Capan, I.; Brodar, T.; Makino, T.; Radulovic, V.; Snoj, L. M-Center in Neutron-Irradiated 4H-SiC. Crystals2021, 11, 1404.
Capan, I.; Brodar, T.; Makino, T.; Radulovic, V.; Snoj, L. M-Center in Neutron-Irradiated 4H-SiC. Crystals 2021, 11, 1404.
We report on metastable defects introduced in n-type 4H-SiC material by epithermal and fast neutron irradiation. The epithermal and fast neutron irradiation defects in 4H-SiC are much less explored compared to electron or proton irradiation induced defects. In addition to silicon vacancy (Vsi) and carbon antisite-carbon vacancy (CAV) complex, the neutron irradiation has introduced four deep level defects, all arising from the metastable defect, the M-center. The metastable deep level defects were investigated by deep level transient spectroscopy (DLTS), high-resolution Laplace DLTS (L-DLTS) and isothermal DLTS. The existence of the fourth deep level M4, recently observed in ion implanted 4H-SiC, has been additionally confirmed in neutron irradiated samples. The isothermal DLTS technique has been proven as a useful tool for studying the metastable defects.
defects; 4H-SiC; DLTS; neutrons
PHYSICAL SCIENCES, Condensed Matter Physics
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