Thin-film metallization of CuInGaSe2 nanoparticles by supersonic kinetic spraying

Jung Jae Park, Jong Gun Lee, Scott C. James, Salem S. Al-Deyab, Sejin Ahn, Suk Goo Yoon

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

High-speed spraying quickly deposits dry, solid particles at atmospheric pressure, without the use of binders, across large coating areas. We experimentally deposited Al2O3 and copper-indium-gallium-selenium (CIGS) nanoparticles on Al2O3 and molybdenum substrates and numerically replicated the results to elucidate the details of the deposition mechanisms. Thin films formed from layers of sprayed-particle impacts. Both single- and multiple-particle impacts are simulated and increases in pressure, temperature and von Mises stress are reported. Both experimentally and numerically, micron-sized particles are pulverized into flattened layers of nano-sized particle fragments. Characterizing the impact physics (particle collapse speed, energy exchange, and substrate damage) helps identify the optimum operating envelope for particle speeds less than 200 m/s that maximizes thin-film growth rates and minimizes substrate damage.

Original languageEnglish
Pages (from-to)66-76
Number of pages11
JournalComputational Materials Science
Volume101
DOIs
Publication statusPublished - 2015 Apr 15

Keywords

  • CIGS nanoparticle
  • Impact bonding
  • Supersonic spraying

ASJC Scopus subject areas

  • Materials Science(all)
  • Chemistry(all)
  • Computer Science(all)
  • Physics and Astronomy(all)
  • Computational Mathematics
  • Mechanics of Materials

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