Accession Number : ADD002198

Title :   Method of Producing Current with Ceramic Ferroelectric Device.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON D C

Personal Author(s) : Brody,Philip S

Report Date : 17 Dec 1974

Pagination or Media Count : 7

Abstract : The patent relates to a device which consists of a wafer of polycrystalline perovskite oxide ceramic such as barium titanate, lead titanate - lead zirconate, or lead titanate-lead zirconate with 7.5% or less of the lead substituted for by lanthanum. Electrical terminals are joined to the wafer edges. When the ceramic is exposed to visible radiation such as sunlight a high voltage appears across the terminals and an electrical current flows through a load resistance connected between said terminals. The voltage across the load resistance depends upon the length of the wafer between the two terminals and the magnitude of the load resistance. Voltages of at least 500 volts per inch are produced for high values of load resistance.

Descriptors :   *Electric generators, *Patents, Photoelectric materials, Ferroelectric crystals, Solid state electronics, Ceramic materials, High voltage, Barium titanates, Lead compounds, Titanates, Zirconates

Subject Categories : Electric Power Production and Distribution

Distribution Statement : APPROVED FOR PUBLIC RELEASE