Award for new solar cell technology with Jenoptik laser
The Fraunhofer Institute for Solar Energy Systems, ISE, has been honored with the Innovation Award Laser Technology 2014. The laser used in this technology was provided by the Jenoptik Lasers & Material Processing division.
When developing this LFC technology for the laser-based rear side contacting of solar cells, the ISE used Jenoptik’s disk laser JenLas® disk IR70. With this laser, it is possible to make up to 25,000 contacts per second. Other fields of application for this laser in the photovoltaic industry are metal wrap through (MWT), emitter wrap through (EWT) and laser edge isolation (LEI).
The infrared disk laser is part of the JenLas® disk IR product line which enables the user to flexibly optimize process parameters. For example, the laser pulse length can be adjusted independently of repetition frequency and laser power. With a laser power of up to 65 W, a pulse energy of up to 7.0 mJ and repetition frequencies of up to 300 kHz, these lasers can be used for a wide range of applications.
In addition to their use in the photovoltaic industry, lasers of the type JenLas® disk IR are also perfectly suitable for machining hard and brittle materials such as diamond, silicon carbide or titanium alloys. Due to the high pulse energy, the laser can be used to remove and drill carbon fiber-reinforced plastics as well. Moreover, the disk technology makes the laser insensitive to back reflections and, thus, makes it the ideal tool for processing highly reflective materials such as copper or aluminum.
About the Jenoptik Lasers & Material Processing divisionWith its Lasers & Material Processing division, Jenoptik is one of the leading providers of laser technology and provides products and solutions along the entire value-added chain of laser material processing – from components up to complete laser systems. In the Lasers business unit, the company has specialized in high-quality semiconductor lasers, reliable diode lasers as modules or systems as well as innovative solid-state lasers such as disk and fiber lasers. This product portfolio makes Jenoptik the ideal partner for the entire pulse width range, from cw to fs. In the field of high-power diode lasers, the company is acknowledged as a worldwide quality leader.
In the Laser Processing Systems business unit, Jenoptik develops and manufactures laser machines which are integrated into its customers’ production lines as a part of their process optimization and automation. They serve for the processing of plastics and metals. Jenoptik laser systems ensure processing at maximum efficiency, precision and safety. In addition, customers can try out various laser sources and machines at the Application Centers, thus finding the optimal solution for their application. The product portfolio is rounded off with energy-efficient and environmentally friendly exhaust cleaning systems for residue-free removal of pollutants during laser processing and other industrial processes.