Hole capture by D-center defects in 6H-silicon carbide
- 1 January 1995
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 77 (1) , 318-322
- https://doi.org/10.1063/1.359395
Abstract
Room‐temperature yellow luminescence is a distinctive signature of boron‐related deep‐level defects in 6H‐SiC. This yellow luminescence is associated with the boron‐related D center, rather than the more shallow boron acceptor. However, the reported activation energy for photoluminescence (0.7–0.73 eV) is in disagreement with the D center’s reported thermal activation energy (0.58–0.63 eV) as determined by deep‐level transient spectroscopy (DLTS). We show that this discrepancy can be eliminated by correcting the DLTS results for the temperature dependence of hole capture at the D center. By use of independent capture and emission measurements, and a two‐stage deep‐level capture model, the D center’s ground state is resolved to be Ev+0.74 eV±0.02 eV, in good agreement with photoluminescence data.This publication has 16 references indexed in Scilit:
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