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

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

Research output: Journal article publicationJournal articleAcademic researchpeer-review

36 Citations (Scopus)


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
Issue number15
Publication statusPublished - 7 Oct 1996
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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