ZnO nanowire transistor inverter using top-gate electrodes with different work functions

Young Tack Lee, Jong Keun Kim, Ryong Ha, Heon-Jin Choi, Seongil Im

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

ZnO-nanowire field effect transistors (FETs) with a top gate Al 2O3 dielectric and different metal electrodes were fabricated to form a low voltage electrical inverter. Two FETs with Pd and Ni/Ti gates whose respective work functions are so different as 5.3 and 4.3 eV were chosen to play as driver and load, since such different work functions lead to a threshold voltage (VT) difference of at least 1 V between the two FETs. Our FETs with Pd and Ni/Ti, respectively, showed 0.8 and -0.3 V for their VT values, while our inverter exhibited a desirable voltage transfer characteristics with voltage gain of over 15 during low voltage electrical gating.

Original languageEnglish
Article number153507
JournalApplied Physics Letters
Volume99
Issue number15
DOIs
Publication statusPublished - 2011 Oct 10

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nanowires
transistors
field effect transistors
electrodes
low voltage
electric potential
threshold voltage
metals

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

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abstract = "ZnO-nanowire field effect transistors (FETs) with a top gate Al 2O3 dielectric and different metal electrodes were fabricated to form a low voltage electrical inverter. Two FETs with Pd and Ni/Ti gates whose respective work functions are so different as 5.3 and 4.3 eV were chosen to play as driver and load, since such different work functions lead to a threshold voltage (VT) difference of at least 1 V between the two FETs. Our FETs with Pd and Ni/Ti, respectively, showed 0.8 and -0.3 V for their VT values, while our inverter exhibited a desirable voltage transfer characteristics with voltage gain of over 15 during low voltage electrical gating.",
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ZnO nanowire transistor inverter using top-gate electrodes with different work functions. / Tack Lee, Young; Keun Kim, Jong; Ha, Ryong; Choi, Heon-Jin; Im, Seongil.

In: Applied Physics Letters, Vol. 99, No. 15, 153507, 10.10.2011.

Research output: Contribution to journalArticle

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AU - Tack Lee, Young

AU - Keun Kim, Jong

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