Patent ID: 11943548
Assignee: FUNDACIÓ INSTITUT CATALÀ DE NANOCIÈNCIA I NANOTECNOLOGIA
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  A | IPC H

Claim 19:
20. The two dimensional sensor array according to claim 8, comprising manufacturing the two dimensional sensor array using a method comprising:
creating a matrix of sensing elements where each sensing element is a GFET transistor device;
depositing a flexible polyimide substrate polymer layer on a sacrificial silicon wafer;
defining a first layer of metallic tracks using a lift-off technique;
transferring a single graphene layer from a growth substrate onto the polyimide substrate layer;
defining the shape of the transistor channels by etching the graphene layer with oxygen plasma;
depositing a second metal layer on top of the first metal layer and defining the second metal layer into the transistor's source and drain terminals using a lift-off technique;
defining the active area on the transistors' channels with an insulation layer, which insulation layer is defined into two insulator parts deposited on each transistor's source and drain;
defining the polyimide substrate by reactive ion etching;
depositing an electrolyte on the transistors' side opposite the substrates;
positioning an Ag/Cl electrode inside the electrolyte of each transistor, the Ag/Cl electrodes forming the bases of transistor.