We report thermal to electrical energy conversion from a 150 nm thick BaTiO 3 film using
pyroelectric cycles at 1 kHz. A microfabricated platform enables temperature and electric
field control with temporal resolution near 1 μs. The rapid electric field changes as high as
11× 10 5 kV/cm-s, and temperature change rates as high as 6× 10 5 K/s allow exploration of
pyroelectric cycles in a previously unexplored operating regime. We investigated the effect
of phase difference between electric field and temperature cycles, and electric field and …