What is it about?
The role of hydrogen in semiconductors and its location within the lattice have long been of interest. We investigated the dissolution of hydrogen into the oxide semiconductor MgIn₂O₄ and the resulting phenomena through experiments and first-principles calculations.
Featured Image
Photo by Khamkéo on Unsplash
Why is it important?
We have experimentally observed for the first time that hydrogen acts as a donor in the oxide semiconductor MgIn₂O₄, based on its dissolution into the material and the resulting increase in electronic conductivity, leading to the generation of electrons and protons. First-principles calculations further clarified the donor behavior of hydrogen and its preferred site within the MgIn₂O₄ lattice.
Perspectives
We hope this article contributes to a deeper understanding of the role of hydrogen in oxides. Protons in oxides typically become mobile at elevated temperatures, and thus, oxide semiconductors that incorporate dissolved hydrogen are likely to exhibit mixed protonic and electronic conduction. Given the significance of such materials in electrochemical devices, this behavior may open up new avenues for future applications.
Takahisa Omata
Tohoku Daigaku
Read the Original
This page is a summary of: Role of hydrogen in the n-type oxide semiconductor MgIn2O4: Experimental observation of electrical conductivity and first-principles insight, APL Materials, April 2025, American Institute of Physics,
DOI: 10.1063/5.0253161.
You can read the full text:
Contributors
The following have contributed to this page
