Laser applications for photovoltaics
For more than two decades, our technological know-how has enabled our customers to reduce manufacturing costs while simultaneously increasing the efficiency of PV modules.
Which laser processes does the Photonics Systems Group supply for the photovoltaic industry?
For over two decades, we have been delivering production solutions for the solar industry to customers worldwide. In addition to high-volume production tools, we offer flexible platforms with multiple laser sources for process development.
In addition to standard processes such as the separation and selective doping of silicon solar cells or laser edge deletion of thin-film solar modules, we are constantly working on new laser-based technologies that could once again revolutionize the solar industry.
DIMENSO
Laser system for processing thin-film solar cells
LUMION
Laser system for processing crystalline solar cells
- Throughput of up to 7,500 wafers/h
- LDSE, LCO, LDC
- Automatic loading and unloading
ULTAGO
Rotary table laser machine for high-percision photovoltaic applications
What Is the purpose of laser applications in photovoltaics?
In the photovoltaic industry, numerous laser processing steps are the industry standard for both the production of silicon-based solar cells and the manufacture of thin-film solar modules. The Photonics Systems Group is an established supplier to many manufacturers worldwide. Our technological know-how is highly valued and has enabled our customers for over two decades to reduce manufacturing costs while simultaneously increasing the efficiency of the modules.
How can we help you?
Rely on our expertise to ensure your long-term success. Get in touch with us now.
Applications of laser processes for the photovoltaic Industry
Cell Cutting / Laser Direct Cleaving (LDC)
The laser process developed by Photonics Systems Group for direct solar cell separation is the most advanced method for cell cutting worldwide. We offer both fully automated stand-alone systems and inline solutions for integration into cell or module production lines.
Laser processes for back-contact solar cells (IBC)
Laser processes for IBC cells require extremely high positioning accuracy of the contact opening structures on the solar cell. Our highly precise image processing technology and patented calibration strategies enable the production of high-performance IBC solar cells in 24/7 operation. Our systems can also be equipped with AOI units, allowing for positioning accuracies of less than 5 µm.
PERC / rear contact opening (LCO)
Our high-speed process for manufacturing rear contact openings enables the processing of cell formats up to M12 / G12. The openings can be customized as line, dash, or dot contacts according to customer requirements. Voltage and fill factor losses are minimized, and an optimized pattern achieves higher cell efficiencies.
LFC (Laser Fired Contacts) for foil metallization
For foil metallization, an aluminum foil is applied to the backside of the solar cells and locally fired into the underlying silicon using a laser, forming a SiAl alloy. The excess foil is then cut away. This process offers a cost-effective alternative to plating or printing techniques on the solar cell backside. The method can also be used for interconnecting shingle cells.
Laser diffusion / laser doping (LDSE)
Our laser process for LDSE (Laser-Doped Selective Emitter) is not limited to specific doping variants. By using a square or rectangular top-hat laser beam profile, homogeneous energy distribution and thus a uniform doping can be achieved. We offer efficient processes for both P-type and N-type cells.
Edge isolation
Edge isolation is a laser process that has been used in the industry for over 20 years. Since then, we have been producing machines that support this process. These machines are known for their high throughput and precision, enabling continuous edge isolation, including the ability to navigate the smallest edge breakouts.
Laser edge deletion
In Laser Edge Deletion, the coating of solar modules is removed at the glass edge to create electrical isolation. This process is critical for preventing voltage breakdowns of several thousand volts to the module frame. Our systems are capable of removing the edge coating of nearly three-square-meter modules within 10 seconds.
State-of-the-art application center
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