Spatial control of the threshold voltage of low-voltage organic transistors by microcontact printing of alkyl- and fluoroalkyl-phosphonic acids

Ikue Hirata, Ute Zschieschang, Frederik Ante, Tomoyuki Yokota, Kazunori Kuribara, Tatsuya Yamamoto, Kazuo Takimiya, Masaaki Ikeda, Hirokazu Kuwabara, Hagen Klauk, Tsuyoshi Sekitani, Takao Someya

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Low-voltage-driven organic thin-film transistors (organic TFTs) with spatially controlled threshold voltages (−1.2 and −0.36 V) were fabricated for the first time. Using the microcontact printing method, tetradecylphosphonic acid (HC14-PA) and pentadecylfluoro-octadecylphosphonic acid (FC18-PA) were transferred to form ultrathin layers in different regions on a substrate. Together with plasma-grown aluminum oxide (AlOx) layer, the stamped layers were shown to have equal insulating ability as the dipped method monolayer. The feasibility of the area-selective stamping method was displayed using locally controlled inverter circuits. The shift of turn-on voltage for those transistors was consistent with the threshold voltage shift of the transistors.

Original languageEnglish
Pages (from-to)33-36
Number of pages4
JournalMRS Communications
Volume1
Issue number1
DOIs
Publication statusPublished - 2011 Nov 1
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)

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