Fabrication and characterization of the pentacene thin film transistor with a Gd2O3 gate insulator

S. J. Kang, K. B. Chung, D. S. Park, H. J. Kim, Y. K. Choi, M. H. Jang, M. Noh, C. N. Whang

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

Pentacene thin film transistors (TFTs) on a high-κ Gd 2O3 gate insulator layer were fabricated and characterized. The Gd2O3 layer was grown by ion beam assisted deposition (IBAD) on a heavily-doped silicon substrate in ultra high vacuum, where the measured dielectric constant of the oxide layer was about 7.4. The maximum field effect mobility and the on/off ratio of the TFTs were 0.1 cm2/Vs and about 103, respectively. The threshold voltage of the device was dramatically decreased (15.3 → -3.5 V) as the high-κ Gd2O3 layer replaced the SiO2 layer.

Original languageEnglish
Pages (from-to)351-354
Number of pages4
JournalSynthetic Metals
Volume146
Issue number3
DOIs
StatePublished - 3 Nov 2004

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