Ceramic film, method for manufacturing the same, emitter, and thermophotovoltaic power generation device

Abstract

A ceramic film for a TPV power generation device, the ceramic film having a sufficiently high strength thus making it possible to obtain a desirable radiation spectrum, is provided. A ceramic film (20) according to an example embodiment is a ceramic film that is formed on a base material and has pores, and includes a plurality of high-density regions (1) having a density higher than an average density of the entire ceramic film and a plurality of low-density regions (2) having a density lower than the average density of the entire ceramic film. Further, the high-density regions (1) and the low-density regions (2) are stacked in layers. The ceramic film is composed of an oxide ceramic containing a rare-earth element.

Dependencies are inferred from the claim text.