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Selective solar energy absorber and manufacturing method thereof used for solar panels, comprises absorber layer containing mixture layer(s) containing high-refractive index dielectric material, and transparent, low-refractive index dielectric layer on substrate

An absorber, solar energy technology, applied in solar thermal power generation, solar thermal devices, coatings, etc., can solve the problems of long-term process offset and difficult process setting, and achieve the effect of easy process adjustment

Inactive Publication Date: 2014-09-17
VON ARDENNE ANLAGENTECHNIK GMBH
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  • Abstract
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  • Application Information

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Problems solved by technology

Thus, process setup is difficult and processes tend to drift in the long run through interactions

Method used

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  • Selective solar energy absorber and manufacturing method thereof used for solar panels, comprises absorber layer containing mixture layer(s) containing high-refractive index dielectric material, and transparent, low-refractive index dielectric layer on substrate
  • Selective solar energy absorber and manufacturing method thereof used for solar panels, comprises absorber layer containing mixture layer(s) containing high-refractive index dielectric material, and transparent, low-refractive index dielectric layer on substrate
  • Selective solar energy absorber and manufacturing method thereof used for solar panels, comprises absorber layer containing mixture layer(s) containing high-refractive index dielectric material, and transparent, low-refractive index dielectric layer on substrate

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Embodiment Construction

[0049] in accordance with figure 2 In a first example of a solar absorber layer system according to the invention is deposited onto an aluminum substrate 1 .

[0050] An adhesion-increasing layer 7 of aluminum is deposited on the substrate 1 and an absorber layer 2 is deposited on this adhesion-increasing layer, which in this example is constructed in three parts and has a nitrogen An absorbing sublayer 3 of chromium oxide is used as the bottommost sublayer.

[0051] Above the absorbent sublayer 3 is deposited a hybrid layer 4 consisting of the absorbing material of the absorbent sublayer 3 and the transparent material of the dielectric sublayer 5 deposited above the hybrid layer 4, wherein the amount of substance The mixing ratio is 1:1.

[0052] In the sense described above for this material, the dielectric sublayer 5 consists of silicon aluminum nitride. The dielectric sublayer is a layer which is reactively deposited in the presence of nitrogen from a silicon target wh...

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Abstract

The invention relates to a selective solar energy absorber and a manufacturing method thereof. A later system comprises an absorber layer (2) arranged on a substrate (1) and a transparent low-refractive-index dielectric covering layer (6) arranged on the absorber layer (2). The absorber layer is a mixed layer (4) composed of a transparent high-refractive-index dielectric material and an absorbing material. The transparent material contains silicon nitride, silicon aluminum nitride or optically-equivalent aluminum nitride as an essential component. The absorbing material contains nitride of chromium or its alloy, or nitride, oxide or oxynitride of other metal or its alloy as an essential component. The selective solar energy absorber is chromic oxide-free, and compared with the prior art, the selective solar energy absorber is not complex in configuration, so that stable optical properties are achieved throughout the year, the cost of the device is reduced, and with required uniformity being met, the layer system can also be used to manufacture a large-scaled solar panel at low cost.

Description

technical field [0001] The invention relates to a solar absorber layer system with high solar energy absorption and low thermal emissivity, and a method for producing such a layer system on a substrate, wherein at least one layer is deposited by PVD (Physical Vapor Deposition), This is done by passing the substrate through one or more coating sources and at the same time being coated. Background technique [0002] Layer systems of this type are used in solar thermal energy to obtain solar thermal applications by layer systems that act selectively, that is to say in the spectral range of sunlight by absorbing the highest energy irradiation and minimizing the emission of infrared radiation high efficiency. For this purpose, the solar absorber layer system is characterized by strong absorption and very slight reflection (α=1−Re, where α= Absorption coefficient; Re=solar reflection), while strongly increasing for larger wavelengths and high reflection and low energy emission i...

Claims

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Application Information

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IPC IPC(8): F24J2/48B32B9/04B32B33/00
CPCF24J2/48Y02E10/40F24S70/225F24S70/30
Inventor 霍尔格·普勒尔乌韦·马克斯
Owner VON ARDENNE ANLAGENTECHNIK GMBH
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