Lateral nanowire/nanobelt based nanogenerators, piezotronics and piezo-phototronics

Zhong Lin Wang, Rusen Yang, Jun Zhou, Yong Qin, Chen Xu, Youfan Hu, Sheng Xu

Research output: Contribution to journalArticlepeer-review

154 Scopus citations

Abstract

Relying on the piezopotential created in ZnO under straining, nanogenerators, piezotronics and piezo-phototronics developed based on laterally bonded nanowires on a polymer substrate have been reviewed. The principle of the nanogenerator is a transient flow of electrons in external load as driven by the piezopotential created by dynamic straining. By integrating the contribution made by millions of nanowires, the output voltage has been raised to 1.2 V. Consequently, self-powered nanodevices have been demonstrated. This is an important platform technology for the future sensor network and the internet of things. Alternatively, the piezopotential can act as a gate voltage that can tune/gate the transport process of the charge carriers in the nanowire, which is a gate-electrode free field effect transistor (FET). The device fabricated based on this principle is called the piezotronic device. Piezo-phototronic effect is about the tuning and controlling of electro-optical processes by strain induced piezopotential. The piezotronic, piezophotonic and pieozo-phototronic devices are focused on low frequency applications in areas involving mechanical actions, such as MEMS/NEMS, nanorobotics, sensors, actuators and triggers.

Original languageEnglish (US)
Pages (from-to)320-329
Number of pages10
JournalMaterials Science and Engineering R: Reports
Volume70
Issue number3-6
DOIs
StatePublished - Nov 22 2010

Keywords

  • Internet of things
  • Nanogenerators
  • Nanowire
  • Piezo-photonics
  • Piezo-phototronics
  • Piezotronics
  • Self-powered nanodevices/nanosystems
  • Sensor network
  • ZnO

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