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Deep chalcogen donors and electron localization in aluminum nitride

Journal Article · · Journal of Physics. Condensed Matter
 [1];  [2]
  1. Naval Research Lab. (NRL), Washington, DC (United States)
  2. Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
We show with hybrid density functional theory calculations that chalcogen donors other than oxygen (i.e. SN , SeN , and TeN ) give rise to deep donor states in aluminum nitride. These donors trap a localized electron in their neutral charge state, leading to deep (+/0 ) donor levels that are 0.45 eV or more from the conduction-band edge. As such, this behavior is distinct from the DX behavior leads to deep (+/−) levels which affects other donors such as ON and SiAl . We highlight how these results hint at the formation of small electron polarons in AlN, which are found to be unstable in the bulk, but metastable when bound to donor dopants like SiAl and the chalocogens, with activation energies on the order of 0.2–0.3 eV. These results indicate that S, Se, and Te are not shallow donor dopants in aluminum nitride and identify origins of the experimentally observed ∼200–300 meV activation energies for dopant activation in donor-doped samples.
Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE; USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
2560943
Alternate ID(s):
OSTI ID: 2553105
OSTI ID: 2571721
Report Number(s):
LLNL--JRNL-872326
Journal Information:
Journal of Physics. Condensed Matter, Journal Name: Journal of Physics. Condensed Matter Journal Issue: 20 Vol. 37; ISSN 0953-8984; ISSN 1361-648X
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English

References (32)

Enhanced Laser Damage Threshold in Optically Addressable Light Valves via Aluminum Nitride Photoconductors journal October 2024
Ultrawide-Bandgap Semiconductors: Research Opportunities and Challenges journal December 2017
Electrostatic interactions between charged defects in supercells journal December 2010
Sulfur doping of AlN and AlGaN for improved n-type conductivity: Sulfur doping of AlN and AlGaN for improved n-type conductivity journal July 2015
Hole Trapping at Acceptor Impurities and Alloying Elements in AlN journal July 2021
Dopants and defects in ultra-wide bandgap semiconductors journal June 2024
An aluminium nitride light-emitting diode with a wavelength of 210 nanometres journal May 2006
Generation–recombination noise of DX centers in AlN:Si journal October 2001
Hybrid functionals based on a screened Coulomb potential journal May 2003
Erratum: “Hybrid functionals based on a screened Coulomb potential” [J. Chem. Phys. 118, 8207 (2003)] journal June 2006
Group-II acceptors in wurtzite AlN: A screened hybrid density functional study journal May 2010
Shallow donor and DX states of Si in AlN journal February 2011
Bandgap in Al 1− x Sc x N journal March 2013
Origins of optical absorption and emission lines in AlN journal September 2014
On compensation in Si-doped AlN journal April 2018
Demonstration of near-ideal Schottky contacts to Si-doped AlN journal October 2023
Nonradiative quenching of EPR signals in germanium-doped AlGaN: Evidence for DX-center formation journal January 2025
Next generation electronics on the ultrawide-bandgap aluminum nitride platform journal March 2021
Self-Consistent Equations Including Exchange and Correlation Effects journal November 1965
Projector augmented-wave method journal December 1994
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set journal October 1996
Stability of deep donor and acceptor centers in GaN, AlN, and BN journal May 1997
From ultrasoft pseudopotentials to the projector augmented-wave method journal January 1999
Effects of carbon on the electrical and optical properties of InN, GaN, and AlN journal January 2014
Hybrid functional calculations of D X centers in AlN and GaN journal February 2014
Defects in AlN as candidates for solid-state qubits journal April 2016
Fully Ab Initio Finite-Size Corrections for Charged-Defect Supercell Calculations journal January 2009
Theory of the Atomic and Electronic Structure of DX Centers in GaAs and Al x Ga 1 − x As Alloys journal August 1988
Metastability of Oxygen Donors in AlGaN journal May 1998
Oxygen and silicon point defects in Al 0.65 Ga 0.35 N journal May 2019
First-principles calculations for point defects in solids journal March 2014
VESTA 3 for three-dimensional visualization of crystal, volumetric and morphology data journal October 2011

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