Schottky junctions based on vacuum evaporated films of thiophene oligomers

D. Fichou, G. Horowitz, Yoshinori Nishikitani, J. Roncali, F. Garnier

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

α-sexithienyl (α-6T) was synthesized and deposited as thin films onto platinized glass slides by the technique of vacuum evaporation. Metal-semiconductor (MS) junctions were then realized by evaporating small dots of Ag and Au. On the asformed film, Au gives an ohmic contact, and Ag a rectifying barrier. It is then concluded that α-6T behaves as a p-type semiconductor. After annealing at 150°C, rectifying barriers are obtained on both Au and Ag contacts, and α-6T turns to an n-type semiconductor. Changes in the respective UV-visible absorption may help in understanding the change from p- to n-type doping. A rough estimate of the band position of α-6T was obtained from the current-voltage and capacitance-voltage measurements on the MS diodes.

Original languageEnglish
Pages (from-to)729-734
Number of pages6
JournalSynthetic Metals
Volume28
Issue number1-2
DOIs
Publication statusPublished - 1989 Jan 30
Externally publishedYes

Fingerprint

Thiophenes
Thiophene
thiophenes
oligomers
Oligomers
Metals
Semiconductor junctions
Vacuum
Semiconductor materials
Semiconductor diodes
semiconductor junctions
Vacuum evaporation
vacuum
p-type semiconductors
semiconductor diodes
n-type semiconductors
Capacitance measurement
Ohmic contacts
Voltage measurement
chutes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Polymers and Plastics

Cite this

Schottky junctions based on vacuum evaporated films of thiophene oligomers. / Fichou, D.; Horowitz, G.; Nishikitani, Yoshinori; Roncali, J.; Garnier, F.

In: Synthetic Metals, Vol. 28, No. 1-2, 30.01.1989, p. 729-734.

Research output: Contribution to journalArticle

Fichou, D. ; Horowitz, G. ; Nishikitani, Yoshinori ; Roncali, J. ; Garnier, F. / Schottky junctions based on vacuum evaporated films of thiophene oligomers. In: Synthetic Metals. 1989 ; Vol. 28, No. 1-2. pp. 729-734.
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