The effect of polymer fill ratio in pillar structure for piezoelectric energy harvester

• Published in: Electronic materials letters Vol. 9; no. 4; pp. 393 - 397
• Main Authors: Lee, Kyoung-Soo, Shin, Dong-Jin, Chae, Moon-Soon, Koo, Sang-Mo, Ha, Jae-Geun, Koh, Jung-Hyuk, Cho, Kyung-Ho, Seo, Chang-Eui, Jeong, Soon-Jong
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Netherlands 01.07.2013; 대한금속·재료학회
• Subjects: Addition polymerization; Arrays; Ceramics; Characterization and Evaluation of Materials; Chemistry and Materials Science; Condensed Matter Physics; Energy harvesting; Energy use; Harvesters; Materials Science; Nanotechnology; Nanotechnology and Microengineering; Optical and Electronic Materials; Piezoelectric ceramics; Piezoelectricity; Pillars; 전자/정보통신공학; piezoelectric materials; energy harvester; fill ratio; PMN-PZT
• ISSN: 1738-8090; 2093-6788
• DOI: 10.1007/s13391-013-0008-2

One method of energy harvesting is to use piezoelectric devices, which are able to interchange electrical energy and mechanical strain or vibration. This study is to experimentally investigate the behavior of a piezoelectric energy harvester that was constructed with an array of pillar structures made of 0.2(PbMg 1/3 Nb 2/3 O 3 )−0.8(PbZr 0.475 Ti 0.525 O 3 ) with polymer fill. Additionally, the aim of this study is to optimize the fill ratio of the composite piezoelectric ceramics and polymer structure. 0.2(PbMg 1/3 Nb 2/3 O 3 )−0.8(PbZr 0.475 Ti 0.525 O 3 ) ceramics were employed as piezoelectric ceramic pillars, prepared in a rectangular shape. These piezoelectric ceramic pillars were sintered separately and attached to a bottom metallic electrode with poled states. The optimum ratio of ceramic pillar and elastic polymer ratio will be discussed. Piezoelectric properties will be discussed including the piezoelectric constant, piezoelectric voltage constants, and electromechanical coupling coefficient. We will present how the harvested energy depends on the lead resistor.