Journal
NANO LETTERS
Volume 12, Issue 12, Pages 6408-6413Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl303755m
Keywords
Pyroelectric effect; nanogenerators; PZT; self-powered nanosystems
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Funding
- Airforce, MURI, U.S. Department of Energy, Office of Basic Energy Sciences [DE-FG02-07ER46394]
- NSF
- Chinese Academy of Sciences [KJCX2-YW-M13]
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [0946418] Funding Source: National Science Foundation
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We demonstrate a pyroelectric nanogenerator (PENG) based on a lead zirconate titanate (PZT) film, which has a pyroelectric coefficient of about 80 nC/cm(2)K. For a temperature change of 45 K at a rate of 0.2 K/s, the output open-circuit voltage and short-circuit current density of the PENG reached 22 V and 171 nA/cm(2), respectively, corresponding to a maximum power density of 0.215 mW/cm(3). A detailed theory was developed for understanding the high output voltage of PENG. A single electrical output pulse can directly drive a liquid crystal display (LCD) for longer than 60 s. A Li-ion battery was charged by the PENG at different working frequencies, which was used to drive a green light-emitting diode (LED). The demonstrated PENG shows potential applications in wireless sensors.
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