Decorative near-infrared transmission filters featuring high-efficiency and angular-insensitivity employing 1D photonic crystals
near-infrared (NIR)-transmitting filters, colored decorations, photonic crystals, multilayer structures
We present a new scheme for visibly-opaque but near-infrared-transmitting filters involving 7 layers based on one-dimensional ternary photonic crystals, with capabilities in reaching nearly 100% transmission efficiency in the near-infrared region. Different decorative reflection colors can be created by adding additional three layers while maintaining the near-infrared transmission performance. In addition, our proposed structural colors show great angular insensitivity up to ±60° for both transverse electric and transverse magnetic polarizations, which are highly desired in various fields. The facile strategy described here involves a simple deposition method for the fabrication, thereby having great potential in diverse applications such as image sensors, anti-counterfeit tag, and optical measurement systems.
Tsinghua University Press
Chengang Ji,Chenying Yang,Weidong Shen,Kyu-Tae Lee,Yueguang Zhang,Xu Liu,L. Jay Guo, Decorative near-infrared transmission filters featuring high-efficiency and angular-insensitivity employing 1D photonic crystals. NanoRes.2019, 12(3): 543–548