A flexible piezoelectric energy harvester(f-PEH) that converts tiny mechanical and vibrational energy resources into electric signals without any restraints is drawing attention as a self-powered source to operate flexible electronic systems. In particular, the nanocomposites-based f-PEHs fabricated by a simple and low-cost spin-coating method show a mechanically stable and high output performance compared to only piezoelectric polymers or perovskite thin films. Here, the non-piezoelectric polymer matrix of the nanocomposite-based f-PEH is replaced by a P(VDF-TrFE) piezoelectric polymer to improve the output performance generated from the f-PEH. The piezoelectric hybrid nanocomposite is produced by distributing the perovskite PZT nanoparticles inside the piezoelectric elastomer; subsequently, the piezoelectric hybrid material is spin-coated onto a thin metal substrate to achieve a nanocomposite-based f-PEH. A fabricated energy device after a two-step poling process shows a maximum output voltage of 9.4 V and a current of 160 nA under repeated mechanical bending. Finite element analysis(FEA) simulation results support the experimental results.

Abstracts
 1. 서 론
 2. 실험방법
  2.1 PZT 압전 나노입자 제조
  2.2 압전 나노복합소재 제조 및 플렉서블 에너지 하베스터 제작
  2.3 생성 전압 및 전류 신호 측정
 3. 결과 및 고찰
  3.1 나노복합소재 기반의 에너지 하베스터
  3.2 제작된 플렉서블 압전 소자의 발전 성능
  3.3 다중물리 시뮬레이션 수행 및 해석 결과
  3.4 출력 전력 평가, 측정 조건에 따른 성능평가 및내구성 테스트 결과
  3.5 제작된 에너지 하베스터의 응용
 4. 결 론
 References

• 박귀일(경북대학교 신소재공학부 금속신소재공학전공) | Kwi-Il Park (School of Materials Science and Engineering, Kyungpook National University) Corresponding author
• 현동열(경북대학교 신소재공학부 금속신소재공학전공) | Dong Yeol Hyeon (School of Materials Science and Engineering, Kyungpook National University)
• 권유정(경북대학교 신소재공학부 금속신소재공학전공) | Yu Jeong Kwon (School of Materials Science and Engineering, Kyungpook National University)