THICK AND THIN FILMS FOR POWER GENERATION AND COOLING

摘要

We describe a working body of a cooling system which comprises thin or thick electrocaloric films. We also describe a working body of a device for converting heat to electrical power which comprises at least one thick or thin pyroelectric film. In specific embodiments, the thin or thick films are deposited by sol-gel, plasma deposition system, magnetron sputtering system or a chemical vapour deposition system. In specific embodiments, the thin or thick films consist of essentially up to about 20 atomic % Pb, up to about 19 atomic % Zr, up to about 1 atomic % Ti and up to about 60 atomic % O.