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Related Experiment Video

Updated: May 17, 2026

Preparation of ZnO Nanorod/Graphene/ZnO Nanorod Epitaxial Double Heterostructure for Piezoelectrical Nanogenerator by Using Preheating Hydrothermal
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Pyroelectric nanogenerators for driving wireless sensors.

Ya Yang1, Sihong Wang, Yan Zhang

  • 1School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, United States.

Nano Letters
|November 9, 2012
PubMed
Summary
This summary is machine-generated.

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This study presents a lead zirconate titanate (PZT) pyroelectric nanogenerator (PENG) achieving 22 V output. This PENG can power devices like liquid crystal displays and charge batteries for wireless sensors.

Area of Science:

  • Materials Science
  • Nanotechnology
  • Energy Harvesting

Background:

  • Pyroelectric nanogenerators (PENGs) offer a promising route for harvesting thermal energy.
  • Lead zirconate titanate (PZT) is a well-known material with significant pyroelectric properties.

Purpose of the Study:

  • To demonstrate a PENG utilizing a PZT film.
  • To characterize its electrical output and explore its potential applications.
  • To develop a theoretical understanding of its high output voltage.

Main Methods:

  • Fabrication of a PENG using a PZT film.
  • Measurement of open-circuit voltage and short-circuit current density under thermal cycling.
  • Theoretical modeling to explain the observed output voltage.

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  • Demonstration of device powering capabilities (LCD, Li-ion battery charging).

    • Main Results:

    • The PZT-based PENG exhibited a pyroelectric coefficient of -80 nC/cm(2)K.
    • An output open-circuit voltage of 22 V and short-circuit current density of 171 nA/cm(2) were achieved for a 45 K temperature change.
    • Maximum power density reached 0.215 mW/cm(3).
    • A single electrical pulse powered an LCD for over 60 seconds.
    • Successful charging of a Li-ion battery to power an LED.

    Conclusions:

    • The developed PZT-based PENG demonstrates efficient thermal energy harvesting.
    • The device shows practical potential for powering low-power electronics and enabling wireless sensor applications.
    • The theoretical framework provides insight into the high voltage generation mechanism.