Pyroelectric response of ferroelectric nanowires: Size effect and electric energy harvesting

Journal Article · Fri Jan 01 00:00:00 EST 2010 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3474964· OSTI ID:1055170

Morozovska, A. N. ^[1]; Eliseev, E. A. ^[1]; Svechnikov, S. V. ^[1]; Kalinin, Sergei V ^[2]

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1. National Academy of Science of Ukraine, Kiev, Ukraine
2. ORNL

The size effect on pyroelectric response of ferroelectric nanowires is analyzed. The pyroelectric coefficient strongly increases with the wire radius decrease and diverges at critical radius Rcr corresponding to the size-driven transition into paraelectric phase. Size-driven enhancement of pyroelectric coupling leads to the giant pyroelectric current and voltage generation by the polarized ferroelectric nanoparticles in response to the temperature fluctuation. The maximum efficiency of the pyroelectric energy harvesting and bolometric detection is derived, and is shown to approach the Carnot limit for low temperatures.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1055170
• Journal Information: Journal of Applied Physics, Vol. 108, Issue 4; ISSN 0021-8979
• Country of Publication: United States
• Language: English