Fully Inkjet-Printed Thin-Film Transistor Array Manufactured on Paper Substrate for Cheap Electronic Applications

Kalyan Yoti Mitra, Maxim Polomoshnov, Carme Martínez-Domingo, Dana Mitra, Eloi Ramon, Reinhard R. Baumann

Research output: Contribution to journalArticleResearchpeer-review

25 Citations (Scopus)

Abstract

© 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim Over the past decade, inkjet technology has been well recognized for the manufacturing of products that include “printing beyond colors.” This micrometer-scale precise technology provides a straightforward approach toward judicious deposition of electronically functional material inks on various substrates over relatively large areas, for printed/flexible electronics. The technology promotes upscalability and has become a renowned process tool for fabricating electronic devices in the field of printed/flexible electronics. Here, the fabrication of printed thin-film transistors (TFT) on cheap coated paper substrate using inkjet technology is reported. For developing the TFT layer stack conductive nanoparticle inks, a polymeric dielectric ink and a p-type organic semiconductor ink are employed. The coating on the paper provides several advantages for fabrication process of TFTs; for example, control over ink spreading. This control of ink spreading can directly influence the fabrication of interdigitated source/drain (S/D) electrodes for TFTs, when a top gate bottom contact architecture is considered. This results in better manufacturing yields and promising electrical performance, which are also the focus of this research. The all inkjet-printed TFTs on paper exhibit electrical performance with maximum S/D current ranging to 170 nA, charge carrier mobility of 0.087 cm2 V−1 s−1, and current on/off ratio of 330.
Original languageEnglish
Article number1700275
JournalAdvanced Electronic Materials
Volume3
Issue number12
DOIs
Publication statusPublished - 1 Dec 2017

Keywords

  • cheap electronic applications
  • inkjet technology
  • nonporous paper
  • printed electronics
  • thin-film transistors

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