Vibration atomic layer deposition for conformal nanoparticle coating

Suk Won Park, Jun Woo Kim, Hyung Jong Choi, Joon Hyung Shim

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

A vibration atomic layer deposition reactor was developed for fabricating a conformal thin-film coating on nanosize particles. In this study, atomic layer deposition of 10-15-nm-thick Al2O3 films was conducted on a high-surface-area acetylene black powder with particle diameters of 200-250 nm. Intense vibration during the deposition resulted in the effective separation of particles, overcoming the interparticle agglomeration force and enabling effective diffusion of the precursor into the powder chunk; this phenomenon led to the formation of a conformal film coating on the nanopowder particles. It was also confirmed that the atomic layer deposition Al2O3 films initially grew on the high-surface-area acetylene black powder particles as discrete islands, presumably because chemisorption of the precursor and water occurred only on a few sites on the high-surface-area acetylene black powder surface. Relatively sluggish growth of the films during the initial atomic layer deposition cycles was identified from composition analysis.

Original languageEnglish
Article number01A115
JournalJournal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
Volume32
Issue number1
DOIs
Publication statusPublished - 2014 Jan

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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