Controlling the electrical properties of pentacene-based organic inverter by ultraviolet

Jeong M. Choi, Wonjun Choi, Seungjun Lee, Seongil Im

Research output: Contribution to journalLetter

6 Citations (Scopus)

Abstract

We report on the fabrication of pentacene-based organic inverter with two p-channel thin-film transistors (TFTs) on polymer/AlOx bilayer dielectric, which has been patterned by using high-energy ultraviolet (UV, 254 nm) illumination. After pentacene-channel growth on the dielectric, our inverter showed a high-voltage gain of ∼8 under -6 V supply voltage (VDD) but voltage transfer characteristics (VTC) curve is too marginal to guarantee a desirable inverter operation between 0 and -6 V. When low-energy UV (352 nm) was applied onto one of the two p-TFTs, which plays as a load in the inverter circuit, the VTC curve was adjusted to be more adequate for inverting operation due to the UV-induced modification on the threshold voltage and channel resistance of the load-TFT. Our UV-treated inverter also demonstrated much faster inverting dynamics than that of pristine inverter due to the lowered channel resistance of load-TFT.

Original languageEnglish
Pages (from-to)1072-1076
Number of pages5
JournalSynthetic Metals
Volume158
Issue number21-24
DOIs
Publication statusPublished - 2008 Dec 1

Fingerprint

Thin film transistors
Electric properties
transistors
electrical properties
Electric potential
thin films
electric potential
curves
Threshold voltage
threshold voltage
high voltages
Polymers
Lighting
illumination
Fabrication
fabrication
pentacene
energy
Networks (circuits)
polymers

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

Choi, Jeong M. ; Choi, Wonjun ; Lee, Seungjun ; Im, Seongil. / Controlling the electrical properties of pentacene-based organic inverter by ultraviolet. In: Synthetic Metals. 2008 ; Vol. 158, No. 21-24. pp. 1072-1076.
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Controlling the electrical properties of pentacene-based organic inverter by ultraviolet. / Choi, Jeong M.; Choi, Wonjun; Lee, Seungjun; Im, Seongil.

In: Synthetic Metals, Vol. 158, No. 21-24, 01.12.2008, p. 1072-1076.

Research output: Contribution to journalLetter

TY - JOUR

T1 - Controlling the electrical properties of pentacene-based organic inverter by ultraviolet

AU - Choi, Jeong M.

AU - Choi, Wonjun

AU - Lee, Seungjun

AU - Im, Seongil

PY - 2008/12/1

Y1 - 2008/12/1

N2 - We report on the fabrication of pentacene-based organic inverter with two p-channel thin-film transistors (TFTs) on polymer/AlOx bilayer dielectric, which has been patterned by using high-energy ultraviolet (UV, 254 nm) illumination. After pentacene-channel growth on the dielectric, our inverter showed a high-voltage gain of ∼8 under -6 V supply voltage (VDD) but voltage transfer characteristics (VTC) curve is too marginal to guarantee a desirable inverter operation between 0 and -6 V. When low-energy UV (352 nm) was applied onto one of the two p-TFTs, which plays as a load in the inverter circuit, the VTC curve was adjusted to be more adequate for inverting operation due to the UV-induced modification on the threshold voltage and channel resistance of the load-TFT. Our UV-treated inverter also demonstrated much faster inverting dynamics than that of pristine inverter due to the lowered channel resistance of load-TFT.

AB - We report on the fabrication of pentacene-based organic inverter with two p-channel thin-film transistors (TFTs) on polymer/AlOx bilayer dielectric, which has been patterned by using high-energy ultraviolet (UV, 254 nm) illumination. After pentacene-channel growth on the dielectric, our inverter showed a high-voltage gain of ∼8 under -6 V supply voltage (VDD) but voltage transfer characteristics (VTC) curve is too marginal to guarantee a desirable inverter operation between 0 and -6 V. When low-energy UV (352 nm) was applied onto one of the two p-TFTs, which plays as a load in the inverter circuit, the VTC curve was adjusted to be more adequate for inverting operation due to the UV-induced modification on the threshold voltage and channel resistance of the load-TFT. Our UV-treated inverter also demonstrated much faster inverting dynamics than that of pristine inverter due to the lowered channel resistance of load-TFT.

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JO - Synthetic Metals

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