Tiếng Việt

Fraunhofer ISE develops a faster laser system for wafer processing

1048
2023-12-23 14:00:27
Xem bản dịch

By using a new type of laser, the processing speed of wafers can be 10 to 20 times faster than before. This is the result of a research project at the Fraunhofer Institute for Solar Systems in Germany.

Researchers have developed a prototype that can use ultraviolet waves to carve the most intricate structures on silicon wafers. The new system concept enables solar cell manufacturers to perform laser processing at the highest speed without compromising on the size of the structure or processing field.

In order to produce photovoltaic cells from wafers, wafers must be metallized. In this step, the fine channels are grooved at the top of the cell. Silver paste enters the channel and is then used as a conductor track. The speed at which the channel enters the silicon wafer is crucial for battery production to further reduce production costs.

The laser provided by Fraunhofer ISE can draw 1800 lines per second. This is 10 to 20 times faster than so-called galvanometer scanners, which are typically used for this purpose. The laser has a high repetition rate of 10 megahertz and a maximum pulse energy of 5.6 microjoules.

This laser can also process M12 format wafers with a side length of 210 millimeters. The laser engraving channel is only 15 microns wide. This is 30% finer than the currently commercially used ultraviolet laser. Compared to the very common infrared laser, the channel of the new laser is three times larger. A finer channel can reduce the use of silver paste, thereby helping to further reduce production costs.

"The unique feature of the demonstrator design is that large workpieces can be processed very quickly and the structural dimensions are small," said Jale Schneider, project manager at Fraunhofer ISE. The idea that you can only have two of these three characteristics at the same time - large image field, rapid processing, and fine structure - is deeply rooted in the laser material processing industry. With this system, we have achieved these three aspirations simultaneously.

German laser expert Edgewave GmbH has developed a prototype. Moewe Optical Solutions built a polygon scanner for this project. At Fraunhofer ISE, the team combined a polygonal scanner, laser, and axis for beam guidance into a system. The group now hopes to research new processes to increase production.

Source: Laser Net

Đề xuất liên quan
  • Scientists develop photo activated glass for clean energy production

    Japanese and Swiss scientists have collaborated to develop glass that can generate electricity under light, which may pave the way for sustainable energy production. Researchers from Tokyo Institute of Technology and the Swiss Federal Institute of Technology in Lausanne used femtosecond lasers to etch circuits on glass surfaces, resulting in the unexpected generation of semiconductor crystals.The ...

    2024-03-11
    Xem bản dịch
  • Yangtze Welcomes 8th Overseas Production Site

    On August 8, local time, Jalisco, Mexico welcomed the grand opening of Yangtze Optics Mexico Cable S.A. de C.V., marking the eighth overseas production base of Yangtze Optical Fiber & Cable Co. ("Yangtze Fiber Optics") has successfully set up its eighth overseas production base in its 36-year development history, further advancing its internationalization strategy blueprint. Today, we are pr...

    2024-08-14
    Xem bản dịch
  • This perovskite solar cell laser equipment company has received another round of financing

    Recently, Lecheng Intelligent Technology (Suzhou) Co., Ltd. (hereinafter referred to as "Lecheng Intelligent") completed a strategic financing round of tens of millions of yuan, which is exclusively invested by Dongfang Fenghai Capital. The financing funds will mainly be used for technology research and development, laboratory construction, and talent recruitment.This is the second round of financ...

    2023-10-10
    Xem bản dịch
  • Han's Laser's net profit in the third quarter decreased by 45.37% year-on-year

    Recently, Han's Laser released a third quarter report, stating that the company achieved a revenue of 3.301 billion yuan in the third quarter, a year-on-year decrease of 8.96% (after adjustment); The net profit attributable to shareholders of the listed company was 209 million yuan, a year-on-year decrease of 45.37% (after adjustment).During the reporting period, the company's operating profit, to...

    2023-10-25
    Xem bản dịch
  • Changchun Institute of Optics and Mechanics has developed blue-green fluorescent transparent ceramics for laser lighting, laying a key fluorescence material foundation for full color laser lighting

    The project of the National Natural Science Foundation of China (Jilin Province) "Multicolor Transparent Silicate Garnet Fluorescent Ceramics for Laser Lighting" presided over by Zhang Jiahua, a researcher in the State Key Laboratory of Luminescence and Applications of Changchun Institute of Optics and Fine Mechanics, has made breakthrough progress, developed green fluorescent transparent ceramics...

    2023-09-26
    Xem bản dịch