Pentacene-based thin-film transistors with a solution-process hafnium oxide insulator

Chia Yu Wei, Feri Adriyanto, Yu Ju Lin, Yu Chang Li, Tong Jyun Huang, Dei Wei Chou, Yeong Her Wang

Research output: Contribution to journalArticlepeer-review

42 Citations (Scopus)


Pentacene-based organic thin-film transistors with solution-process hafnium oxide (HfOx) as gate insulating layer have been demonstrated. The solution-process HfOx could not only exhibit a high-permittivity (K = 11) dielectric constant but also has good dielectric strength. Moreover, the root-mean-square surface roughness and surface energy (γs) on the surface of the HfOx layer were 1.304 nm and 34.24 mj/cm 2, respectively. The smooth, as well as hydrophobic, surface of HfOx could facilitate the direct deposition of the pentacene film without an additional polymer treatment layer, leading to a high field-effect mobility of 3.8cm2/(V. s).

Original languageEnglish
Article number5229277
Pages (from-to)1039-1041
Number of pages3
JournalIEEE Electron Device Letters
Issue number10
Publication statusPublished - 2009 Oct

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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