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Preparation of PCLT/P(VDF-TrFE) pyroelectric sensor based on plastic film substrate
Preparation of PCLT/P(VDF-TrFE) pyroelectric sensor based on plastic film substrate
- Source :
- Sensors and Actuators A: Physical. 100:231-235
- Publication Year :
- 2002
- Publisher :
- Elsevier BV, 2002.
-
Abstract
- Nanosized lead titanate doped with calcium and lanthanum (PCLT) powder obtained by the sol–gel method was homogeneously mixed with vinylidene fluoride-trifluoroethylene [P(VDF-TrFE)]. The nanocomposite PCLT/P(VDF-TrFE) film was used as the sensing film for pyroelectric sensors, whose detective merit was about 22.4% higher than that of sensors using pure P(VDF-TrFE). A 35 nm ITO film was deposited as the bottom electrode on PET plastic film substrate, on which PCLT/P(VDF-TrFE) was prepared by spin-coating, and Ni–Cr film was chosen as the upper electrode. The PET plastic film substrate could effectively decrease the thermal conductivity of the element and the ITO bottom electrode could reflect the infrared irradiation. The voltage responsivity was increased and the thermal fluctuation noise of the pyroelectric element was decreased significantly. The experimental results indicated that the specific detectivity of PCLT/P(VDF-TrFE) pyroelectric sensors based on PET film substrate reached 3.4E7 cm Hz 1/2 W −1 , more than two orders of magnitude higher than that of the sensors on bulk silicon substrate formed under the same conditions.
- Subjects :
- Materials science
Silicon
Metals and Alloys
Mineralogy
chemistry.chemical_element
Substrate (electronics)
Specific detectivity
Condensed Matter Physics
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Pyroelectricity
chemistry.chemical_compound
chemistry
Electrode
Lead titanate
Electrical and Electronic Engineering
Composite material
Thin film
Instrumentation
Sol-gel
Subjects
Details
- ISSN :
- 09244247
- Volume :
- 100
- Database :
- OpenAIRE
- Journal :
- Sensors and Actuators A: Physical
- Accession number :
- edsair.doi...........25857e6730e795a669c56e2a7f924641
- Full Text :
- https://doi.org/10.1016/s0924-4247(02)00127-9