Optimization of supersonic nozzle flow for titanium dioxide thin-film coating by aerosol deposition

  • M. W. Lee
  • , J. J. Park
  • , D. Y. Kim
  • , S. S. Yoon*
  • , H. Y. Kim
  • , D. H. Kim
  • , S. C. James
  • , S. Chandra
  • , Thomas Coyle
  • , J. H. Ryu
  • , W. H. Yoon
  • , D. S. Park
  • *Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    83 Citations (Scopus)

    Abstract

    Aerosol deposition (AD) is an efficient technique for customized coating of various substrates. The small particles of AD yield a dense coating layer with small voids. AD is amenable to rapid coating (mass production), thus, it is economically attractive. Low-temperature AD coating is desirable because it minimizes the thermal degradation of the substrate. An optimized low-cost AD coating technique is of significant interest to solar-cell engineers seeking to reduce manufacturing costs. While most previous studies ignore the importance of nozzle geometry on coating performance, this paper examines non-optimized nozzles and commensurate shockwaves using computational fluid dynamics (CFD). The optimized nozzle geometry obtained from CFD can rapidly prototype nozzles. The CFD-designed nozzles with optimized geometry yielded significantly improved coating quality over non-optimized nozzles.

    Original languageEnglish
    Pages (from-to)771-780
    Number of pages10
    JournalJournal of Aerosol Science
    Volume42
    Issue number11
    DOIs
    Publication statusPublished - 2011 Nov

    Bibliographical note

    Funding Information:
    This work was supported by the New & Renewable Energy Program through a grant by the Korea Institute of Energy Technology Evaluation and Planning (KETEP , 2010–3010010011 ) and the Fundamental R&D Program for Core Technology of Materials funded by the Ministry of Knowledge Economy of Korea. This work was also supported by the Center for Inorganic Photovoltaic Materials ( NRF-2011-0007182 ), ( NRF-2010-D00013 ), and the Converging Research Center Program through the Ministry of Education, Science and Technology ( 2010K000969 ).

    Keywords

    • Aerosol deposition
    • Computational fluid dynamics
    • Nozzle optimization
    • Shockwave
    • Supersonic nozzle flow

    ASJC Scopus subject areas

    • Environmental Engineering
    • Pollution
    • Mechanical Engineering
    • Fluid Flow and Transfer Processes
    • Atmospheric Science

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