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http://dx.doi.org/10.4313/JKEM.2014.27.4.199

The Effect of Neutron Radiation on the Electrical Characteristics of SiC Schottky Diodes  

Kim, Sung-Su (Department of Electronic Materials Engineering, Kwangwoon University)
Kang, Min-Seok (Department of Electronic Materials Engineering, Kwangwoon University)
Cho, Man-Soon (Korea Atomic Energy Research Institute)
Koo, Sang-Mo (Department of Electronic Materials Engineering, Kwangwoon University)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.27, no.4, 2014 , pp. 199-202 More about this Journal
Abstract
The effect of neutron irradiation on the properties of SiC Schottky Diode has been investigated. SiC Schottky diodes were irradiated under neutron fluences and compared to the reference samples to study the radiation-induced changes in device properties. The condition of neutron irradiation was $3.1{\times}10^{10}$ $n/cm^2$. The current density after irradiation decreased from 12.7 to 0.75 $A/cm^2$. Also, a slight positive shift (${\Delta}V_{th}$= 0.15 V) in threshold voltage from 0.53 to 0.68 V and a positive change (${\Delta}{\Phi}_B$= 0.16 eV) of barrier height from 0.89 to 1.05 eV have been observed by the neutron irradiation, which is attributed to charge damage in the interface between the metal and the SiC layer.
Keywords
Neutron; 4H-SiC; Schottky diode; Barrier height; Threshold-voltage; Current density;
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