Investigation of oxygen distribution in electromagnetic CZ-Si melts with a transverse magnetic field using 3D global modeling

Lijun Liu, Satoshi Nakano, Koichi Kakimoto

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

Three-dimensional (3D) analysis was carried out for oxygen transport in silicon melts of a Czochralski (CZ) growth process with electromagnetic fields. The system with electromagnetic fields was established with a transverse magnetic field and an injected electric current applied on the melt surface. The melt flow and thermal field in the growth furnace were numerically obtained with a recently developed 3D global model. The influence of electrode position and electric current direction on the oxygen distribution and concentration in the melt as well as on the growth interface was investigated. The heat transfer and mass transfer in the melt were also analyzed to clarify the mechanisms. The results showed that control of the oxygen distribution and concentration on the crystal growth interface is possible by appropriate positioning of the electrode on the melt surface and appropriate selection of the electric current direction. The results also showed that an electromagnetic CZ process (EMCZ) is superior to a transverse magnetic field-applied CZ process (TMCZ) and a conventional CZ process for controlling oxygen distribution in a silicon crystal grown from melt.

Original languageEnglish
Pages (from-to)48-58
Number of pages11
JournalJournal of Crystal Growth
Volume299
Issue number1
DOIs
Publication statusPublished - Feb 1 2007

Fingerprint

Electric currents
Magnetic fields
electromagnetism
Oxygen
oxygen
Silicon
magnetic fields
Electromagnetic fields
electric current
Electrodes
Crystal growth from melt
Crystallization
Crystal growth
electromagnetic fields
Furnaces
Mass transfer
Heat transfer
electrodes
dimensional analysis
Crystals

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

Cite this

Investigation of oxygen distribution in electromagnetic CZ-Si melts with a transverse magnetic field using 3D global modeling. / Liu, Lijun; Nakano, Satoshi; Kakimoto, Koichi.

In: Journal of Crystal Growth, Vol. 299, No. 1, 01.02.2007, p. 48-58.

Research output: Contribution to journalArticle

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AB - Three-dimensional (3D) analysis was carried out for oxygen transport in silicon melts of a Czochralski (CZ) growth process with electromagnetic fields. The system with electromagnetic fields was established with a transverse magnetic field and an injected electric current applied on the melt surface. The melt flow and thermal field in the growth furnace were numerically obtained with a recently developed 3D global model. The influence of electrode position and electric current direction on the oxygen distribution and concentration in the melt as well as on the growth interface was investigated. The heat transfer and mass transfer in the melt were also analyzed to clarify the mechanisms. The results showed that control of the oxygen distribution and concentration on the crystal growth interface is possible by appropriate positioning of the electrode on the melt surface and appropriate selection of the electric current direction. The results also showed that an electromagnetic CZ process (EMCZ) is superior to a transverse magnetic field-applied CZ process (TMCZ) and a conventional CZ process for controlling oxygen distribution in a silicon crystal grown from melt.

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