Electrical Properties of Ferroelectric Lead Lanthanum Zirconate Titanate as an Energy Transducer for Application to Electrostatic-Optical Motor

An electrostatic-optical motor has been proposed as a new application device using lead lanthanum zirconate titanate (PLZT) as an energy transducer from optical energy to electrical energy. Photovoltaic electrical power output of the PLZT is transformed into electrostatic force for actuation of the rotation of the optical motor. Electrical conductivity including dark conductivity and photovoltaic conductivity plays an essential role in mechanisms of the photovoltaic effect. An electrical property of photovoltaic PLZT is examined quantitatively. Uniform illumination is realized with the homogeneous irradiation lens. As a result, it becomes possible to realize uniform illumination one order stronger than previously reported. Authors confirm that there is a linear relationship between electrical conductivity and light intensity in this experiment. 18 refs.