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

You might also read

Related Articles

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

Sort by
Same author

Wafer-Scale Polarity Engineering of Nitrides Enabled High-Mobility Two-Dimensional Electron Gas and Defective Luminescence.

ACS applied materials & interfaces·2025
Same author

Probing phonon transport dynamics across an interface by electron microscopy.

Nature·2025
Same author

Atomic Evolution Mechanism and Suppression of Edge Threading Dislocations in Nitride Remote Heteroepitaxy.

Nano letters·2024
Same author

Memory-electroluminescence for multiple action-potentials combination in bio-inspired afferent nerves.

Nature communications·2024
Same author

Enhancing Magnetic Damping under GaAs Band-Edge Photoexcitation in a Co<sub>2</sub>FeAl/<i>n</i>-GaAs Heterojunction.

ACS applied materials & interfaces·2024
Same author

Principles for 2D-Material-Assisted Nitrides Epitaxial Growth.

Advanced materials (Deerfield Beach, Fla.)·2023

Related Experiment Video

Updated: Aug 20, 2025

Experimental Methods for Efficient Solar Hydrogen Production in Microgravity Environment
11:38

Experimental Methods for Efficient Solar Hydrogen Production in Microgravity Environment

Published on: December 3, 2019

7.7K

Microstructure-regulated inverted pyramidal Si photocathodes for efficient hydrogen generation.

Yumeng Liu1,2, Shuai Zhao1,2, Di Zhang1,2

  • 1State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China. gdyuan@semi.ac.cn.

Nanoscale
|November 21, 2022
PubMed
Summary
This summary is machine-generated.

Black silicon electrodes with inverted pyramid arrays (SiIPs) show promise for water splitting. Microstructure control via copper-assisted chemical etching (Cu-ACE) optimizes performance, leading to enhanced hydrogen evolution reaction (HER) activity.

More Related Videos

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

14.2K
Integration of Light Trapping Silver Nanostructures in Hydrogenated Microcrystalline Silicon Solar Cells by Transfer Printing
08:45

Integration of Light Trapping Silver Nanostructures in Hydrogenated Microcrystalline Silicon Solar Cells by Transfer Printing

Published on: November 9, 2015

7.9K

Related Experiment Videos

Last Updated: Aug 20, 2025

Experimental Methods for Efficient Solar Hydrogen Production in Microgravity Environment
11:38

Experimental Methods for Efficient Solar Hydrogen Production in Microgravity Environment

Published on: December 3, 2019

7.7K
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

14.2K
Integration of Light Trapping Silver Nanostructures in Hydrogenated Microcrystalline Silicon Solar Cells by Transfer Printing
08:45

Integration of Light Trapping Silver Nanostructures in Hydrogenated Microcrystalline Silicon Solar Cells by Transfer Printing

Published on: November 9, 2015

7.9K

Area of Science:

  • Materials Science
  • Electrochemistry
  • Renewable Energy

Background:

  • Photoelectrochemical (PEC) water splitting is crucial for sustainable hydrogen production.
  • Black silicon electrodes with inverted pyramid arrays (SiIPs) offer excellent photoelectric properties for PEC applications.
  • Controlling the microstructure of SiIPs is key to enhancing their efficiency.

Purpose of the Study:

  • To investigate the impact of microstructure regulation on SiIP photocathode performance.
  • To understand micro-pit formation during copper-assisted chemical etching (Cu-ACE).
  • To optimize SiIP photocathodes for efficient hydrogen evolution reaction (HER).

Main Methods:

  • Fabrication of SiIP photocathodes using Cu-ACE.
  • Microstructure characterization and analysis of SiIPs.
  • Optimization of SiIP microstructures through etchant composition and alkali post-treatment.
  • Construction of SiIPs/TiO2/MoS2 heterojunctions.

Main Results:

  • Micro-pits formed during Cu-ACE significantly influence electrode performance.
  • SiIP microstructures were effectively tuned by controlling etching and post-treatment.
  • Optimized SiIP photocathodes showed reduced onset potential for HER (-0.35 V vs. RHE).
  • The SiIPs/TiO2/MoS2 cathode achieved a photocurrent density of 9.45 mA cm⁻² at zero overpotential for 18 hours.

Conclusions:

  • Microstructure morphology critically dictates SiIP-based electrode performance.
  • Understanding and controlling micro-pit formation is vital for SiIP optimization.
  • The developed SiIPs/TiO2/MoS2 heterojunction demonstrates potential for unbiased overall water splitting.