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Method for producing thermoelectric layers

A technology of thermoelectric layer and thermoelectric material, which is applied in the manufacture/processing of thermoelectric devices, the material and coating of thermoelectric device junction leads, etc. Effects of improved properties, improved thermoelectric properties, and improved electrical and thermal conductivity

Inactive Publication Date: 2015-01-14
MAHLE INT GMBH
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  • Abstract
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Problems solved by technology

However, thin layers have the disadvantage that thermoelectric generators produced from such thin layers cannot output very high power because the current is limited by the thin layers

Method used

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  • Method for producing thermoelectric layers
  • Method for producing thermoelectric layers
  • Method for producing thermoelectric layers

Examples

Experimental program
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Embodiment Construction

[0055] figure 1 A) shows bismuth telluride Bi as the first raw material (1) 2 Te 3 and antimony telluride Sb as the second raw material (2) 2 Te 3 . To fabricate a target (3) made of thermoelectric material, the two raw materials (1, 2) were mixed with 25 mol-% bismuth antimonide Bi 2 Te 3 and 75mol-% antimony telluride Sb 2 Te 3 The composition of is fed into the ball mill (4), and in the ball mill (4), the two raw materials (1, 2) in the ball mill are ground. Through mechanical alloying, the raw materials (1, 2) are obtained in the form of pellets, which can be processed from figure 1 Layered structure seen on the right half of B), these agglomerates were formed during mechanical alloying in the ball mill (4).

[0056] Next, the raw materials (1, 2) alloyed by grinding (as in figure 1 C)) is fed to the sintering process. For this, the alloyed raw materials (1, 2) are compacted into the structure (5) and hardened below the melting temperature of the alloyed raw ...

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Abstract

The invention relates to a method for producing thermoelectric layers by depositing thermoelectric material on a substrate by means of sputter deposition. In order to create a method for producing thermoelectric layers that are better suited for use in thermogenerators, and in particular have higher Seebeck coefficients, the production of a target made of thermoelectric material is proposed by mixing at least two powdered starting materials having a particle size from 0.01 μm-5000 μm, while coupling in energy and depositing the thermoelectric material from the target on the substrate by way of magnetron sputter deposition.

Description

technical field [0001] The invention relates to a method for producing a thermoelectric layer by depositing a thermoelectric material on a substrate by sputter deposition. Background technique [0002] In order to exploit pyroelectricity, thermoelectric layers with different thermoelectric materials are required. The thermoelectric effect, also known as the Seebeck effect, describes the reversible energy conversion between temperature and electricity. The Seebeck voltage is determined by: [0003] u Seebeck =α×δT [0004] in: [0005] δT is the temperature difference between the hot side and the cold side [0006] α: Seebeck coefficient or thermal electromotive force [0007] The Seebeck coefficient has a dimension of voltage per unit temperature difference (V / K). The magnitude of the Seebeck coefficient is decisive for the Seebeck voltage. [0008] A thermocouple with two different metals connected to each other at one end converts thermal energy into electrical ene...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C14/34C23C14/06H01L35/16H01L35/22H10N10/01H10N10/852H10N10/855
CPCH01L35/22C23C14/3414H01L35/34C23C14/0682H01L35/16C23C14/0623H01J37/3426H10N10/855H10N10/852H10N10/01H10N10/8556
Inventor 拉尔夫·托伊尼森格哈德·斯潘
Owner MAHLE INT GMBH
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