Fluid flow and transport processes in a large area atmospheric pressure stagnation flow CVD reactor for deposition of thin films

G. Luo, S. P. Vanka, N. Glumac

    Research output: Contribution to journalArticle

    28 Scopus citations

    Abstract

    This paper investigates a new CVD reactor geometry to deposit uniform films on large area substrates at atmospheric pressure. Calculations have been performed for a wide range of parameters to investigate the effects of inlet flow rates, substrate rotation, and height of the reactor chamber. It is seen that for some combinations of the parameters the flow above the wafer is unsteady. Effect of rounded corners on damping instabilities of the shear layers is explored. By employing the rounded corners, we have been able to reduce the RMS non-uniformity to about 1% at atmospheric pressure on a 30 cm wafer. The impinging jet geometry can be used for the deposition of thin solid films without the penalty of a vacuum system and associated equipment costs.

    Original languageEnglish (US)
    Pages (from-to)4979-4994
    Number of pages16
    JournalInternational Journal of Heat and Mass Transfer
    Volume47
    Issue number23
    DOIs
    StatePublished - Nov 1 2004

    All Science Journal Classification (ASJC) codes

    • Condensed Matter Physics
    • Mechanical Engineering
    • Fluid Flow and Transfer Processes

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