Abstract
The formation of small oxygen clusters upon heat treatment at 280–375°C was studied in crystalline silicon doped with hydrogen by high-temperature in-diffusion. The presence of hydrogen in concentrations of 1015–1016 cm−3 significantly enhances (by up to a factor of 106 at T≤300°C) the oxygen diffusivity in Si crystals. Possible mechanisms of interaction between O and H impurity atoms and the origin of hydrogen-enhanced oxygen diffusion in silicon are discussed.
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