The quantum tunneling effect is a classical phenomenon in quantum physics, which allows tiny particles to pass through seemingly insurmountable energy barriers, breaking the rule of "energy determines motion" in classical mechanics. This discovery not only changed scientists' understanding of the microscopic world, but also played a key role in semiconductor technology. For example, tunneling diodes use this effect to enable fast current switching, while newer transistors, such as TFET, reduce power consumption by controlling particle tunneling. In addition, flash memory devices also rely on quantum tunneling to store data, making electronic devices more power-efficient and smaller. This article explains how to calculate the probability of a particle crossing an obstacle and details the three major applications of quantum tunneling in semiconductors: high-speed switching, low-power circuitry, and high-efficiency storage. The article also explores possible future developments, such as the use of tunneling effects to manipulate information in quantum computers, or the use of new materials to further reduce energy losses. These studies provide an important direction for the innovation of next-generation electronic devices.
H. D. Liu (Tue,) studied this question.