Low-voltage-driven pentacene thin-film transistor with an organic-inorganic nanohybrid dielectric

Kwang H. Lee, Jeong M. Choi, Seongil Im, Byoung H. Lee, Kyo K. Im, Myung M. Sung, Seungjun Lee

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Abstract

The authors report on the fabrication of pentacene-based thin-film transistors (TFTs) with a 13 nm -thick nanohybrid superlattice-type dielectric composed of ten units of molecular aluminum oxide (Al Ox) -self-assembled multilayer (SAMu) lattice on indium-tin-oxide (ITO) glass or on n+ -Si substrate. The Al Ox -SAMu nanohybrid layers showed high dielectric capacitances of 187 and 233 nF cm2 on ITO glass and on n+ -Si substrate, respectively, along with a high dielectric strength of 4 MVcm in both cases. Our pentacene-TFTs showed a maximum field effect mobility of 0.92 cm2 V s, operating at -3 V with an on/off current ratio of ∼ 103. Load-resistance inverter using our pentacene-TFT demonstrated a decent voltage gain of ∼5.

Original languageEnglish
Article number123502
JournalApplied Physics Letters
Volume91
Issue number12
DOIs
Publication statusPublished - 2007 Sep 28

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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