Ni. Kuznetsov et As. Zubrilov, DEEP CENTERS AND ELECTROLUMINESCENCE IN 4H-SIC DIODES WITH A P-TYPE BASE REGION, Materials science & engineering. B, Solid-state materials for advanced technology, 29(1-3), 1995, pp. 181-184
We have performed electrical and optical measurements to characterize
the processes of radiative recombination of carriers for 4H-SiC p-n(+)
junctions. We have detected three levels in the band gap, using capac
itance and current deep-level transient spectroscopy, which are respon
sible for the bands observed in the electroluminescence spectra. We as
sume that the HK1 center with an activation energy of E(V) + 0.229 eV
and a hole capture cross-section of 8 x 10(-13) (300/T)(3) is related
to the Al acceptor level.