Depth profiles of manganese implants in InP after annealing

Abstract
This paper reports on depth profiles of Mn implants, after annealing, obtained by secondary ion mass spectrometry. Two types of samples implanted with manganese were studied: unintentionally doped n-type (5–10×1015 e cm−3), and n-type S-doped (n=5×1018 e cm−3) substrates. In unintentionally doped substrates it is found that Mn exhibits a well-defined two-species diffusion front as other acceptors: Be, Zn, or Cd. On the contrary in S-doped substrates it does not move. The study of the correlations between the movement of the residual impurities and the implanted Mn atoms, or Zn in a comparative sample, has led us to propose a model based on an interstitial-substitutional reaction involving the impurity sites and taking place in the bulk of the semiconductor.

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