Electrical behaviors of a piezoelectric semiconductor fiber under a local temperature change

We study the effects of a local temperature change on the electrical behaviors of a piezoelectric semiconductor fiber in extensional deformation. A one-dimensional model for thin fibers derived previously from the macroscopic theory of thermopiezoelectric semiconductors is used. Through a combined t...

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Bibliographic Details
Published in:Nano energy 2019-12, Vol.66, p.104081, Article 104081
Main Authors: Cheng, Ruoran, Zhang, Chunli, Chen, Weiqiu, Yang, Jiashi
Format: Article
Language:English
Subjects:
Piezoelectric
Piezotronic
Pyroelectric
Semiconductor
Thermal
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Summary:We study the effects of a local temperature change on the electrical behaviors of a piezoelectric semiconductor fiber in extensional deformation. A one-dimensional model for thin fibers derived previously from the macroscopic theory of thermopiezoelectric semiconductors is used. Through a combined theoretical and numerical analysis, it is shown that a local temperature change produces a local electric potential barrier and a potential well, which prohibits the flow of currents along the fiber unless the voltage is above a temperature-dependent critical value. The results are useful for thermally manipulating the currents in the fiber and have potential applications in piezotronics. [Display omitted] •The effects of a local temperature change on the electrical behaviors of a PS fiber in extension are investigated.•A local temperature change causes local polarization and thereby produces a local potential barrier and well.•The potential barrier and well forbid the flow of currents along the fiber at low voltages.•The local temperature change behaves mainly like a switch, and sometimes like a diode.
ISSN:2211-2855
DOI:10.1016/j.nanoen.2019.104081