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

Types of Semiconductors01:20

Types of Semiconductors

1.3K
Intrinsic semiconductors are highly pure materials with no impurities. At absolute zero, these semiconductors behave as perfect insulators because all the valence electrons are bound, and the conduction band is empty, disallowing electrical conduction. The Fermi level is a concept used to describe the probability of occupancy of energy levels by electrons at thermal equilibrium. In intrinsic semiconductors, the Fermi level is positioned at the midpoint of the energy gap at absolute zero. When...
1.3K
Thermal and Photochemical Electrocyclic Reactions: Overview01:26

Thermal and Photochemical Electrocyclic Reactions: Overview

2.9K
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.
2.9K
Photochemical Electrocyclic Reactions: Stereochemistry01:26

Photochemical Electrocyclic Reactions: Stereochemistry

2.2K
The absorption of UV–visible light by conjugated systems causes the promotion of an electron from the ground state to the excited state. Consequently, photochemical electrocyclic reactions proceed via the excited-state HOMO rather than the ground-state HOMO. Since the ground- and excited-state HOMOs have different symmetries, the stereochemical outcome of electrocyclic reactions depends on the mode of activation; i.e., thermal or photochemical.
Selection Rules: Photochemical Activation
2.2K
Metal-Semiconductor Junctions01:24

Metal-Semiconductor Junctions

852
The contact of metal and semiconductor can lead to the formation of a junction with either Schottky or Ohmic behavior.
Schottky Barriers
Schottky barriers arise when a metal with a work function (Φm) contacts a semiconductor with a different work function (Φs). Initially, electrons transfer until the Fermi levels of the metal and semiconductor align at equilibrium. For instance, if Φm > Φs, the semiconductor Fermi level is higher than the metal's before contact. The...
852
Photoluminescence: Applications01:14

Photoluminescence: Applications

958
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...
958
Schottky Barrier Diode01:27

Schottky Barrier Diode

892
Schottky barrier diodes are specialized semiconductor devices characterized by their unique construction. This construction involves combining a metal layer with a moderately doped n-type semiconductor material. This combination leads to the formation of a Schottky barrier, a pivotal element that defines the diode's operational characteristics. The core functionality of Schottky barrier diodes is their capacity to allow current to flow in only one direction due to their distinctive...
892

You might also read

Related Articles

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

Sort by
Same author

Interplay of Magnetocrystalline Anisotropy and Kondo Interaction in Square-Net Lattice CeZn<sub>0.65</sub>Sb<sub>2</sub>.

Inorganic chemistry·2026
Same author

Bridging ancestry gaps in genomic risk prediction with tabular foundation models.

Bioinformatics (Oxford, England)·2026
Same author

<b>Lectotype designation for <i>Fowlea yunnanensis</i> (Anderson, 1879) (Squamata: Serpentes: Colubridae: Natricinae) and the first report of the species from India</b>.

Zootaxa·2026
Same author

<b>Redescription of a poorly known soft scale insect, <i>Pulvinaria ixorae</i> Green (Hemiptera: Coccomorpha: Coccidae) from India, with biological notes and a new distribution record</b>.

Zootaxa·2026
Same author

<b>Designation of a lectotype for <i>Trimeresurus porphyraceus</i> Blyth, 1861 (Reptilia: Viperidae) and its recognition as a junior synonym of <i>Trimeresurus erythrurus</i> (Cantor, 1839)</b>.

Zootaxa·2026
Same author

BRAF Inhibition in Congenital Nevi and Neural Melanosis.

JAMA dermatology·2026

Related Experiment Video

Updated: Jan 5, 2026

Harvesting Solar Energy by Means of Charge-Separating Nanocrystals and Their Solids
13:29

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

Published on: August 23, 2012

14.6K

Core-Shell Type Semiconducting Heterostructures for Visible Light Photocatalysis.

Ashok Kumar Ganguli1, Anirban Das1, Kalithasan Natarajan1

  • 1Department of Chemistry, Indian Institute of Technology - Delhi, Hauz Khas, New Delhi, 110016, India.

Chemical Record (New York, N.Y.)
|October 18, 2019
PubMed
Summary

Researchers developed methods for synthesizing controlled nanostructures, focusing on metal oxides and oxalates. Core-shell nanostructures were explored for visible light photocatalysis and photoelectrochemical applications.

Keywords:
NanostructuresPhotocatalysisPhotoelectrochemistryReviewWater Splitting

More Related Videos

Synthesis and Performance Evaluations of ZnCoS/ZnCdS with Twin Crystal Structure for Multifunctional Redox Photocatalysis in Energy Applications
09:22

Synthesis and Performance Evaluations of ZnCoS/ZnCdS with Twin Crystal Structure for Multifunctional Redox Photocatalysis in Energy Applications

Published on: July 25, 2025

610
Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions
10:21

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

Published on: October 5, 2019

8.8K

Related Experiment Videos

Last Updated: Jan 5, 2026

Harvesting Solar Energy by Means of Charge-Separating Nanocrystals and Their Solids
13:29

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

Published on: August 23, 2012

14.6K
Synthesis and Performance Evaluations of ZnCoS/ZnCdS with Twin Crystal Structure for Multifunctional Redox Photocatalysis in Energy Applications
09:22

Synthesis and Performance Evaluations of ZnCoS/ZnCdS with Twin Crystal Structure for Multifunctional Redox Photocatalysis in Energy Applications

Published on: July 25, 2025

610
Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions
10:21

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

Published on: October 5, 2019

8.8K

Area of Science:

  • Materials Science
  • Nanotechnology
  • Chemistry

Background:

  • Directed synthesis of nanostructures is crucial for advanced applications.
  • Controlling nanoparticle morphology impacts material properties and performance.
  • Harnessing visible light for energy applications requires efficient light-harvesting materials.

Purpose of the Study:

  • To detail methods for the directed synthesis of morphologically controlled nanostructures.
  • To explore the use of core-shell nanostructures for visible light photocatalysis and photoelectrochemical applications.
  • To classify and discuss nanostructures based on their morphology.

Main Methods:

  • Low-temperature microemulsion and hydrothermal synthesis techniques.
  • Morphology control through parameters like solvent choice and temperature.
  • Sensitization of wide bandgap semiconductors using narrow bandgap materials or surface plasmon resonance active metals.

Main Results:

  • Successful synthesis of nanostructured metal oxides and metal oxalates with well-defined morphologies.
  • Demonstration of core-shell nanostructures for efficient visible light harvesting.
  • Classification of results based on spherical, cubic, and rod morphologies.

Conclusions:

  • Low-temperature synthesis methods enable precise control over nanostructure morphology.
  • Core-shell architectures are effective for visible light-driven photocatalysis and photoelectrochemistry.
  • Further research into nanostructure design can unlock new applications in energy conversion.