Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Color Glass by Layered Nitride Films for Building Integrated Photovoltaic (BIPV) System

Version 1 : Received: 5 February 2021 / Approved: 8 February 2021 / Online: 8 February 2021 (11:13:07 CET)

How to cite: Gasonoo, A.; Ahn, H.; Lim, S.; Lee, J.; Choi, Y. Color Glass by Layered Nitride Films for Building Integrated Photovoltaic (BIPV) System. Preprints 2021, 2021020190 (doi: 10.20944/preprints202102.0190.v1). Gasonoo, A.; Ahn, H.; Lim, S.; Lee, J.; Choi, Y. Color Glass by Layered Nitride Films for Building Integrated Photovoltaic (BIPV) System. Preprints 2021, 2021020190 (doi: 10.20944/preprints202102.0190.v1).

Abstract

We investigated layered titanium nitride (TiN) and aluminum nitride (AlN) for color glasses in Building Integrated Photovoltaic (BIPV) systems. AlN and TiN are among suitable and cost-effective optical materials to be used as thin multilayer films, owing to the significant difference in their refractive index. To fabricate the structure, we used radio frequency magnetron deposition method to achieve the target thickness uniformly. A simple, fast, and cheap fabrication method is achieved by depositing the multilayer films in a single sputtering chamber. It is demonstrated that a multilayer stack that allows light to move from a low refractive index layer to a high refractive index layer or vice-versa can effectively create various distinct color reflections for different film thicknesses and multilayer structures. It is investigated from simulation based on wave optics that, TiN/AlN multilayer offers better color design freedom and cheaper fabrication process as compared to AlN/TiN multilayer films. Blue, green, and yellow color glasses with optical transmittance of more than 80% was achieved by ITO coated glass/TiN/AlN multilayer films. This technology exhibits good potential in commercial BIPV system applications.

Subject Areas

BIPV; color glass; thin film interference; optical path-length difference; RF Sputtering; nitride; multilayer film

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