Xanthine – A promising organic material for the development of nanostructured anti-reflective layers
Gärtner A, Seifert T, Rickelt F, Schulz U, Tünnermann A (2021)
Publication Type: Conference contribution
Publication year: 2021
Journal
Publisher: SPIE
Book Volume: 11872
Conference Proceedings Title: Proceedings of SPIE - The International Society for Optical Engineering
Event location: Virtual, Online, ESP
ISBN: 9781510645882
DOI: 10.1117/12.2597135
Abstract
Anti-reflective (AR) coatings are indispensable for an excellent imaging of optical systems. Common AR coating systems consist of layer stacks of alternating low and high refractive index materials with the residual reflection depending mainly on the low refractive index (LRI) of the last layer relative to air. However, conventional LRI materials are limited to SiO2 (n = 1,46 at 532 nm) and MgF2 (n = 1,38 at 532 nm). Nanostructures with an adjustable effective LRI in the range of 1.07 to 1.25 are an attractive alternative to these materials. Integrated as the last layer in the stack system, these structures significantly improve the optical performance compared to a conventional interference coating system, as a broadband AR coating can be realized. At the Fraunhofer Institute IOF in Jena, self-assembling AR nanostructures are already successfully developed using a conventional plasma-ion-assisted-deposition (Plasma-IAD) technology. Thereby organic material is deposited on the substrate via thermal evaporation and subsequently plasma-assisted self-assembling nanostructures are formed. Melamine and Uracil are already used as organic material. In this talk, we want to introduce Xanthine, another organic material that is also highly promising for the generation of nanostructures. We will demonstrate the formation of its nanostructures during plasma etching and investigate their optical performance for the use in an AR layer system.
Involved external institutions
Germany (DE)How to cite
APA:
Gärtner, A., Seifert, T., Rickelt, F., Schulz, U., & Tünnermann, A. (2021). Xanthine – A promising organic material for the development of nanostructured anti-reflective layers. In Michel Lequime, Detlev Ristau (Eds.), Proceedings of SPIE - The International Society for Optical Engineering. Virtual, Online, ESP: SPIE.
MLA:
Gärtner, Anne, et al. "Xanthine – A promising organic material for the development of nanostructured anti-reflective layers." Proceedings of the Advances in Optical Thin Films VII 2021, Virtual, Online, ESP Ed. Michel Lequime, Detlev Ristau, SPIE, 2021.
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