Quantifying carbon site switching dynamics in GaN by electron holography
Year: 2025
Type: article
Abstract: Off-axis electron holography is utilized to identify point defect reactions and quantify their dynamics by probing the time and temperature dependence of the Fermi level upon annealing. The methodology is illustrated using implanted carbon (C) in GaN, where a site switching phenomenon of C, from substitutional to interstitial, is found to be responsible for lifting the Fermi-level pinning in the lower part of the band gap. The carbon site switching process has an activation barrier energy of 2.27 ± 0.26 eV .
Source: Physical Review Research
Authors: K. Ji, M. Schnedler, Q. Lan, J.-F. Carlin, R. Butté, N. Grandjean, R. E. Dunin-Borkowski, Ph. Ebert
Language: English
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,625
OpenAlex ID: W4407871207