Metallization is an important process sequence in solar cell manufacturing that not only in uences cell performance, but also manufacturing costs. Often metallization is also one important production step that requires adaptation when moving to new cell architectures. While several technologies have been developed for cell metallization, screen printing has remained the only game in town for this purpose.
For our first market survey on screen printers, 5 companies have responded to our enquiry and provided data for 7 products.
- ASYS Group, Germany
- Baccini Cell Systems, a division of Applied Materials, USA
- Formula E s.r. l., Italy
- JRT Photovoltaics GmbH & Co. KG, Germany
- Micro-tec Co., Ltd., Japan
Regarding tools, manufacturers have been primarily focusing on throughput. The products listed in our survey can process between 1,600 and 5,200 wafers per hour. Regarding process, reducing screen opening and thus the nger width, as well as paste laydown are the hottest topics. Finger dimensions in mass production are now between 45 and 50 μm with an aspect ratio ranging from 0.2 to 0.5 and realized with 28 to 35 μm screen openings. Paste consumption ranges between 90 to 100 mg on the front side.
Screen printers market survey in detail:
After an introduction (1), an overview (2), and providing the latest on advanced metallization concepts, such as double printing, dual printing, stencil screens, knotless screen and other developments (3), the market survey includes product descriptions for the different devices listed (4), a chapter on advanced printing technologies – including rotary screen printing, flexographic printing and parallel dispensing (5). A conclusions chapter analyses the survey content (6), followed by a table with detailed product specifications (7).
The TaiyangNews Market Survey on Screen Printers 2018 is for download free of charge here.