Electro-chemical sensors, sensor arrays and circuits

An electro-chemical sensor array comprising a plurality of electro-chemical sensor elements, wherein at least one electro-chemical sensor element of said plurality of electro-chemical sensor elements comprises:

• a first electrode;
• a second electrode spaced apart from said first electrode;
• and
• a semiconductor channel in electrical contact with said first and second electrodes,
• wherein said semiconductor channel comprises a trapping material,
• wherein said trapping material reduces an ability of said semiconductor channel to conduct a current of charge carriers by trapping at least some of said charge carriers to localized regions within said semiconductor channel,
• wherein said semiconductor channel comprises at least a portion configured to be exposed to an analyte to be detected, and
• wherein said trapping material, when exposed to said analyte, interacts with said analyte so as to at least partially restore the ability of said semiconductor channel to conduct said current of charge carriers.

An electrical circuit comprising an electro-chemical sensor element, wherein said electro-chemical sensor element comprises:

• a first electrode;
• a second electrode spaced apart from said first electrode;
• and
• a semiconductor channel in electrical contact with said first and second electrodes,
• wherein said semiconductor channel comprises a trapping material,
• wherein said trapping material reduces an ability of said semiconductor channel to conduct a current of charge carriers by trapping at least some of said charge carriers to localized regions within said semiconductor channel,
• wherein said semiconductor channel comprises at least a portion configured to be exposed to an analyte to be detected, and
• wherein said trapping material, when exposed to said analyte, interacts with said analyte so as to at least partially restore the ability of said semiconductor channel to conduct said current of charge carriers.