Fe ion dose dependence of deep levels in Si p+-n junction

Abstract
A peak of deep level transient spectroscopy (DLTS) spectrum obtained from a silicon p+n junction implanted with iron was investigated and it was found that the energy level and the capture cross section of the trap varied with the iron dose. This is due to a change, with dose, of the concentration ratio of two kinds of traps, a process induced (E3:Ec−0.50 eV) and an iron‐associated center (E2:Ec−0.58 eV), which have nearly the same emission rate and give only a single peak to the DLTS spectrum. The concentration of the E2 trap depended on the iron dose, while that of the E3 trap did not.

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