Jenoptiks infrared disk laser with independently adjustable laser parameters for the photovoltaics
With the consequent further development of the already introduced and proven infrared disk lasers of the JenLas disk family, Jenoptik now adds to that product range the new laser sources JenLas disk IR50E and JenLas disk IR70E with optimized, independently adjustable laser parameters for the photovoltaics sector.
Those E-version lasers (E = extended) achieve shorter pulse lengths, significantly higher repetition rates and constantly high pulse energies. Another advantage for the user is that the pulse lengths of the lasers can be adjusted independently of repetition rate and laser power. Standardized interfaces for easy integration and high control flexibility (analog, digital, software) were also an important aspect and have been realized accordingly.
The new JenLas disk IRxxE lasers particularly meet the requirements of the new technologies in the photovoltaics industry such as laser fired contacts (LFC up to 25,000 contacts per second), MWT, EWT as well as LEI.
Femtosecond laser for optimal use in the photovoltaic industry
Another product to be exhibited is the new JenLas D2.fs. Based on the disc laser technology, the laser guarantees an outstanding parameter stability and sets a new standard for laser sources of the femtosecond group. The laser emits high-pulse-energies and can be operated in the high repetition range. The beam quality of M² ? 1.25 coupled with the pulse duration of ? 400 fs allows innovative industrial laser applications in photovoltaics.
To be mentioned is a selective single layer removal in processing of multi-layer systems composed of a variety of materials. The concrete industrial application is the removal of dielectric layers on crystalline solar cells.
Laser processes are making inroads in manufacturing
The number of laser processes leaving the lab environment and entering the production of crystalline solar cells is growing. Laser processes offer an extremely powerful and cost-focused possibility of obtaining cells with distinctly improved efficiency. This is where Jenoptik comes in with a unique holistic solution concept.
By applying the available competencies in optical development and manufacture, technology modules were developed in combination with Jenoptik laser sources that apply laser processes at highest quality and productivity. A very impressive example is provided by the PVSEC 2011 with the technology module for selective emitter doping. This unique processing strategy and the patented optical setup makes the production of 3,600 wafers an hour possible at a single station.
The machine concept JENOPTIK-VOTAN Solas 1800 was developed by Jenoptik for the production of crystalline solar cells. The variable modular design supports the integration of virtually any automation concept and adaptation to the required throughputs. The highest possible utilization of all components ensures the lowest operating costs in the market. This ensures improvement of the production costs in relation with the output of the solar cells.
Serial start for the latest generation of the Solas Multi product series
In recent years, a large number of factories for the production of thin film solar modules has been built on a global scale. The quest for higher module efficiency is never ending. To this end, new, more efficient and more favourably priced production technologies are tried and tested and their impact on the entire production process assessed.
This is particularly the case with laser and structuring processes. As a result of this, the demand for lab-scale and pilot production systems processing thin film solar modules of large format, which can then be used as full-fledged machines in real production environments is growing. The Laser Systems Division of Jenoptik has set itself the task and is presenting at PV SEC 2011 the latest and globally unique machine generation of JENOPTIK-VOTAN Solas Multi.
