Patent ID: 9530630
Filing Date: 2016-12-27
CPC Classification: H01J,Y02E

Claim Text:
1. A thermionic power generator comprising: an emitter including an emitter substrate having an electric conductivity, a low resistance layer stacked to the emitter substrate and made of an n-type diamond semiconductor that includes phosphorus as a donor, and an electron emission layer stacked to the low resistance layer and made of an n-type diamond semiconductor that includes nitrogen as a donor, the emitter generating thermions; and a collector including a collector substrate having an electric conductivity, the collector disposed opposite to the emitter via a clearance and collecting the thermions, wherein the electron emission layer has a thickness equal to or less than 40 nm, the emitter further includes an interface intermediate layer disposed between the emitter substrate and the low resistance layer, and the interface intermediate layer is configured so that a sum of a resistance in a thickness direction of the interface intermediate layer, an interface resistance with the emitter substrate, and an interface resistance with the low resistance layer is smaller than an interface resistance between the emitter substrate and the low resistance layer.