Photopyroelectric characterization and polarization stability
of spin-coated corona charged P(VDF/TrFE) copolymer films

Zhongfu Xia, Juping Song, Gangjin Chen, Yewen Zhang, S.L.Bravina*,
N.V.Morozovsky

Pohl Institute of Solid State Physics Tongji University,
1239 Siping Road, Shanghai 200092, China
*Institute of Physics, National Academy of Sciences of Ukraine,
46 Nauki Ave., 252650 Kyiv, Ukraine

Undersurface pyroelectric probing of manufactured spin coated
corona charged P(VDF/TrFE) films of 2-20 mm thickness has
been performed. Frequency dependences of pyroelectric responce to
sinusoidally modulated radiation flux were studied in modulation frequency
range 10 Hz-100 kHz. Results of pyroelectric studies and conditions
of polarization stability improvement are discussed from the application
view point.