《10.1007-s11431-013-5373-4》.pdf

SCIENCE CHINA Technological Sciences Progress of Projects Supported by NSFC November 2013 Vol.56 No.11: 2636–2641 doi: 10.1007/s11431-013-5373-4 Investigation and characterization of an arc-shaped piezoelectric generator 1 1,2 1 1 1* HAN MengDi , LIU Wen , ZHANG XiaoSheng , MENG Bo ZHANG HaiXia 1 Institute of Microelectronics, Peking University, Beijing 100871, China; 2 Peking University Shenzhen Graduate School, Shenzhen 518055, China Received August 17, 2013; accepted September 16, 2013; published online September 30, 2013 A novel arc-shaped piezoelectric generator based on flexible PVDF thin film is presented and systemically studied. With a pe- riodical external force, the generator can produce peak voltage of 45.6 V and peak power of 30.7 μW. The maximum power density reaches 38.4 μW/cm3 with a 4 cm × 2 cm × 100 μm device, at the optimum load resistance of 33.33 MOhm. The influ- ence of frequency, size dimension and load resistance are investigated through experimental measurements. With this high output arc-shaped generator, capacitors can be effectively charged and three commercial LEDs have been directly lighted without any energy storage unit. piezoelectric gener