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Updated: Mar 20, 2026

Tuning Oxide Properties by Oxygen Vacancy Control During Growth and Annealing
Published on: June 9, 2023
Structural and electrical properties of oxygen complexes in Cz and FZ silicon crystals implanted with carbon ions
Boris Romanyuk1, Victor Melnik2, Valentin Popov2
1V. Lashkarev Institute of Semiconductor Physics NAS of Ukraine, 41 Prospect Nauki, 03028, Kyiv, Ukraine. romb@isp.kiev.ua.
Abstract:
We present a comparative study of thermal donor (TD) center formation mechanisms as a result of carbon ion implantation into float zone (FZ-Si) and Czochralski (Cz-Si) silicon crystals. The kinetics of the TD center formation and transformation of their structure during annealing have been investigated. Also, the TD center formation takes place after additional oxygen implantation into FZ/Cz-Si, and an important role of recoil oxygen atoms (from the screen oxide) has been demonstrated for the FZ-Si case. Their concentration in the Si surface layer depends on the implantation dose and the screen oxide thickness, reaching up to values 10(18) to 10(19) cm(-3), which is comparable with the oxygen concentration in Cz-Si. These oxygen atoms can lead to additional thermal donor centers generation, especially in the FZ-Si.
Pacs:
34.50.Dy; 61.10.-i; 68.35.Dv.
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