(A) study of thermally stable single transistor latch for neuromorphic application

Abstract

The usage of a vertical nanowire Si MOSFET to create a thermally stable single-transistor neuron is demonstrated. Recently, many devices are being studied to mimic the neural firing of biological neurons. Among them, when using a MOSFET, a single transistor latch (STL) is mainly used to mimic neural firing. However, the concept of STL is sensitive to temperature (T) because it is generally occurred by impact ionization (I.I.). And, it is not suitable for a stable neuromorphic system. As an alternative to the thermally sensitive I.I., thermally insensitive band-to-band tunneling (BTBT) is used to enable the STL to function. By using BTBT, STL with thermal stability can be achieved. Spiking neural network (SNN) simulations have shown that the ability to recognize handwritten numbers in the MNIST dataset was not T-sensitive.