Chemical Sensor Utilizing a Chemically Sensitive Electrode in Combination with Thin Diamond Layers

A solid state chemical sensing device is described in which a chemically sensitive electrode, and at least one diamond film are deposited on a conductive or insulating substrate. The device forms a sensing structure in which conduction of current through the device in the presence of a target chemical is dominated by space charged limited current, thereby providing enhanced sensitivity and selectivity.

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U.S. Patent 5,656,827: Chemical sensor utilizing a chemically sensitive electrode in combination with thin diamond layers