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Tuning the threshold voltage in electrolyte-gated organic field-effect transistors.

ABSTRACT: Low-voltage organic field-effect transistors (OFETs) promise for low power consumption logic circuits. To enhance the efficiency of the logic circuits, the control of the threshold voltage of the transistors are based on is crucial. We report the systematic control of the threshold voltage of electrolyte-gated OFETs by using various gate metals. The influence of the work function of the metal is investigated in metal-electrolyte-organic semiconductor diodes and electrolyte-gated OFETs. A good correlation is found between the flat-band potential and the threshold voltage. The possibility to tune the threshold voltage over half the potential range applied and to obtain depletion-like (positive threshold voltage) and enhancement (negative threshold voltage) transistors is of great interest when integrating these transistors in logic circuits. The combination of a depletion-like and enhancement transistor leads to a clear improvement of the noise margins in depleted-load unipolar inverters.

SUBMITTER: Kergoat L 

PROVIDER: S-EPMC3365148 | biostudies-literature | 2012 May

REPOSITORIES: biostudies-literature

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Tuning the threshold voltage in electrolyte-gated organic field-effect transistors.

Kergoat Loïg L   Herlogsson Lars L   Piro Benoit B   Pham Minh Chau MC   Horowitz Gilles G   Crispin Xavier X   Berggren Magnus M  

Proceedings of the National Academy of Sciences of the United States of America 20120514 22

Low-voltage organic field-effect transistors (OFETs) promise for low power consumption logic circuits. To enhance the efficiency of the logic circuits, the control of the threshold voltage of the transistors are based on is crucial. We report the systematic control of the threshold voltage of electrolyte-gated OFETs by using various gate metals. The influence of the work function of the metal is investigated in metal-electrolyte-organic semiconductor diodes and electrolyte-gated OFETs. A good co  ...[more]

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