Patent ID: 9349891
Filing Date: 2016-05-24
CPC Classification: H02S,Y02E

Claim Text:
1. A sub-micron gap thermophotovoltaic structure for generating electrical power, comprising: an infrared radiation-emitting substrate having an external surface for receiving energy from a heat source and an opposing infrared radiation-emitting internal surface juxtaposed from a first surface of a radiation-transparent window substrate by an evacuated sub-micron gap; a radiation-transparent window substrate second surface opposing the radiation-transparent window substrate first surface, the radiation-transparent window substrate second surface adjoined to a first surface of one or more photovoltaic cell substrates by an adhesion layer having a refractive index greater than 1.4 and high transmissivity for infrared radiation; and the radiation-transparent window substrate having a high refractive index that is equal to or greater than the refractive index of the infrared radiation-emitting substrate and the one or more photovoltaic cell substrates for improved collection and transmission of infrared energy from the infrared radiation-emitting internal surface of the infrared radiation-emitting substrate to the one or more photovoltaic cell substrates.