Nature of injection processes during poling of poly(vinylidene fluoride) and their relationship to pyroelectricity

By analysis of steady-state current-time-voltage-temperature relationships, it is concluded that a Richardson-Schottky process is dominant at the high fields and temperatures typically employed in poling poly(vinylidene fluoride) to impart pyroelectric and piezoelectric properties. Data on pyroelectric behavior with different layer configurations and with different electrode configurations indicate the primary importance of hole injection.