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Piezoelectric Properties of 0.65Pb(Zr1-xTix)O3-0.35Pb(Zn1/6Ni1/6Nb2/3)O3 Ceramics and Their Application to Piezoelectric Energy Harvester

0.65Pb(Zr1-xTix)O3-0.35Pb(Zn1/6Ni1/6Nb2/3)O3 세라믹의 압전 특성 및 압전 에너지 하베스터 적용

  • Jo, Sora (Electronic Convergence Materials & Device Research Center, Korea Electronics Technology Institute) ;
  • Kim, Daesu (Electronic Convergence Materials & Device Research Center, Korea Electronics Technology Institute) ;
  • Cho, Yuri (Electronic Convergence Materials & Device Research Center, Korea Electronics Technology Institute) ;
  • Son, Sin Joong (Electronic Convergence Materials & Device Research Center, Korea Electronics Technology Institute) ;
  • Kang, Hyung-Won (Electronic Convergence Materials & Device Research Center, Korea Electronics Technology Institute) ;
  • Nahm, Sahn (Department of Materials Science and Engineering, Korea University) ;
  • Han, Seung Ho (Electronic Convergence Materials & Device Research Center, Korea Electronics Technology Institute)
  • 조소라 (전자부품연구원 융복합전자소재연구센터) ;
  • 김대수 (전자부품연구원 융복합전자소재연구센터) ;
  • 조유리 (전자부품연구원 융복합전자소재연구센터) ;
  • 손신중 (전자부품연구원 융복합전자소재연구센터) ;
  • 강형원 (전자부품연구원 융복합전자소재연구센터) ;
  • 남산 (고려대학교 신소재공학과) ;
  • 한승호 (전자부품연구원 융복합전자소재연구센터)
  • Received : 2018.02.12
  • Accepted : 2018.02.28
  • Published : 2018.05.01

Abstract

The piezoelectric properties of $0.65Pb(Zr_{1-x}Ti_x)O_3-0.35Pb(Zn_{1/6}Ni_{1/6}Nb_{2/3})O_3$ ($PZT_x-PZNN$) ceramics with $0.530{\leq}x{\leq}0.555$ were investigated for application to piezoelectric energy harvesters. Although a morphotropic phase boundary (MPB) was found at approximately x = 0.545, the ceramic with the highest figure of merit (FOM) ($d_{33}{\times}g_{33}$) was observed at a composition of x = 0.540. Values of this figure of merit, $d_{33}{\times}g_{33}$, of $19.6pm^2/N$ and $20.2pm^2/N$ were obtained from $PZT_{0.540}-PZNN$ ceramics sintered at $920^{\circ}C$ and $950^{\circ}C$, respectively. A high output power of $937{\mu}W$ and a high power density of $3.3mW/cm^3$ were obtained from unimorph-type piezoelectric energy harvesters fabricated using $PZT_{0.540}-PZNN$ ceramic sintered at $920^{\circ}C$ for 4h.

Keywords

References

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