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Novel UV line beam system for large area processing with 248 nm

: Trenn, Matthias; Delmdahl, Ralph; Sperling, Patrick


Hahlweg, C.F. ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
Novel Optical Systems, Methods, and Applications XXII : 13-14 August 2019, San Diego, California
Bellingham, WA: SPIE, 2019 (Proceedings of SPIE 11105)
ISBN: 978-1-5106-2903-5
ISBN: 978-1-5106-2904-2
Paper 1110502, 7 pp.
Conference "Novel Optical Systems, Methods, and Applications" <22, 2019, San Diego/Calif.>
Conference Paper
Fraunhofer ILT ()
excimer laser; line-beam; large-area processing; laser-induced modification; graphene oxide

In large-scale production, reducing the processing time while maintaining high precision is of crucial importance in order to reduce production cost and guarantee high quality. To achieve this aim, a line beam system combined with a 150 Wexcimer laser is introduced. UV excimer laser radiation has proven itself for precise structuring and modifying of microand nanometer-scale layers. With a wavelength of 248 nm, materials can be selectively modified with a depth resolution below 0.1 micrometers. Due to the latest technical development, high power excimer laser bridges the gap between high precision and cost-efficient processing. The linear beam concept dispenses with movable components such as scanner optics. By using a fixed line beam with ns pulse duration, a system with optimum reproducibility has been created. The functionality of the novel line beam system and the attainable layer quality are evaluated individually and form the basis for rapidly implementing the UV system in industrial applications. One application example presented in this paper is the reduction of graphene oxide for waferscale fabrication of reduced graphene oxide.