D. Setiadi et al., Application of a conductive polymer to self-absorbing ferroelectric polymer pyroelectric sensors, INFR PHYS T, 40(4), 1999, pp. 267-278
This paper presents application of a conductive polymer to a self-absorbing
pyroelectric sensor. The pyroelectric sensor is a free standing thermal in
frared detector. It consists of a conductive polymer (PEDT/PSS) as an absor
ber layer and front electrode, a PVDF film as the pyroelectric material and
a Ni-Al metal film as a reflector layer and rear electrode. Theoretical an
alysis of the infra red absorptivity of this structure shows that a selecti
ve, self-absorbing pyroelectric sensor with an absorptance of up to 90% is
feasible. The conductive polymer, PEDT/PSS with added organic binders, is c
oated on PVDF film using both spin-coating and solution-casting techniques.
The deposition technology of the conductive polymer is shown to be a non-c
ritical process with a high reproducibility and compatible with PVDF film.
The measured response of this PVDF pyroelectric sensor is shown to be 10 ti
mes higher than that of a commercially available PVDF film with thin nickel
aluminium front and back electrodes. (C) 1999 Elsevier Science B.V. All ri
ghts reserved.