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Abstract We theoretically study the flexural vibration of a laminated piezoelectric semiconductor (PS) composite plate. Based on the two-dimensional (2D) equations for the laminated thin-film PS plates, the analytical s of the electromechanical fields and distribution of electrons in the thin-film PS plate subjected to a steady-state flexural vibration are obtained. We numerically investigated the effects of the amplitude and excitation frequency of mechanical loading and the initial concentration of carriers on the macroscopic responses of the PS structure. Numerical results show that the amplitudes of all physical quantities in the plate have the largest values under the first-order natural frequency. Under the second/third and other-higher order natural frequencies, each physical field has many local maximum or minimum regions. The carriers move to or leave these local regions. In addition, due to the screening effect of carriers, only the initial carriers with certain concentrations have a tuning effect on the PS plate.
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Received: 02 August 2019
Published: 14 April 2020
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Corresponding Authors:
Chunli Zhang
E-mail: zhangcl01@zju.edu.cn
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2020, Vol. 41 
