@article{3659a59379154849a53d527c370001fe,
title = "Defects responsible for charge carrier removal and correlation with deep level introduction in irradiated β-Ga2O3 ",
abstract = "Carrier removal rates and electron and hole trap densities in β-Ga2O3 films grown by hydride vapor phase epitaxy (HVPE) and irradiated with 18 MeV α-particles and 20 MeV protons were measured and compared to the results of modeling. The electron removal rates for proton and α-radiation were found to be close to the theoretical production rates of vacancies, whereas the concentrations of major electron and hole traps were much lower, suggesting that the main process responsible for carrier removal is the formation of neutral complexes between vacancies and shallow donors. There is a concurrent decrease in the diffusion length of nonequilibrium charge carriers after irradiation, which correlates with the increase in density of the main electron traps E2∗ at Ec - (0.75-0.78) eV, E3 at Ec - (0.95-1.05) eV, and E4 at Ec - 1.2 eV. The introduction rates of these traps are similar for the 18 MeV α-particles and 20 MeV protons and are much lower than the carrier removal rates.",
author = "Polyakov, {A. Y.} and Smirnov, {N. B.} and Shchemerov, {I. V.} and Yakimov, {E. B.} and Pearton, {S. J.} and Chaker Fares and Jiancheng Yang and Fan Ren and Jihyun Kim and Lagov, {P. B.} and Stolbunov, {V. S.} and A. Kochkova",
note = "Funding Information: The work at NUST MISiS was supported in part by the Ministry of Education and Science of the Russian Federation in the framework of Increase Competitiveness Program of NUST (MISiS, R2-2014-055). The work at UF was supported by Department of Defense, Defense Threat Reduction Agency, HDTRA1-17-1-011, monitored by Jacob Calkins. The research at Korea University was supported by the New and Renewable Energy Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant from the Ministry of Trade, Industry and Energy, Republic of Korea (Nos. 20173010012970 and 20172010104830). Proton irradiation was performed on injector-linear accelerator I-2 “Kamiks” at the Center of Collective Use at the Institute of Theoretical and Experimental Physics in Moscow. Publisher Copyright: {\textcopyright} 2018 Author(s).",
year = "2018",
month = aug,
day = "27",
doi = "10.1063/1.5049130",
language = "English",
volume = "113",
journal = "Applied Physics Letters",
issn = "0003-6951",
publisher = "American Institute of Physics Publising LLC",
number = "9",
}