Piezotronic and Piezophototronic Effects

Zhong Lin Wang

Research output: Contribution to journalArticlepeer-review

225 Scopus citations


Owing to the polarization of ions in a crystal that has noncentral symmetry, a piezoelectric potential (piezopotential) is created in the material by applying a stress. The creation of piezopotential together with the presence of Schottky contacts are the fundamental physics responsible for a few important nanotechnologies. The nanogenerator is based on the piezopotential-driven transient flow of electrons in the external load. On the basis of nanomaterials in the wurtzite semiconductors, such as ZnO and GaN, electronics fabricated by using a piezopotential as a gate voltage are called piezotronics, with applications in strain/force/pressure-triggered/controlled electronic devices, sensors, and logic gates. The piezophototronic effect is a result of three-way coupling among piezoelectricity, photonic excitation, and semiconductor transport, which allows tuning and controlling of electro-optical processes by a strain-induced piezopotential. © 2010 American Chemical Society.
Original languageEnglish (US)
Pages (from-to)1388-1393
Number of pages6
JournalThe Journal of Physical Chemistry Letters
Issue number9
StatePublished - Apr 13 2010
Externally publishedYes

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: Thanks to the contribution of many my former and current group members. Thanks to the support from DARPA, BES DOE, NSF, KAUST and WPI (NIMS).
This publication acknowledges KAUST support, but has no KAUST affiliated authors.


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