Pyroelectric response of spray-deposited BaTiO3 thin film

Robert E. Peale; Isaiah O. Oladeji; Evan M. Smith; Vladimir Vasilyev; Sarmad Fawzi Hamza Alhasan; Hussain Abouelkhair; Dalibor Todorovski; Martin Kimani; Justin W. Cleary

doi:10.1117/12.2237458

26 September 2016 Pyroelectric response of spray-deposited BaTiO₃ thin film

Robert E. Peale, Isaiah O. Oladeji, Evan M. Smith, Vladimir Vasilyev, Sarmad Fawzi Hamza Alhasan, Hussain Abouelkhair, Dalibor Todorovski, Martin Kimani, Justin W. Cleary

Author Affiliations +

Proceedings Volume 9929, Nanostructured Thin Films IX; 99290Z (2016) https://doi.org/10.1117/12.2237458
Event: SPIE Nanoscience + Engineering, 2016, San Diego, California, United States

Abstract

Pyroelectric photoresponse of aqueous spray deposited thin films containing BaTiO₃ nano-crystals is reported. X-ray diffraction data indicate the presence of hexagonal BaTiO₃ nano-crystals with ~20 nm crystalline domains in a matrix of some as yet unidentified nano-crystalline material. When the film is annealed at 600 C, the X-ray pattern changes significantly and indicates a conversion to one of the non-hexagonal phases of BaTiO₃ as well as a complete change in the matrix. With suitable amplifier, the measured photoresponse was 40V/W. Ferroelectric hysteresis on a film with significant presence of hexagonal BaTiO₃ shows saturated polarization which is about 5-times smaller than for the bulk tetragonal phase. A potential application is a patternable infrared detector for photonic and plasmonic devices, such as chip-scale spectral sensors.

Citation Download Citation

Robert E. Peale, Isaiah O. Oladeji, Evan M. Smith, Vladimir Vasilyev, Sarmad Fawzi Hamza Alhasan, Hussain Abouelkhair, Dalibor Todorovski, Martin Kimani, and Justin W. Cleary "Pyroelectric response of spray-deposited BaTiO₃ thin film", Proc. SPIE 9929, Nanostructured Thin Films IX, 99290Z (26 September 2016); https://doi.org/10.1117/12.2237458

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