Electro-mechanical-carrier coupling behaviors of piezoelectric semiconductor fibers with p–n junctions under pull-out loading

Journal of Applied Physics, Journal Year: 2025, Volume and Issue: 137(8)

Published: Feb. 24, 2025

Due to their unique properties between carrier redistribution and built-in electric potential induced by external stress, piezoelectric semiconductor (PS) fibers are widely used in intelligent structures. In this paper, electromechanical coupling behaviors of PN junctions segmented PS fiber under pull-out loading analytically investigated. Based on the shear-lag model, stress transfer relationship elastic matrix is established. Closed form solutions axial interfacial shear potential, field, perturbation obtained. Results show that initial concentration has a significant influence compared with single homogeneous fiber. The homojunction heterojunction sensitive concentrations doping. Besides doping concentration, relevant fields can be regulated radius ratio as well. On basis linearized effect I–V curve plots small forward-biased voltage been investigated fundamental research will helpful understanding physical mechanism regulation junction composites guide for designing devices practical applications.

Language: Английский

Electro-mechanical-carrier coupling model of single piezoelectric semiconductor fiber pull-out

Mechanics of Materials, Journal Year: 2024, Volume and Issue: 200, P. 105188 - 105188

Published: Nov. 1, 2024

Language: Английский