A 30 nm gate-all-around poly-Si nano wire thin-film transistor

In this work, gate-all-around (GAA) poly-Si nano wire (NW) thin film transistors (TFTs) with record physical gate length of 30 nm and driving current >100 μA/μm are demonstrated. The cross section of the NW channel is as small as 35 nm × 8 nm. The tight GAA and NW structure enhances the gate potential control ability effectively, therefore, excellent short channel and narrow width behaviors can be obtained. These results reveal the possibility of three-dimensional integrated circuits.