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 Videos

Molecular hydrogen in a-si:H

Fedders1, Leopold, Chan

  • 1Department of Physics, Washington University, St. Louis, Missouri 63130, USA.

Physical Review Letters
|September 16, 2000
PubMed
Summary

Nearly 40% of hydrogen in amorphous silicon films exists as molecular hydrogen. This discovery impacts understanding of defects and hydrogen movement in these materials.

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

A Petrified Bean in the Urethra-Removed by Incision.

Medical examiner (Philadelphia, Pa.)·2023
Same author

Case of Pregnancy, Notwithstanding Previous Severe Injury to the Organs Concerned in Childbirth.

Medical examiner (Philadelphia, Pa.)·2023
Same author

On Painful Distension of the Vagina after the Birth of a Child.

Medical examiner (Philadelphia, Pa.)·2023
Same author

Highly selective catalytic intermolecular reductive coupling of alkynes and aldehydes

Organic letters·2001
Same author

Comment on "Algebraic perturbation theory for polar fluids: A model for the dielectric constant"

Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics·2001
Same author

Combined intraoperative alcohol celiac ablation and lateral pancreaticojejunostomy for chronic pancreatitis.

Current surgery·2000

Area of Science:

  • Materials Science
  • Solid State Physics
  • Semiconductor Physics

Background:

  • Hydrogenated amorphous silicon (a-Si:H) is crucial for electronic devices.
  • Understanding hydrogen's role is key to improving material stability and performance.
  • Previous models did not fully account for molecular hydrogen species.

Purpose of the Study:

  • To investigate the forms and locations of hydrogen within high-quality a-Si:H films.
  • To quantify the presence of molecular hydrogen and its bonding environment.
  • To assess the implications for material properties and defect formation.

Main Methods:

  • Advanced spectroscopic techniques were employed to probe hydrogen bonding.
  • Analysis focused on identifying signatures of molecular hydrogen (H2).
  • Hydrogen distribution was correlated with film microstructure.

Main Results:

  • Nearly 40% of hydrogen exists as molecular hydrogen (H2) in a-Si:H.
  • These H2 molecules are primarily trapped at tetragonal T sites.
  • The majority of H2 resides in the less-clustered hydrogen component.

Conclusions:

  • A significant fraction of hydrogen in a-Si:H exists as molecular H2.
  • This finding necessitates a revision of models for hydrogen behavior.
  • The presence of H2 impacts understanding of light-induced defects and hydrogen diffusion.

Related Experiment Videos