The Fabrication and Characteristics of 0-3 PbTiO$_3$/P(VDF/TrFE) Nanocomposite Thin Films for Passive Pyroelectric Infrared Sensors

The Fabrication and Characteristics of 0-3 PbTiO$_3$/P(VDF/TrFE) Nanocomposite Thin Films for Passive Pyroelectric Infrared Sensors

0-3 PbTiO$_3$/P(VDF/TrFE) nanocomposite thin films for passive pyroelectric infrared sensors were fabricated by a two-step spin coating technique. 65wt% VDF and 35 wt% TrFE was formed into a P(VDF/TrFE) powder. Nano size PbTiO$_3$ powder was used. 0-3 connectivity of PbTiO$_3$/P(VDF/TrFE) composite film was successfully achieved and observed using SEM photography. The dielectric constant and pyroelectric coefficient were measured and compared with P(VDF/TrFE). A very low dielectric constant (13.48 at 1KHz and sufficiently high pyroelectric coefficient (3.101 nC/$\textrm{cm}^2$ㆍk at 5$0^{\circ}C$) were measured. This nanocomposite can be used for a new pyroelectric infrared sensor to achieve better performance.