Laser printing of a semiconducting oligomer as active layer in organic thin film transistors: Impact of a protecting triazene layer

Ludovic Rapp*, Abdou Karim Diallo, Sébastien Nénon, Anne Patricia Alloncle, Christine Videlot-Ackermann, Frédéric Fages, Matthias Nagel, Thomas Lippert, Philippe Delaporte

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)

Abstract

Organic thin-film transistor (OTFT) devices were achieved using the laser-induced forward transfer technique. As p-type organic semiconductor, distyryl-quaterthiophene (DS4T) was vacuum-deposited on a donor substrate and transferred with picosecond laser pulses on Si/SiO 2-based receiver substrates to form an organic active layer. To avoid laser damage of the organic thin film, a UV-sensitive aryltriazene polymer as a sacrificial layer was used. The polymer layer, deposited on the donor substrate prior to the organic layer deposition, has high absorption at the laser wavelength and does not contaminate the printed pixels. The DS4T pixels printed on receiver substrates have well defined morphological properties as shown by atomic force microscopy and scanning electronic microscopy. OTFT devices were characterized in top- and bottom-contact configurations using thermally evaporated gold lines as source-drain electrodes. DS4T pixels printed as active layer for charge transport not only issue mobility values comparable to DS4T layers prepared by vacuum evaporation but also a relative electrical stability over time.

Original languageEnglish
Pages (from-to)3043-3047
Number of pages5
JournalThin Solid Films
Volume520
Issue number7
DOIs
Publication statusPublished - 31 Jan 2012
Externally publishedYes

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