical Electrocyclic Reactions: Overview

Thermal and Photochemical Electrocyclic Reactions: Overview

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.

Photoelectric Effect

Photoelectric Effect

When light of a particular wavelength strikes a metal surface, electrons are emitted. This is called the photoelectric effect. The minimum frequency of light that can cause such emission of electrons is called the threshold frequency, which is specific to the metal. Light with a frequency lower than the threshold frequency, even if it is of high intensity, cannot initiate the emission of electrons. However, when the frequency is higher than the threshold value, the number of electrons ejected...

Photoluminescence: Applications

Photoluminescence: Applications

Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...

You might also read

Related Articles

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

Sort by

Same author

Stabilizing Ru Atomic Clusters and Activating Interfacial Water Structure via Bridged p-Block In-N<sub>3</sub>O<sub>1</sub> Single Sites for High-Performance Alkaline Fuel Cells.

Angewandte Chemie (International ed. in English)·2026

Same author

Polymeric Hydrogel Interphase Enables Transport-Compatible Fe Stabilization for Hectowatt-Scale Alkaline Water Electrolysis.

Journal of the American Chemical Society·2026

Same author

Postoperative anlotinib plus radiotherapy in patients with newly diagnosed, unmethylated O<sup>6</sup>-methylguanine-DNA methyltransferase glioblastoma: A single-arm, phase 2 study.

Cancer·2026

Same author

Early clinical diagnosis of congenital insensitivity to pain with anhidrosis in an infant: a case report.

Frontiers in pediatrics·2026

Same author

Multi-Omics Analysis Reveals Age-Related Enhancements in Gut Morphology, Microbiome, and Metabolism of Tibetan Pigs.

Microorganisms·2026

Same author

Thiol-Mediated Compositional Control and Coherent Shelling of Ag-In-Ga-S Quantum Dots for High-Performance Light Emitting Diodes.

Small (Weinheim an der Bergstrasse, Germany)·2026

Same journal

One-Pot Depolymerization, Demethylation, and Phenolation of Lignin for Bioactive Polyphenol Production.

ChemSusChem·2026

Same journal

Stabilizing Ni-O Through Bi Doping in LaNiO<sub>3</sub> Perovskite Oxide for Efficient Anion Exchange Membrane Water Electrolysis.

ChemSusChem·2026

Same journal

Cobalt-Doped Manganese Oxide/Ruthenium Oxide Composite Interface for Acidic Oxygen Evolution Reaction.

ChemSusChem·2026

Same journal

Hierarchically Engineered NiSe<sub>2</sub>-CuFeO<sub>2</sub> Heterostructures on Biomass-Derived Carbonized Wood for Efficient Ethanol-Assisted Water Electrolysis.

ChemSusChem·2026

Same journal

Uniform Lignin-Epoxy Hybrid Colloidal Spheres With Unprecedented pH 14 Alkaline Resistance: Facile Synthesis for Sustainable Photonic Materials.

ChemSusChem·2026

Same journal

Capacitive Deionization for Brackish Water Purification Using Asymmetric Charge-Immobilized Activated Carbon With Safe Hydrophilic Binders.

ChemSusChem·2026

See all related articles

Search research articles

Related Experiment Video

Updated: Sep 29, 2025

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions

Published on: October 5, 2019

Engineered Environment-Friendly Colloidal Core/Shell Quantum Dots for High-Efficiency Solar-Driven

Zhihang Long¹, Xin Tong^1,2, Rui Wang¹

¹Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, 610054, P. R. China.

|March 23, 2022

Summary

This summary is machine-generated.

Eco-friendly core/shell quantum dots (QDs) show promise for solar hydrogen production. Engineering the shell thickness improved efficiency and durability in photoelectrochemical cells, demonstrating potential for cost-effective solar energy conversion.

Keywords:

energy conversion hydrogen evolution nanostructures photoelectrochemistry quantum dots

More Related Videos

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

Photochemical Oxidative Growth of Iridium Oxide Nanoparticles on CdSe@CdS Nanorods

Photochemical Oxidative Growth of Iridium Oxide Nanoparticles on CdSe@CdS Nanorods

Published on: February 11, 2016

Related Experiment Videos

Last Updated: Sep 29, 2025

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions

Published on: October 5, 2019

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

Photochemical Oxidative Growth of Iridium Oxide Nanoparticles on CdSe@CdS Nanorods

Photochemical Oxidative Growth of Iridium Oxide Nanoparticles on CdSe@CdS Nanorods

Published on: February 11, 2016

Area of Science:

Materials Science
Nanotechnology
Photochemistry

Background:

"Green" colloidal quantum dots (QDs) offer an eco-friendly and cost-effective approach to solar energy conversion.
Photoelectrochemical (PEC) cells are being explored for efficient solar-to-hydrogen production.

Purpose of the Study:

To synthesize eco-friendly AgInSe (AISe)/ZnSe core/shell QDs for solar hydrogen production.
To investigate the effect of ZnSe shell thickness on the optoelectronic properties and performance of AISe/ZnSe QDs in PEC cells.

Main Methods:

Synthesis of wurtzite (WZ) phase AISe/ZnSe core/shell QDs.
Engineering the ZnSe shell thickness for surface defect passivation.
Fabrication and testing of a PEC device using the core/shell QDs under AM 1.5G illumination.

Main Results:

Optimized ZnSe shell thickness effectively passivated AISe core surface defects, suppressing charge recombination.
The AISe/ZnSe core/shell QDs-based PEC device achieved a maximum photocurrent density of 7.5 mA cm⁻².
The device demonstrated improved photo-excited electron extraction efficiency and long-term durability.

Conclusions:

Tailored AISe/ZnSe core/shell QDs exhibit promising optoelectronic properties for solar energy conversion.
These eco-friendly QDs are potential light sensitizers for efficient and cost-effective solar hydrogen production.
The study highlights the importance of shell engineering in enhancing QD performance for PEC applications.