Abstract

A combination of plasmonic nanoparticles with a semiconductor is a feasible approach to realize multiple color exhibitions. The phenomenon is based on plasmon-driven charge separation between electrons and metal ions, but suitable only for light excitation with different wavelengths. Here, we introduce a color-adjustable method under monochromatic light irradiation. A smart strategy is proposed to construct sandwich structures of a hydrogel coating layer, thermally deposited Ag nanoparticles, and mesoporous ${\rm{TiO}_2}$ matrices. The contacting mode of ${\rm{TiO}_2}$ and nano-Ag at the Schottky interface is strongly dependent on the pore morphology of the oxide. Surface and interface plasmon resonances result in sample color switching from cyan to green and from brown to purple, respectively. The color response ability is further controlled by hydrogel coating, besides the exciting light wavelength. This Letter paves a bright way for colorful displays and information encryption.

© 2021 Optical Society of America

Dual-path inscription of plasmonic nano-Ag moiré fringes

Xin Li, Shencheng Fu, Jingying Miao, Hongfang Liu, Xintong Zhang, and Yichun Liu
Opt. Lett. 47(19) 4933-4936 (2022)

Plasmon-driven light harvesting in poly(vinyl alcohol) films for precise surface topography modulation

Hongfang Liu, Shencheng Fu, Xin Li, Jiahui Zhou, Yiqian Wang, Xintong Zhang, and Yichun Liu
Opt. Lett. 46(8) 1828-1831 (2021)

Structural modulation designed a thermally robust blue-cyan emitting phosphor Y₂Mg_0.8Sr_0.2 Al₄SiO₁₂:Eu²⁺ for the high color rendering index white LEDs

Huifang Yang, Panlai Li, Zejun Ye, Xiaoxue Huo, Qian Wu, Yu Wang, and Zhijun Wang
Opt. Lett. 46(22) 5639-5642 (2021)

Coefficient effect of rare earth and metal ions in phosphor combined glass materials for a wide color gamut display

Benle Dou, Xin Zhang, Feifei Huang, Hongping Ma, Youjie Hua, Junjie Zhang, and Shiqing Xu
Opt. Lett. 46(4) 737-740 (2021)

Twin lossy mode resonance on a single D-shaped optical fiber

J. J. Imas, C. R. Zamarreño, P. Zubiate, I. Del Villar, J. M. Pérez-Escudero, and I. R. Matías
Opt. Lett. 46(13) 3284-3287 (2021)