摘要:
A thermoelectric sensor device is disclosed consisting of polysilicon, titanium or AlSiCu as the thermocouple of material for thermoelectric sensor device. The features of the present process are: Selecting a material such as aluminum, titanium, aluminum alloy or titanium alloy with lower thermal conductivity coefficient as thermocouple element line and making use of zigzag structure with thermocouple element line, and increasing the length of thermocouple element line. Employing front side Si bulk etching technique to etch the silicon substrate, which is under the device and empty of silicon substrate, so as to reduce the superficial measure of thermoelectric sensor module and increase the throughout of the silicon wafer. Simultaneously, fabricating a resistor to treat as a heater on the membrane for adjusting the device.
摘要:
A thermoelectric module 1 comprising p-type thermoelectric elements 3a and n-type thermoelectric elements 3b which are alternately arranged and electrically connected by electrodes 4 provided on the top side and the bottom side of each thermoelectric element 3 and a heat exchanger plate 5 which is fixed on the electrodes on each side, in which each thermoelectric element 3 has a coating film 2 of an insulating material on the sides thereof except the sides joined to the electrodes 4, and the thermoelectric elements 3 are spaced apart. The coating film 2 improves the strength and moisture resistance of the thermoelectric elements 3 to prevent thermoelectric elements from cracking or breaking even in cases where a load, a shock, or a thermal stress is imposed thereon and to protect the thermoelectric elements against corrosion in a high humidity atmosphere, providing a thermoelectric module 1 with improved operational reliability.
摘要:
A thermoelectric material is disclosed that is manufactured from a method including the steps of: providing a Group IV element boride, and doping the Group IV element boride with a doping element chosen from one of the column III, IV, V elements, wherein the doping element is different from the Group IV element in the Group IV element boride, and the doping element is not boron. An alternate method of fabricating a thermoelectric material includes the steps of simultaneously growing on a substrate a Group IV element boride and at least one doping element chosen from one of the Group III, IV, or V elements wherein the doping element is different than the Group IV element in the Group IV element boride and the doping element is not boron.
摘要:
A thermoelectric module including a couple formed between two bismuth telluride thermoelectrodes. The first thermoelectrode is doped with palladium, selenium, or a combination of the two. The second thermoelectrode is doped with antimony, gold, or a combination of the two. Multiple thermoelectric modules may be used in series and parallel to achieve the desired voltage and current outputs.
摘要:
The invention provides a method of fabricating a thermoelectric device, whereby a grooved block composed of n-type thermoelectric semiconductor and a grooved block composed of p-type thermoelectric semiconductor, provided with a plurality of grooves formed therein, respectively, at a same pitch and parallel with each other, are formed such that a depthwise portion of respective grooved blocks is left intact, and then, an integrated block is formed by fitting and adhering together the grooved blocks composed of the n-type and p-type thermoelectric semiconductors, respectively, filling up gaps in fitting parts with adhesive insulation members. After removing portions of the integrated block, other than the fitting parts where the n-type and p-type thermoelectric semiconductors are fitted to each other, n-type and p-type thermoelectric semiconductor pieces are exposed, and by forming electrodes for connecting the pieces to each other alternately and in series, the thermoelectric device is completed.
摘要:
A process for producing a thermoelectric material comprising mixing at least two of bismuth, tellurium, selenium, and antimony and, if desired, a dopant, melting the mixture, grinding the resulting alloy ingot, forming the powder, and sintering the green body under normal pressure, or hot pressing the powder, wherein the grinding and the normal sintering or hot pressing are carried out in the presence of a solvent represented by CnH2n+1OH or CnH2n+2CO (wherein n is 1, 2 or 3).
摘要:
A heterostructure thermionic cooler and a method for making thermionic coolers, employing a barrier layer of varying conduction bandedge for n-type material, or varying valence bandedge for p-type material, that is placed between two layers of material. The barrier layer bandedge is at least kBT higher than the Fermi level of the semiconductor layer, which allows only selected, “hot” electrons, or electrons of high enough energy, across the barrier. The barrier layer is constructed to have an internal electric field such that the electrons that make it over the initial barrier are assisted in travel to the anode. Once electrons drop to the energy level of the anode, they lose energy to the lattice, thus heating the lattice at the anode. The barrier height of the barrier layer is high enough to prevent the electrons from traveling in the reverse direction.
摘要:
The present invention allows optimum filling of void spaces typically found in skutterudite type crystal lattice structures associated with various semiconductor materials. Selective filling provides semiconductor materials which are particularly beneficial for use in fabricating thermoelectric devices for electrical power generation and/or cooling applications. By selectively filling a portion of the void spaces associated with skutterudite type crystal lattice structure, reductions in thermal conductivity of the resulting semiconducting material may be optimized while concurrently minimizing any reduction in electrical properties of the resulting semiconductor materials, thus maximizing the thermoelectric figure of merit for the associated thermoelectric device. The present invention allows optimizing both the size and type of atoms and/or molecules used to fill void spaces in skutterudite type crystal lattice structure and to optimize the number of void spaces which are filled by such atoms and/or molecules.
摘要:
A class of thermoelectric compounds based on the skutterudite structure with heavy filling atoms in the empty octants and substituting transition metals and main-group atoms. High Seebeck coefficients and low thermal conductivities are achieved in combination with large electrical conductivities in these filled skutterudites for large ZT values. Substituting and filling methods are disclosed to synthesize skutterudite compositions with desired thermoelectric properties. A melting and/or sintering process in combination with powder metallurgy techniques is used to fabricate these new materials.
摘要:
A method for forming thermal isolation for a micro thermopile device comprises steps of forming a narrow etching window on the membrane and forming a plurality of micro connection structures each crossing the narrow etching window and connecting the edge portion of the membrane on both sides of the narrow etching window, and etching the silicon substrate through the narrow etching window to form a pit between the silicon substrate and the membrane, whereby the membrane becomes a floating membrane and has thermal isolation with the silicon substrate. By this method, the area of the floating membrane is increased and the strain of the floating membrane is reduced.