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arXiv · 1612.06798

Formation of a p-n junction on the GaAs-surface by an Ar+ ion beam

V. M. Mikoushkin·V. V. Bryzgalov·S. Yu. Nikonov·A. P. Solonitsyna·D. E. Marchenko
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Abstract

The core-level and valence band electronic structure of the well-defined near-surface layer of n-GaAs (100) has been studied by synchrotron-based high-resolution photoelectron spectroscopy before and after modification of the layer by an Ar+ ion beam in the 1.5 - 2.5 keV energy range. Conversion of the conductivity type from n into p has been revealed in the irradiated layer several nm thick. The effect manifests itself in shifts of the core-levels and valence band edge by the value comparable to the bandgap width. Transformation on the conductivity type has been assumed to be caused by Ga-antisite point defects generated by ion bombardment. The possibility of local formation of a p-n nanojunction within the ion-beam spot has been shown.

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V. M. Mikoushkin, V. V. Bryzgalov, S. Yu. Nikonov, A. P. Solonitsyna, D. E. Marchenko. 2016-12-20. Formation of a p-n junction on the GaAs-surface by an Ar+ ion beam. https://arxiv.org/abs/1612.06798

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