Piezotronic Bipolar Junction Transistor as a Wearable Energy Harvester

Emad Iranmanesh*, Zihao Liang, Shuxin Lin, Weiwei Li, Charalampos Doumanidis, Hang Zhou*, Kai Wang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


This article details the applicability of a thin-film piezotronic bipolar junction transistor as a wearable energy harvester that is capable of signal rectification without any extra and complicated circuitry. An analytical model and equivalent circuit elaborate its working principle and device physics. A preliminary experimental study through 90°-flexion, tapping, and walking proves the device concept and demonstrates that such a harvester can generate power promising for wearable electronics. Coupled with the ease of large-area fabrication processes, a pixelated array that is potentially achievable, makes it a potential candidate for energy sources for internet of things (IoT) nodes and wearable electronics.

Original languageEnglish
Pages (from-to)4905-4912
Number of pages8
JournalIEEE Transactions on Electron Devices
Issue number9
StatePublished - 1 Sep 2023


  • Bipolar junction transistor
  • piezotronic energy harvester
  • wearable electronics


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