MSE PRO™ GFET (Graphene Field-Effect Transistor) Chip for Sensing Applications (4mm x 4mm)

MSE PRO™ provide GFET (Graphene Field-Effect Transistor) Chip for Sensing Applications (4mm x 4mm). The 4x4 chip is designed for sensing applications, and it is compatible with measurements in a liquid medium. The metal pads are passivated to avoid degradation and reduce leakage currents. It also includes a non-encapsulated electrode at the center of the chip, which allows for liquid gating without the need of an external gate electrode (such as Ag/AgCl probes). This device architecture enhances signal-to-noise ratio and reduces parasitics.

This version provides 28 graphene channels: 7 of them are one-channel devices and 7 of them are three-channel devices. These two geometries add flexibility to the measurement scheme (ΔVD or ΔIsd). The die is packaged and wirebonded to a leadless chip carrier (LCC).

Typical Specifications

Growth method: CVD synthesis
Graphene transfer: Polymer assisted transfer
Substrate: Si/SiO₂
Substrate thickness: 525 μm
Resistivity of Si substrate: 1-10 Ω.cm
Metallization: 50nm Au-based Contacts
Encapsulation: 50 nm Al₂O₃
Chip dimensions: 4 mm x 4 mm
Number of GFETs per chip: 14
Number of graphene channels per chip: 28
Optical Yield: ≥75
Average Dirac point (liquid gating): <1.5 V

Absolute maximum ratings

Maximum gate-source voltage (liquid gating in PBS): ± 1.5V
Maximum temperature rating: 150 °C
Maximum drain-source current density: 10⁷A.cm^-2

Quality control

All our samples are subjected to a rigorous QC in order to ensure a high quality products.

Optical Microscopy inspection of all the devices
Raman spectroscopy of each fabrication batch
Electrical characterisation (back gating and liquid gating) of each fabrication batch
AFM of each fabrication batch.

Applications

Graphene field-effect transistors (GFETs) have unprecedented sensitivity to the surrounding environment and is an ideal transducer for a variety of sensing applications. Depending on the application. This chip can be tuned to be sensitive only to the stimulus of interest and have shown breakthrough performance in areas such as graphene device research, chemical/gas sensing, biosensors, chemical sensors, bioelectronics, healthcare and industrial safety applications.

MSE PRO™ GFET (Graphene Field-Effect Transistor) Chip for Sensing Applications (4mm x 4mm)

Typical Specifications

Absolute maximum ratings

Quality control

Applications

MSE Supplies offers high quality and best price on the market for our graphene products. Please contact us for more information.

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