Patent ID: 9269883
Filing Date: 2016-02-23
CPC Classification: H01L

Claim Text:
1. A thermoelectric conversion device, comprising: a substrate; a stack in which a first perovskite dielectric film, which includes Sr and Ti and has a first bandgap, and a second perovskite dielectric film, which includes Sr and Ti and has a second bandgap smaller than the first bandgap, are stacked alternately, the stack being formed over the substrate; a first electrode in electrical connection to a top end of the stack; and a second electrode in electrical connection to a bottom end of the stack, each of the first and second perovskite dielectric films being doped to have an electric conductivity, the first and the second perovskite dielectric films having respective compositions such that there appears a bandoffset of 0.54 eV in maximum between a conduction band of the first perovskite dielectric film and a conduction band of the second perovskite dielectric film, there being induced an electromotive force between the top end and the bottom end of the stack when the top end of the stack is exposed to a first temperature and the bottom end of the stack is exposed to a second temperature.