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Simulation of the kinetics of oxygen complexes in crystalline silicon

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© 2002 American Physical Society (APS). This is the accepted version of the following article: Joo Lee, Young & von Boehm, J. & Nieminen, Risto M. 2002. Simulation of the kinetics of oxygen complexes in crystalline silicon. Physical Review B. Volume 66, Issue 16. 165221/1-11. ISSN 1550-235X (electronic). DOI: 10.1103/physrevb.66.165221, which has been published in final form at http://journals.aps.org/prb/abstract/10.1103/PhysRevB.66.165221.
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School of Science | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

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en

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165221/1-11

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Physical Review B, Volume 66, Issue 16

Abstract

The formation kinetics of thermal double donors (TDD’s) is studied by a general kinetic model with parameters based on accurate ab initio total-energy calculations. The kinetic model includes all relevant association, dissociation, and restructuring processes. The simulated kinetics agrees qualitatively and in most cases quantitatively with the experimentally found consecutive kinetics of TDD’s. It also supports our earlier assignments of the ring-type oxygen chains to TDD’s [Pesola et al., Phys. Rev. Lett. 84, 5343 (2000)]. We demonstrate with the kinetic model that the most common assumption that only the O2 dimer acts as a fast diffusing species would lead to an unrealistic steady increase of the concentration of O3. The neglect of restructuring processes leads to an anomalous increase of oxygen dimers and negligible concentrations of TDD’s. The capture of interstitial oxygens by diffusing oxygen chains and the escaping of interstitial oxygens from the chains fully dominate the formation kinetics.

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Joo Lee, Young & von Boehm, J. & Nieminen, Risto M. 2002. Simulation of the kinetics of oxygen complexes in crystalline silicon. Physical Review B. Volume 66, Issue 16. 165221/1-11. ISSN 1550-235X (electronic). DOI: 10.1103/physrevb.66.165221.

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