Multilayer all-dielectric metasurfaces expanding color gamut
Gu Xin,
Li Jiaqi,
Liang Zhouxin,
Wang Bo,
Zhu Zhaoxiang,
Chen Yujie
Affiliations
Gu Xin
State Key Laboratory of Optoelectronic Materials and Technologies, School of Electronics and Information Technology, 26469Sun Yat-Sen University, Guangzhou, China
Li Jiaqi
State Key Laboratory of Optoelectronic Materials and Technologies, School of Electronics and Information Technology, 26469Sun Yat-Sen University, Guangzhou, China
Liang Zhouxin
State Key Laboratory of Optoelectronic Materials and Technologies, School of Electronics and Information Technology, 26469Sun Yat-Sen University, Guangzhou, China
Wang Bo
State Key Laboratory of Optoelectronic Materials and Technologies, School of Electronics and Information Technology, 26469Sun Yat-Sen University, Guangzhou, China
Zhu Zhaoxiang
State Key Laboratory of Optoelectronic Materials and Technologies, School of Electronics and Information Technology, 26469Sun Yat-Sen University, Guangzhou, China
Chen Yujie
State Key Laboratory of Optoelectronic Materials and Technologies, Guangdong Provincial Key Laboratory of Optoelectronic Information Processing Chips and Systems, School of Electronics and Information Technology, 26469Sun Yat-Sen University, Guangzhou, China
Structural color, arising from the interaction between nanostructures and light, has experienced rapid development in recent years. However, high-order Mie resonances in dielectric materials often induce unnecessary sub-peaks, particularly at shorter wavelengths, reducing the vibrancy of colors. To address this, we have developed a multilayer dielectric metasurface based on silicon-rich silicon nitride (SRN), achieving expanded color gamut through precise refractive index matching and suppression of high-order resonances. This strategy introduces more design dimensions and can reduce the complexity of material deposition. It enables the generation of vibrant colors in a 3 × 3 array, with a resolution of approximately 25,400 dpi, demonstrating its potential applications in displays.
