Low-temperature-poling awakened high dielectric breakdown strength and outstanding improvement of discharge energy density of (Pb,La)(Zr,Sn,Ti)O3 relaxor thin film

Biaolin Peng, Silin Tang, Li Lu, Qi Zhang, Haitao Huang, Gang Bai, Lei Miao, Bingsuo Zou, Laijun Liu, Wenhong Sun, Zhong Lin Wang

研究成果: Article

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Ferroelectric thin films possessing high dielectric breakdown strength (DBS) are attractive materials employed to satisfy the requirements of miniaturization and integration of electronic components, especially for dielectric capacitors with large discharge energy density (W). In this work, it is demonstrated for the first time that high DBS in ferroelectric thin film can be awakened by a low-temperature-poling method. Mn-doped Pb0.97La0.02(Zr0.905Sn0.015Ti0.08)O3 (PLZST) relaxor thin films were prepared by using a sol-gel method, as when poled at near liquid nitrogen temperature, its DBS and W at room temperature are greatly enhanced (nearly doubled) from 1286 kV/cm to 2000 kV/cm, and from 16.6 J/cm3 to 31.2 J/cm3, respectively. The high ordering of defect dipoles during the low-temperature-poling process is responsible for the great enhancement of the awakened DBS and the outstanding improvement of the W. It concludes that the low-temperature-poling method can provide a new alternative strategy to strength the DBS and thus to improve the electrical performances of ferroelectric materials for the applications required strong electric fields in many fields, especially for dielectric energy storage, electrocaloric cooling, and energy harvesting, etc.

元の言語English
記事番号105132
ジャーナルNano Energy
77
DOI
出版物ステータスPublished - 2020 11

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)
  • Electrical and Electronic Engineering

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