Acta Mechanica Solida Sinica

, Volume 31, Issue 2, pp 127–140 | Cite as

Electromechanical Fields Near a Circular PN Junction Between Two Piezoelectric Semiconductors

  • Yixun Luo
  • Ruoran Cheng
  • Chunli ZhangEmail author
  • Weiqiu Chen
  • Jiashi YangEmail author
Original Paper


We study electromechanical fields near the interface between a circular piezoelectric semiconductor cylinder and another piezoelectric semiconductor in which it is embedded. The cylinder is p-doped. The surrounding material is n-doped. The phenomenological theory of piezoelectric semiconductors consisting of the equations of piezoelectricity and the conservation of charge for holes and electrons is used. The theory is linearized for small carrier concentration perturbations. An analytical solution is obtained, showing the formation of a PN junction near the interface. Various electromechanical fields associated with the junction are calculated. The effects of a few physical parameters are examined.


Piezoelectric semiconductors Cylinder Carriers PN junction Electromechanical coupling 



This work was supported by the National Natural Science Foundation of China (Nos. 11672265, 11621062, and 11202182), the Fundamental Research Funds for the Central Universities (Nos. 2016QNA4026 and 2016XZZX001-05), and the open foundation of Zhejiang Provincial Top Key Discipline of Mechanical Engineering.


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Copyright information

© The Chinese Society of Theoretical and Applied Mechanics and Technology 2018

Authors and Affiliations

  1. 1.Department of Engineering MechanicsZhejiang UniversityHangzhouChina
  2. 2.Department of Mechanical and Materials EngineeringUniversity of Nebraska-LincolnLincolnUSA
  3. 3.Soft Matter Research Center (SMRC)Zhejiang UniversityHangzhouChina
  4. 4.Key Laboratory of Soft Machines and Smart Devices of Zhejiang ProvinceHangzhouChina

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