[TuP3H] H. Flexible materials

[TuP3H-03] Pyroelectric Response as a Function of Remanent Polarizationin Flexible P(VDF-TrFE) Infrared Sensors

〇KOKI MIKI¹, Shinya Kawano¹, Yoshiki Hidaka¹, Kenichi Goushi¹, Kenji Ishida¹ (1. Kyushu Univ. (Japan))

The pyroelectric effect, which underlies the operation of infrared sensors, originates from the spontaneous polarization of ferroelectric layers. Therefore, the polarization state of the ferroelectric layer is a critical factor governing sensor performance. In this study, we investigate the correlation between the remanent polarization and the pyroelectric response of infrared sensors based on the ferroelectric poly(vinylidene fluoride-trifluoroethylene [P(VDF-TrFE)]. Flexible pyroelectric infrared sensors with a NiCr/P(VDF-TrFE)/Al structure were fabricated on plastic substrates, and the pyroelectric response as a function of remanent polarization (P_r) was investigated. The results suggest that increasing P_r enhances the output voltage of the pyroelectric sensor, revealing a positive correlation between polarization state and sensor performance.