エレクトレットに強化される焦電発電に関する研究

抄録

This study presents a novel thermal energy harvester design with standalone field-enhanced pyroelectric cycle. An electret is introduced to apply the electrical field on the ferroelectric to replace the external voltage source. With synchronized electrical fields with the temperature fluctuations, a novel electret-enhanced pyroelectric generation mode can be achieved with higher harvesting performance than the electrostatic mode and pyroelectric mode. Up to 8.95 μW/cm³ power output has been obtained with less than 3 °C temperature fluctuation in our prototype with KTN crystal.