Influence of film growth conditions on carrier mobility of hot wall epitaxially grown fullerene based transistors


Ramil A., Singh B., Haber N., Gunes S. , Andreev A., Matt G., ...More

JOURNAL OF CRYSTAL GROWTH, vol.288, no.1, pp.123-127, 2006 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 288 Issue: 1
  • Publication Date: 2006
  • Doi Number: 10.1016/j.jcrysgro.2005.12.061
  • Title of Journal : JOURNAL OF CRYSTAL GROWTH
  • Page Numbers: pp.123-127

Abstract

Hot wall epitaxially grown C-60 based organic field-effect transistors (OFETs) show relatively high electron mobilities of 0.4-1 cm(2)/Vs. We report results of thin film grown with various growth conditions such as preheating and initial substrate temperatures resulting in strikingly different fullerene film nanomorphology. The mobility is enhanced up to 3 cm(2)/Vs for films grown at a substrate temperatures of 130 degrees C. This improvement in the mobility is explained in terms of a transition from a disordered interface consisting of small-elongated grains to a well-ordered C-60 film with bigger and rounder grains. (c) 2005 Elsevier B.V. All rights reserved.