Improved electrical performance of organic thin-film transistors with modified high-K dielectrics

Fu Chiao Wu, Bo Liang Yeh, Tzu Hsiu Chou, Jen Sue Chen, Min Ruei Tsai, Horng Long Cheng, Wei Yang Chou

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We used a high dielectric constant material, hafnium dioxide (HfO2), as the dielectric layer and N,N'-ditridecyl-3,4,9,10-perylene tetracarboxylic diimide (PTCDI-C13) as the active layer to fabricate low voltage-driven organic thin-film transistor (OTFT) devices. After modifying the surface of HfO2 by polyimide (PI), the electrical characteristics and stability of PTCDI-C13-based OTFTs were considerably improved. We observed that the insulating property of HfO2/PI was superior to HfO2. The microstructures of PTCDI-C13 grown on HfO2/PI were better than those grown on HfO2, resulting from smaller interfacial tension of PTCDI-C13 with PI than with HfO2. The interfacial trap density of PTCDI-C13 with HfO2/PI is less than PTCDI-C13 with native HfO2. Consequently, the devices with HfO2/PI showed enhanced electrical performance compared than those with HfO2.

Original languageEnglish
Title of host publicationAM-FPD 2017 - 24th International Workshop on Active-Matrix Flatpanel Displays and Devices
Subtitle of host publicationTFT Technologies and FPD Materials, Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages183-186
Number of pages4
ISBN (Electronic)9784990875336
Publication statusPublished - 2017 Aug 8
Event24th International Workshop on Active-Matrix Flatpanel Displays and Devices, AM-FPD 2017 - Kyoto, Japan
Duration: 2017 Jul 42017 Jul 7

Publication series

NameAM-FPD 2017 - 24th International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials, Proceedings

Other

Other24th International Workshop on Active-Matrix Flatpanel Displays and Devices, AM-FPD 2017
Country/TerritoryJapan
CityKyoto
Period17-07-0417-07-07

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Computational Theory and Mathematics

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