Journal
APPLIED PHYSICS LETTERS
Volume 100, Issue 2, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3676662
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Funding
- EU [FP6-NMP-2006-676033345]
- Nanosystems Initiative Munich (NIM)
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Solid polyelectrolytes have been used in transistor devices to achieve gating with high capacitance. We use a solid polyethylene oxide/LiClO4 electrolyte to replace aqueous electrolytes as a gate for surface-conductive diamond field-effect transistors (FET). The resulting transistor shows characteristics comparable to those of aqueous electrolyte-gated diamond FETs. We investigate the polyelectrolyte/diamond interface with impedance spectroscopy and cyclic voltammetry, showing the electrochemical stability of the interface and capacitive gating up to 100 Hz. Hall effect measurements on the polyelectrolyte-gated devices are compared to those with liquid gates. The solid and transparent polyelectrolyte gates promise further applications for surface-conductive diamond FETs. (C) 2012 American Institute of Physics. [doi: 10.1063/1.3676662]
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