Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Charge transport mechanism in La:HfO2. / Gritsenko, V. A.; Gismatulin, A. A.
в: Applied Physics Letters, Том 117, № 14, 142901, 05.10.2020.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Charge transport mechanism in La:HfO2
AU - Gritsenko, V. A.
AU - Gismatulin, A. A.
PY - 2020/10/5
Y1 - 2020/10/5
N2 - Currently, it is generally accepted that the charge transport in dielectrics is limited by the Coulomb trap ionization in a strong electric field (Frenkel effect). In the present work, the charge transport mechanism in La:HfO2 was experimentally studied, and four theoretical conductivity models-the Frenkel effect of Coulomb trap ionization, Hill-Adachi model of overlapping Coulomb potentials, Makram-Ebeid and Lannoo model of multiphonon isolated trap ionization, and Nasyrov-Gritsenko phonon-assisted tunneling between traps-were quantitatively analyzed. It was shown that the charge transport mechanism in La: HfO2 is qualitatively described by the Frenkel effect, but the Frenkel effect predicts an abnormally low trap concentration value and a large high-frequency dielectric constant value, which is not consistent with the experiment. The charge transport in La:HfO2 is quantitatively described by the model of phonon-assisted tunneling between neighboring traps.
AB - Currently, it is generally accepted that the charge transport in dielectrics is limited by the Coulomb trap ionization in a strong electric field (Frenkel effect). In the present work, the charge transport mechanism in La:HfO2 was experimentally studied, and four theoretical conductivity models-the Frenkel effect of Coulomb trap ionization, Hill-Adachi model of overlapping Coulomb potentials, Makram-Ebeid and Lannoo model of multiphonon isolated trap ionization, and Nasyrov-Gritsenko phonon-assisted tunneling between traps-were quantitatively analyzed. It was shown that the charge transport mechanism in La: HfO2 is qualitatively described by the Frenkel effect, but the Frenkel effect predicts an abnormally low trap concentration value and a large high-frequency dielectric constant value, which is not consistent with the experiment. The charge transport in La:HfO2 is quantitatively described by the model of phonon-assisted tunneling between neighboring traps.
KW - ATOMIC LAYER DEPOSITION
KW - CONDUCTION
KW - NITRIDE
KW - FILMS
UR - http://www.scopus.com/inward/record.url?scp=85092266331&partnerID=8YFLogxK
U2 - 10.1063/5.0021779
DO - 10.1063/5.0021779
M3 - Article
AN - SCOPUS:85092266331
VL - 117
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 14
M1 - 142901
ER -
ID: 25687205