Correlation of crystalline and structural properties of C60 thin films grown at various temperature with charge carrier mobility

Th B. Singh, N. S. Sariciftci, H. Yang, L. Yang, B. Plochberger, H. Sitter

Publikation: Beitrag in FachzeitschriftArtikelBegutachtung

75 Zitate (Scopus)

Abstract

Transistors fabricated from C60 films grown by hot wall epitaxy at higher substrate temperature, showed an order of magnitude increased charge carrier mobility up to 6 cm2 V s. In this letter, the authors present an extensive study of morphology and crystallinity of the fullerene films using atomic force microscopy and grazing-incidence x-ray diffraction. A clear correlation of crystalline quality of the C60 film and charge carrier mobility was found. A higher substrate temperature leads to a single crystal-like faceted fullerene crystals. The high crystalline quality solely brings a drastic improvement in the charge carrier mobility. A gate voltage independent mobility is also observed in these devices which can be attributed to the highly conjugated nature of the C60 thin film.

OriginalspracheEnglisch
Aufsatznummer213512
FachzeitschriftApplied Physics Letters
Jahrgang90
Ausgabenummer21
DOIs
PublikationsstatusVeröffentlicht - 2007

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