Pyroelectric properties of PZT(90/10) thin films on Pt/Si substrates

The pyroelectric properties of PZT(90/10) thin films mere investigated. The films were prepared by metallo-organic spin deposition (MOD) technique on Pt(111)/Si substrates. Dense, (111)-oriented films, similar to 1.0 mu m thick, had a remnant polarization of 13-20 mu C/cm(2) and a coercive field of 10 similar to 30kV/cm. By using static measurement, a pyroelectric coefficient of the order of 10(-8)C/cm(2)K was determined in the temperature range of 25 similar to 140 degrees C, comparable to bulk PZT(90/10) ceramics. Under dynamic pyroelectric measurement conditions, using chopped laser radiation, current and voltage response was detected. Thermal-electric conversion studies indicated significant potential for infrared imaging and energy conversion applications for these PZT films.