Laterally Coupled Dual-Gate Oxide-Based Transistors on Sodium Alginate Electrolytes

Laterally coupled indium-zinc-oxide electric-double-layer (EDL) transistors gated by solution-processed sodium alginate electrolyte films are self-assembled on glass substrates. Due to the strong EDL effect, a low-operation voltage of 1.5 V, a high-current ON/OFF ratio of similar to 3.1 x 10(6) and a high-electron mobility of similar to 8.8 cm(2)/V s are obtained. Furthermore, AND logic operation is demonstrated when two in-plane gate electrodes are used as the input terminals. Such low-voltage laterally coupled oxide EDL transistors have potential applications in portable biosensors and synaptic electronics.