Screen Printed Electrodes (SPE) are fabricated by printing on non-conductive materials like alumina, ceramic, and plastic which serves as the electrode’s support. It consists of three electrodes namely, the working electrode (WE), Counter electrode (CE), and Reference electrode (RE), and these electrode surfaces are coated with various conductive inks like,
- WE (carbon, platinum, or gold inks)
- CE (Carbon ink)
- RE (silver/silver chloride ink)
The electrochemical performance, selectivity, and sensitivity of the SPE based sensors are determined by different conductive inks like Platinum, Gold, Silver, and Carbon.