SciTransfer
HighLine · Project

High-Speed Precision Printing to Reduce Silver Costs in Solar Cell Manufacturing

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Imagine trying to draw incredibly thin, precise lines of silver on a solar cell using a giant screen, which is wasteful and slow. This technology replaces that old method with a high-tech nozzle that acts like a precision inkjet printer for metal. It uses much less silver and works faster, making solar panels cheaper and more efficient to produce.

By the numbers
25%
silver savings
1%
relative efficiency gain
50%
higher throughput
800 mm/s
printing speed
17 μm
minimum line width
The business problem

What needed solving

Solar cell production relies on an outdated 30-year-old screen-printing method that wastes expensive silver and limits the efficiency of next-generation HJT cells.

The solution

What was built

A Fine Line Parallel Dispensing Printing system using multi-micro-nozzle printheads and integrated software for industrial platforms.

Audience

Who needs this

HJT Solar Cell ManufacturersPV Equipment OEMsSolar Module Assembly PlantsSilver Paste Suppliers
Business applications

Who can put this to work

Solar Photovoltaic Manufacturing
enterprise
Target: Solar cell producers

If you are a solar cell producer dealing with high material costs—this project developed a fine line dispensing process that provides 25% silver savings and a 1% relative efficiency gain. It replaces screen-printing to lower the cost of high-efficiency HJT cells.

Industrial Automation
enterprise
Target: PV equipment manufacturers

If you are an equipment manufacturer dealing with slow production speeds—this project developed a printing technology with 800 mm/s speed that offers 50% higher throughput compared to flatbed screen-printing.

Electronics Assembly
mid-size
Target: Cell interconnection providers

If you are an assembly company dealing with low-temperature cell concepts that cannot use soldering—this project developed a dispensing method for electrically conductive adhesives (ECA) creating homogeneous structures down to 200 μm.

Frequently asked

Quick answers

How does this impact production costs?

It reduces the amount of silver needed by 25%, targeting the second most expensive step in solar cell production.

Is this technology ready for industrial scale?

Yes, the technology has been integrated into Applied Materials' industrial platform and Mondragon Assembly's stringer platforms.

Who owns the intellectual property and how is it licensed?

HighLine Technology GmbH, a Fraunhofer ISE spin-off, holds exclusive IP rights to the metallization process.

How does it improve solar cell performance?

It achieves a 1% relative efficiency gain by reducing shadowing through the use of finer line widths (<17 μm).

What is the timeline for deployment?

The project runs from February 2023 to May 2025, with alpha testing already completed and preparations for beta customers.

Consortium

Who built it

The project is led by a single SME, HighLine Technology GmbH, which is a spin-off from the Fraunhofer Institute for Solar Energy Systems. While the consortium consists of only one partner, the business risk is mitigated by deep industrial integration with two major global players: Applied Materials and Mondragon Assembly.

How to reach the team

Contact HighLine Technology GmbH via their corporate office in Germany.

Next steps

Talk to the team behind this work.

Contact us to facilitate a partnership with HighLine Technology for next-gen PV metallization.