Skip to main content

Research Repository

Advanced Search

?-rays irradiation e?ects on dielectric properties of Ti/Au/GaAsN Schottky diodes with 1.2%N

Teffahi, A.; Hamri, D.; Djeghlouf, A.; Abboun Abid, M.; Saidane, A.; Al Saqri, N.; Felix, J.F.; henini, m


A. Teffahi

D. Hamri

A. Djeghlouf

M. Abboun Abid

A. Saidane

N. Al Saqri

J.F. Felix


Dielectric properties of As grown and irradiated Ti /Au/GaAsN Schottky diodes with 1.2%N are investigated using capacitance/conductance-voltage measurements in 90–290 K temperature range and 50–2000 kHz frequency range. Extracted parameters are interface state density, series resistance, dielectric constant, dielectric loss, tangent loss and ac conductivity. It is shown that exposure to γ-rays irradiation leads to reduction in effective trap density believed to result from radiation-induced traps annulations. An increase in series resistance is attributed to a net doping reduction. Dielectric constant (ε’) shows usual step-like transitions with corresponding relaxation peaks in dielectric loss. These peaks shift towards lower temperature as frequency decrease. Temperature dependant ac conductivity followed an Arrhenius relation with activation energy of 153 meV in the 200–290 K temperature range witch correspond to As vacancy. The results indicate that γ-rays irradiation improves the dielectric and electrical properties of the diode due to the defect annealing effect.


Teffahi, A., Hamri, D., Djeghlouf, A., Abboun Abid, M., Saidane, A., Al Saqri, N., …henini, M. (2018). γ-rays irradiation effects on dielectric properties of Ti/Au/GaAsN Schottky diodes with 1.2%N. Radiation Physics and Chemistry, 147,

Journal Article Type Article
Acceptance Date Jan 30, 2018
Online Publication Date Feb 1, 2018
Publication Date Jun 30, 2018
Deposit Date Feb 8, 2018
Publicly Available Date Feb 2, 2019
Journal Radiation Physics and Chemistry
Print ISSN 0969-806X
Electronic ISSN 0969-806X
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 147
Keywords ?-Rays irradiation, Dielectric relaxation, Dielectric constant, Dielectric loss, AC conductivity
Public URL
Publisher URL


You might also like

Downloadable Citations