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Potential for neutron and proton transmutation doping of GaN and Ga2O3

Journal Article · · Materials Advances
DOI:https://doi.org/10.1039/D0MA00017E· OSTI ID:1605727
 [1];  [2];  [3];  [1];  [4];  [4]
  1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Dept. of Nuclear Science and Engineering
  2. Pennsylvania State Univ., University Park, PA (United States). Dept. of Material Engineering Science and Mechanics
  3. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  4. Air Force Research Lab. (AFRL), Kirtland AFB (United States)
+ Show Author Affiliations
As the potential applications of GaN and Ga2O3 are limited by the inadequacy of conventional doping techniques, specifically when uniform selective area p-type doping is required, the potential for transmutation doping of these materials is analyzed. All transmuted element concentrations are reported as a function of time for several common proton and neutron radiation sources, showing that previously published results considered a small subset of the dopants produced. A 40 MeV proton accelerator is identified as the most effective transmutation doping source considered, with a 2.25 × 1017 protons per cm2 fluence yielding net concentrations of uncompensated p-type dopants of 7.7 × 1015 and 8.1 × 1015 cm-3 for GaN and Ga2O3, respectively. Furthermore, it is shown that high energy proton accelerator spectra are capable of producing dopants required for magnetic and neutron detection applications, although not of the concentrations required for current applications using available irradiation methods.
Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC04-94AL85000
OSTI ID:
1605727
Report Number(s):
SAND--2020-3319J; 684866
Journal Information:
Materials Advances, Journal Name: Materials Advances Journal Issue: 1 Vol. 1; ISSN MAADC9; ISSN 2633-5409
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English

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