Related Experiment Video
Updated: May 29, 2026
10:31
Developing High Performance GaP/Si Heterojunction Solar Cells
Published on: November 16, 2018
Capped Mo/Si multilayers with improved performance at 30.4 nm for future solar missions
Alain Jody Corso1, Paola Zuppella, Piergiorgio Nicolosi
1CNR – Institute for Photonics and Nanotechnologies LUXOR Lab, via Trasea 7, 35131 Padova, Italy. corsoala@dei.unipd.it
Optics Express
|September 22, 2011
Summary
New capping layers for Mo/Si multilayers significantly boost reflectance at 30.4 nm. These advanced coatings are stable and show potential for solar imaging instruments like METIS.
Area of Science:
- Materials Science
- Optics
- Astrophysics
Background:
- Periodic Mo/Si multilayers are crucial for extreme ultraviolet (EUV) optics.
- Optimizing reflectance at specific wavelengths is key for advanced optical instruments.
Purpose of the Study:
- To design, deposit, and characterize novel capping layer structures for Mo/Si multilayers.
- To enhance reflectance at 30.4 nm for improved optical performance.
- To evaluate the stability and spectral applicability of these coatings for solar observation.
Main Methods:
- Deposition of various capping layer materials on Mo/Si multilayers.
- Characterization of optical properties, including reflectance measurements at 30.4 nm, 121.6 nm, and visible ranges.
- Assessment of coating stability over time.
Main Results:
- Several novel capping layer structures demonstrated improved reflectance compared to standard Mo/Si multilayers.
- The proposed coatings exhibited excellent long-term stability.
- Reflectance was also evaluated at 121.6 nm and in the visible spectrum.
Conclusions:
- Novel capping layers effectively optimize Mo/Si multilayer performance at 30.4 nm.
- The developed coatings are stable and suitable for potential use in instruments like the Multi Element Telescope for Imaging and Spectroscopy (METIS).
- These advancements contribute to the development of next-generation solar observation technology.
