Title :
Infrared imaging using uncooled focal plane arrays of unreticulated 10-μm potassium tantalum niobate films
Author :
Mantese, Joseph V. ; Micheli, Adolph L. ; Schubring, Norman W. ; Catalan, Antonio B. ; Soch, Kevin L. ; Ng, Kim ; Klapper, Stuart H. ; Lopez, Richard J. ; Lung, Gerald
Author_Institution :
General Motors Res. Lab., Warren, MI, USA
fDate :
2/1/1993 12:00:00 AM
Abstract :
Potassium tantalum niobate (KTN) films, 10-μm thick, with a nominal Curie temperature of -20°C were formed on polished platinum-coated sacrificial yttria substrates by metalorganic deposition (MOD). These KTN films were used to fabricate focal plane arrays consisting of 128×128 pixels with each pixel on 50-μm centers and 50-μm2. Using f/1 optics and a 2.5-V/μm 2 detector bias, a noise equivalent temperature (NEΔT) of 0.65°C was obtained for the best 1% of the pixels when the detector and blackbody source operated at 25°C
Keywords :
ferroelectric devices; ferroelectric thin films; image sensors; infrared imaging; military equipment; potassium compounds; 128 pixel; 16384 pixel; 25 degC; Curie temperature; IR imaging; KTaO3NbO3; Pt-Y2O3; Y2O3 substrate; metalorganic deposition; military thermal imaging; noise equivalent temperature; uncooled focal plane arrays; Ferroelectric materials; Infrared detectors; Infrared imaging; Niobium compounds; Optical films; Optical imaging; Permittivity; Phase change materials; Sensor arrays; Temperature;
Journal_Title :
Electron Devices, IEEE Transactions on
