Improved thin films of pentacene via pulsed laser deposition at elevated substrate temperatures

A. J. Salih, S. P. Lau, J. M. Marshall, J. M. Maud, W. R. Bowen, N. Hilal, R. W. Lovitt, P. M. Williams

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Abstract

Thin films of pentacene were deposited by thermal evaporation and by pulsed laser deposition (PLD). Surface characterization using atomic force microscopy shows that PLD leads to a reduction in surface roughness, which can be reduced further using heated substrates. Observation of enhanced field-effect carrier mobilities in the PLD films, together with increased electrical conductivity and reduced activation energy for electrical conduction, is consistent with increased molecular ordering in the pentacene films and suggests a direct correlation between molecular ordering in the bulk and surface roughness.

Original languageEnglish
Pages (from-to)2231-2233
Number of pages3
JournalApplied Physics Letters
Volume69
Issue number15
DOIs
Publication statusPublished - 7 Oct 1996

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Salih, A. J., Lau, S. P., Marshall, J. M., Maud, J. M., Bowen, W. R., Hilal, N., Lovitt, R. W., & Williams, P. M. (1996). Improved thin films of pentacene via pulsed laser deposition at elevated substrate temperatures. Applied Physics Letters, 69(15), 2231-2233. https://doi.org/10.1063/1.117137