Analysis of piezoelectric semiconductor fibers under gradient temperature changes

Piezoelectric semiconductors (PSs) possess both semiconducting properties and piezoelectric coupling effects, making them optimal building blocks for semiconductor devices. PS fiber-like structures have wide applications in multi-functional semiconductor devices. In this paper, a one-dimensional (1D) theoretical model is established to describe the piezotronic responses of a PS fiber under gradient temperature changes. The theoretical model aims to explain the mechanism behind the resistance change caused by such gradient temperature changes. Numerical results demonstrate that a gradient temperature change significantly affects the physical fields within the PS fiber, and can induce changes in its surface resistance. It provides important theoretical guidance on the development of piezotronic devices that are sensitive to temperature effects.