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 Experiment Video

Updated: Feb 27, 2026

Synthesis of Hierarchical ZnO/CdSSe Heterostructure Nanotrees
06:50

Synthesis of Hierarchical ZnO/CdSSe Heterostructure Nanotrees

Published on: November 29, 2016

10.5K

Optical Emission in Hexagonal SiGe Nanowires.

Xavier Cartoixà1, Maurizia Palummo2, Håkon Ikaros T Hauge3

  • 1Departament d'Enginyeria Electrònica, Universitat Autònoma de Barcelona , 08193 Bellaterra, Barcelona, Spain.

Nano Letters
|June 28, 2017
PubMed
Summary

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

Hexagonal SiGe Quantum Dots in Nanowires.

Nano letters·2026
Same author

Quantum Light Emission from GaAs<sub><i>x</i></sub>P<sub>1-<i>x</i></sub> Quantum Dots in Wurtzite GaP Nanowires.

ACS applied materials & interfaces·2026
Same author

Protective Role of Oxides on Pb-Free Halide Perovskite Surfaces: Interfacial Effects and Excitonic Optical Properties from First-Principles.

ACS applied materials & interfaces·2026
Same author

Quantifying Strain and Its Effect on Charge Transport in Ge/Si Core/Shell Nanowires.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
Same author

Single-shot parity readout of a minimal Kitaev chain.

Nature·2026
Same author

Probing Majorana localization of a phase-controlled three-site Kitaev chain with an additional quantum dot.

Nature communications·2026

Mixing hexagonal silicon and germanium creates a direct bandgap material. This breakthrough enables efficient light emission, paving the way for advanced silicon optoelectronics.

Area of Science:

  • Materials Science
  • Condensed Matter Physics
  • Nanotechnology

Background:

  • Nanowire synthesis now allows access to high-pressure crystal phases.
  • Silicon's cubic phase exhibits poor light emission, limiting optoelectronic applications.

Purpose of the Study:

  • To investigate the electronic and optical properties of mixed hexagonal silicon and germanium phases.
  • To determine the feasibility of silicon-based optoelectronics through bandgap engineering.

Main Methods:

  • First-principles calculations using density functional theory (DFT).
  • Many-body perturbation theory (MBPT) for electronic structure analysis.
  • Calculation of radiative lifetimes and comparison with nonradiative recombination.
Keywords:
DFTNanowireshexagonal siliconoptical emission

More Related Videos

Resonance Raman Spectroscopy of Extreme Nanowires and Other 1D Systems
07:44

Resonance Raman Spectroscopy of Extreme Nanowires and Other 1D Systems

Published on: April 28, 2016

15.6K
Silicon Nanowires and Optical Stimulation for Investigations of Intra- and Intercellular Electrical Coupling
08:58

Silicon Nanowires and Optical Stimulation for Investigations of Intra- and Intercellular Electrical Coupling

Published on: January 28, 2021

5.0K

Related Experiment Videos

Last Updated: Feb 27, 2026

Synthesis of Hierarchical ZnO/CdSSe Heterostructure Nanotrees
06:50

Synthesis of Hierarchical ZnO/CdSSe Heterostructure Nanotrees

Published on: November 29, 2016

10.5K
Resonance Raman Spectroscopy of Extreme Nanowires and Other 1D Systems
07:44

Resonance Raman Spectroscopy of Extreme Nanowires and Other 1D Systems

Published on: April 28, 2016

15.6K
Silicon Nanowires and Optical Stimulation for Investigations of Intra- and Intercellular Electrical Coupling
08:58

Silicon Nanowires and Optical Stimulation for Investigations of Intra- and Intercellular Electrical Coupling

Published on: January 28, 2021

5.0K

Main Results:

  • A suitable mixture of hexagonal Si and hexagonal Ge results in a direct bandgap.
  • The calculated transition is optically permitted.
  • Optical emission is predicted to be the dominant recombination mechanism.

Conclusions:

  • Engineered hexagonal SiGe alloys offer a pathway to efficient light emission.
  • This research overcomes limitations of cubic silicon for optoelectronic devices.
  • Development of novel silicon-based optoelectronic devices is now feasible.