The present disclosure relates to a photovoltaic (PV) device that includes a first junction constructed with a first alloy and having a bandgap between about 1.0 eV and about 1.5 eV, and a second junction constructed with a second alloy and having a bandgap between about 0.9 eV and about 1.3 eV, where the first alloy includes III-V elements, the second alloy includes III-V elements, and the PV device is configured to operate in a thermophotovoltaic system having an operating temperature between about 1500° C. and about 3000° C.

The present disclosure relates to a photovoltaic (PV) device that includes a first junction constructed with a first alloy and having a bandgap between about 1.0 eV and about 1.5 eV, and a second junction constructed with a second alloy and having a bandgap between about 0.9 eV and about 1.3 eV, where the first alloy includes III-V elements, the second alloy includes III-V elements, and the PV device is configured to operate in a thermophotovoltaic system having an operating temperature between about 1500° C. and about 3000° C.

According to one embodiment, a power generation element includes a first conductive region including a first surface, a plurality of second conductive regions, and a plurality of insulating structure regions. The second conductive regions are arranged along the first surface. A gap is provided between the second conductive regions and the first surface. One of the structure regions is provided between one of the second conductive regions and the first surface. An other one of the structure regions is provided between an other one of the second conductive regions and the first surface.

According to one embodiment, a power generation element includes a first conductive region including a first surface, a plurality of second conductive regions, and a plurality of insulating structure regions. The second conductive regions are arranged along the first surface. A gap is provided between the second conductive regions and the first surface. One of the structure regions is provided between one of the second conductive regions and the first surface. An other one of the structure regions is provided between an other one of the second conductive regions and the first surface.

The present invention relates to a close-contacting module capable of bringing a solar photovoltaic panel and a thermal collector of a solar photovoltaic-thermal panel into close contact without creating an interface. The close-contacting module comprises: a plurality of elastic members (36) which provide an elastic force that presses the thermal collector (20) toward the solar photovoltaic panel (10) from the backside of the thermal collector (20); a support member (35) for supporting the elastic members (36); and a pair of clips (31, 32, 33) provided at both ends of the support member (35) to fix the support member (35) to the edges of the solar photovoltaic-thermal panel (1).

Disclosed are a wireless device capable of being self-powered and an operating method thereof. The wireless device includes an energy harvesting module that generates electrical energy based on energy supplied from an outside, a power management module that generates a voltage based on the electrical energy provided from the energy harvesting module, a user input interface that includes at least one input device sensing an input of a user, and a communication module that transfers a command corresponding to the at least one input device to the outside based on the voltage provided from the power management module, in response to that the at least one input device is accessed by the user.

Disclosed are a wireless device capable of being self-powered and an operating method thereof. The wireless device includes an energy harvesting module that generates electrical energy based on energy supplied from an outside, a power management module that generates a voltage based on the electrical energy provided from the energy harvesting module, a user input interface that includes at least one input device sensing an input of a user, and a communication module that transfers a command corresponding to the at least one input device to the outside based on the voltage provided from the power management module, in response to that the at least one input device is accessed by the user.

A thermophotovoltaic generator incorporating a two-stage combustor for providing heat to a thermophotovoltaic cell. Combustor parts include a partial oxidation reactor, which functions catalytically to convert a hydrocarbon fuel and a first supply of an oxidant into a gaseous partial oxidation product; and further include downstream thereof, a deep oxidation reactor including a premixer plenum fluidly connected to a heat spreader comprising a porous matrix, such as a ceramic foam. Functionally, the deep oxidation reactor converts the gaseous partial oxidation product and a second supply of oxidant into complete combustion products. Heat produced by the two-stage combustor generates radiative energy from a photon emitter, which is directly converted to electricity in a photovoltaic diode cell.

A thermophotovoltaic generator incorporating a two-stage combustor for providing heat to a thermophotovoltaic cell. Combustor parts include a partial oxidation reactor, which functions catalytically to convert a hydrocarbon fuel and a first supply of an oxidant into a gaseous partial oxidation product; and further include downstream thereof, a deep oxidation reactor including a premixer plenum fluidly connected to a heat spreader comprising a porous matrix, such as a ceramic foam. Functionally, the deep oxidation reactor converts the gaseous partial oxidation product and a second supply of oxidant into complete combustion products. Heat produced by the two-stage combustor generates radiative energy from a photon emitter, which is directly converted to electricity in a photovoltaic diode cell.

The present invention relates to a close-contacting module capable of bringing a solar photovoltaic panel and a thermal collector of a solar photovoltaic-thermal panel into close contact without creating an interface. The close-contacting module comprises: a plurality of elastic members (36) which provide an elastic force that presses the thermal collector (20) toward the solar photovoltaic panel (10) from the backside of the thermal collector (20); a support member (35) for supporting the elastic members (36); and a pair of clips (31, 32, 33) provided at both ends of the support member (35) to fix the support member (35) to the edges of the solar photovoltaic-thermal panel (1).