Structural coloration using bandgap engineered, low-optical losses hydrogenated amorphous silicon

Younghwan Yang; Jaehyuck Jang; Chunghwan Jung; Trevon Badloe; Junsuk Rho

doi:10.1117/12.2673186

6 October 2023 Structural coloration using bandgap engineered, low-optical losses hydrogenated amorphous silicon

Younghwan Yang, Jaehyuck Jang, Chunghwan Jung, Trevon Badloe, Junsuk Rho

Proceedings Volume PC12646, Metamaterials, Metadevices, and Metasystems 2023; PC126461O (2023) https://doi.org/10.1117/12.2673186
Event: SPIE Nanoscience + Engineering, 2023, San Diego, California, United States

Conference Poster

Abstract

Here, we demonstrated vivid structural coloration and polarization-sensitive color metasurfaces using bandgap-engineered a-Si:H, whose extinction coefficient is near zero at the entire visible spectrum. The scattering response of high-index nanostructures is numerically analyzed with multipole expansion, and we vitrify that the low-optical losses of bandgap-engineered a-Si:H significantly improve color coverage of metasurface, achieving comparable coverage with the Adobe RGB gamut. Also, we demonstrated the application of optical encryption with polarization-sensitive structural coloration, achieving near-zero reflection when optical information is encrypted. We believe that structural coloration with low-loss a-Si:H will be widely used with its advantageous benefits compared to chemical pigments.

Citation Download Citation

Younghwan Yang, Jaehyuck Jang, Chunghwan Jung, Trevon Badloe, and Junsuk Rho "Structural coloration using bandgap engineered, low-optical losses hydrogenated amorphous silicon", Proc. SPIE PC12646, Metamaterials, Metadevices, and Metasystems 2023, PC126461O (6 October 2023); https://doi.org/10.1117/12.2673186

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available