Transmissive structural color filters using vertically coupled aluminum nanohole/nanodisk array with a triangular-lattice

Structural color filters, which obtain color selection by varying structures, have attracted extensive research interest in recent years due to the advantages of compactness, stability, multifunctions, and so on. In general, the mechanisms of structural colors are based on the interaction between light and structures, including light diffraction, cavity resonance, and surface plasmon resonance. This paper reviews recent progress of various structural color techniques and the integration applications of structural color filters in CMOS image sensors, solar cells, and display.

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Structural Color Filters Enabled by a Dielectric Metasurface Incorporating Hydrogenated Amorphous Silicon Nanodisks

Scientific Reports ◽

10.1038/s41598-017-02911-w ◽

2017 ◽

Vol 7 (1) ◽

Cited By ~ 58

Author(s):

Chul-Soon Park ◽

Vivek Raj Shrestha ◽

Wenjing Yue ◽

Song Gao ◽

Sang-Shin Lee ◽

...

Keyword(s):

Amorphous Silicon ◽

Hydrogenated Amorphous Silicon ◽

Structural Color ◽

Hydrogenated Amorphous ◽

Color Filters ◽

Dielectric Metasurface

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Design and Fabrication of Structural Color Filters with Polymer-Based Guided-Mode Resonant Gratings by Nanoimprint Lithography

Japanese Journal of Applied Physics ◽

10.1143/jjap.48.06fh04 ◽

2009 ◽

Vol 48 (6) ◽

pp. 06FH04 ◽

Cited By ~ 19

Author(s):

Yoshiaki Kanamori ◽

Hiroki Katsube ◽

Tomonobu Furuta ◽

Shoji Hasegawa ◽

Kazuhiro Hane

Keyword(s):

Nanoimprint Lithography ◽

Structural Color ◽

Guided Mode ◽

Color Filters

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Replicating the Cynandra opis Butterfly's Structural Color for Bioinspired Bigrating Color Filters

Advanced Materials ◽

10.1002/adma.202109161 ◽

2022 ◽

pp. 2109161

Author(s):

Xiaobao Cao ◽

Ying Du ◽

Yujia Guo ◽

Guohang Hu ◽

Ming Zhang ◽

...

Keyword(s):

Structural Color ◽

Color Filters

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Flexible High-Color-Purity Structural Color Filters Based on a Higher-Order Optical Resonance Suppression

Scientific Reports ◽

10.1038/s41598-019-51165-1 ◽

2019 ◽

Vol 9 (1) ◽

Cited By ~ 12

Author(s):

Kyu-Tae Lee ◽

Sung Yong Han ◽

Zijia Li ◽

Hyoung Won Baac ◽

Hui Joon Park

Keyword(s):

Flexible Substrate ◽

Transmission Efficiency ◽

Higher Order ◽

Structural Color ◽

Color Purity ◽

Optical Resonance ◽

Short Wavelength Range ◽

Absorbing Layer ◽

Color Filters ◽

High Color Purity

Abstract We present flexible transmissive structural color filters with high-color-purity based on a higher-order resonance suppression by inserting an ultrathin absorbing layer in the middle of a cavity. A 3rd order Fabry–Pérot (F-P) resonance, which exhibits a narrower bandwidth than a fundamental F-P resonance, is used to produce transmissive colors with an improved color purity. The thin absorbing layer is properly placed at a center of the cavity to highly suppress only a 5th order F-P resonance appearing at a short wavelength range while not affecting the 3rd order F-P resonance for color generation, thus being able to attain the high-color-purity transmissive colors without reducing a transmission efficiency. In addition, angle-insensitive properties are achieved by compensating a net phase shift with a dielectric overlay and using a material with a high refractive index for the cavity medium. Moreover, the transmissive colors on a flexible substrate are demonstrated, presenting that changes in both the resonance wavelength and the transmission efficiency are nearly negligible when the color filters are bent with a bending radius of 5 mm and over 3000 times bending tests. The described approach could pave the way for various applications, such as colored displays, decorative solar panels, and image sensors.

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