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Surface Morphology of Pentacene Thin Film

  • Varsha Rani
  • Akanksha Sharma
  • Harish Chandr Chauhan
  • Subhasis Ghosh
Conference paper
Part of the Environmental Science and Engineering book series (ESE)

Abstract

Growth mechanism of Pentacene thin film has been investigated with a combination of atomic force microscopy measurements and numerical modeling. Initially Pentacene grows as a monolayer fractal islands caused by DLA mechanism and evolves into compact islands as the surface coverage increases. As the branches of the first layer are widened, the monomer density on the top of the first layer increases and eventually becomes large enough to form critical islands for the growth of second layer. This phenomenon is mainly attributed to a growth instability caused by the Schwoebel barrier that prevents the newly landing molecules from hopping down the edge. Simulations based on a simple model of film growth are found to agree with experimental observations.

Keywords

Pentacene DLA Schwoebel barrier 

References

  1. 1.
    S.F. Nelson, Y.Y. Lin, D. J. Gundlach and T. N. Jackson, Appl. Phys. Lett. 72, 1854 (1998).CrossRefGoogle Scholar
  2. 2.
    C. Wang, H. Dong, W. Hu, Y. Liu, and D. Zhu, Chem. Rev. 112, 2208 (2012).Google Scholar
  3. 3.
    Witten,T.& Sander,L., Phy.Rev.Lett. 47, 1400 (1981)Google Scholar
  4. 4.
    R.L. Schwoebel, and E. J. Shipsey, J. Appl. Phys. 37, 3682 (1996).Google Scholar

Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • Varsha Rani
    • 1
  • Akanksha Sharma
    • 1
  • Harish Chandr Chauhan
    • 1
  • Subhasis Ghosh
    • 1
  1. 1.School of Physical SciencesJawaharlal Nehru UniversityNew DelhiIndia

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