Modified bimodal growth mechanism of pentacene thin films at elevated substrate temperatures

Dong Guo, Susumu Ikeda, Koichiro Saiki

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

The growth of pentacene thin films at elevated temperatures was studied. We observed decreased grain size and crystallinity with increasing substrate temperature in 30nm films, despite the increased grain size of the submonolayer films. These were attributed to a two-dimensional to three-dimensional growth transition and a pronounced desorption of the first monolayer molecules. The observed coarsening-like behavior and the dendritic to compact grain geometry transition with temperature were explained by classic growth theories. A modified bimodal growth mechanism at elevated temperatures was proposed by analyzing both the out-of-plane and the in-plane grazing incidence x-ray diffraction patterns of the same films.

Original languageEnglish
Article number262001
JournalJournal of Physics Condensed Matter
Volume22
Issue number26
DOIs
Publication statusPublished - 2010 Jun 9
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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