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Method for metalizing solar cells, hot-melt aerosol ink, and aerosol jet printing system

A solar cell and aerosol technology, applied in electrical components, inks, circuits, etc., can solve problems such as hindering the industrial application of printing methods, increasing safety risks, and short cycle times.

Inactive Publication Date: 2010-12-15
FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such high substrate temperatures have hitherto made the industrial application of the printing method difficult or hindered because of the shorter cycle times compared to the case of printing at room temperature
Additionally, the combination of solvents and high temperatures often presents a greater safety risk

Method used

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  • Method for metalizing solar cells, hot-melt aerosol ink, and aerosol jet printing system
  • Method for metalizing solar cells, hot-melt aerosol ink, and aerosol jet printing system
  • Method for metalizing solar cells, hot-melt aerosol ink, and aerosol jet printing system

Examples

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Embodiment Construction

[0049] figure 1 A prior art aerosol jet printing device 1 is shown in which the atomizer 2 is operated with atomizing gas. The aerosol generated in the dummy impactor 3 is ejected through the nozzles 5 in the direction of the bottom 6 of the heated substrate via the printing head 4 , with additional addition of focusing gas. At this time, 7 represents the XY platform. However, only imperfect results can be achieved with this approach. The temperature of the substrate 6 is generally equal to 150°C.

[0050] Only a small application height of about 2 μm ( figure 2 ) and poor aspect ratio <1:10 because of ink bleeding.

[0051] image 3 The structure of an aerosol jet printing device 9 according to the invention is schematically shown, with reference to which the method according to the invention will now be described in more detail. The atomizer 10 described here is heated and supplies an aerosol jet ink according to the present invention. The atomizing gas introduced in...

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PUM

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Abstract

The present invention relates to a novel method for applying conductive structures to solar cells, wherein at least one aerosol jet printing system atomizes a hot-melt aerosol ink and expresses said ink from the printing system in the direction of the solar cell, wherein the printing system is at least partially heated in order to keep the viscosity of the ink used at a low level. Upon impacting the non-heated substrate (solar cell), the ink hardens.

Description

technical field [0001] The invention relates to a new method for applying conductive structures on solar cells, in which a hot melt aerosol ink is sprayed in a mist by means of an aerosol jet printing system and sprayed from the printing system in the direction of the solar cells out, wherein the printing system is at least partially heated in order to keep the viscosity of the ink used low. When the ink contacts the unheated substrate (solar cell), the ink condenses. Background technique [0002] For the conductive contacts on the solar cell, in particular the front-side contacts, it is desirable to keep the contact area as small as possible while at the same time maintaining a high conductivity of the contact grid. A small contact area avoids too large a shadow and reduces carrier recombination. The good electrical conductivity of the contact grid reduces electrical losses. The printed contacts are not only made as small as possible, but also as high as possible. The r...

Claims

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Application Information

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IPC IPC(8): H01L31/0224C09D11/00
CPCC09D11/34H01L31/022425Y02E10/50C09D11/52
Inventor 马蒂亚斯·霍特斯菲利普·里克特斯特凡·格伦茨
Owner FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV