Holographically fabricated, highly reflective nanoporous polymeric distributed Bragg reflectors with red, green, and blue colors [Invited]

Haodong Jiang; Wenfeng Cai; Ke Li; Ming Cheng; Vineet Kumar; Zhen Yin; Davy Gérard; Dan Luo; Quanquan Mu; Yanjun Liu

doi:10.3788/COL202018.080007

Chinese Optics Letters, Volume. 18, Issue 8, 080007(2020)

Holographically fabricated, highly reflective nanoporous polymeric distributed Bragg reflectors with red, green, and blue colors [Invited]

Haodong Jiang^1,2, Wenfeng Cai¹, Ke Li^1,3, Ming Cheng¹, Vineet Kumar¹, Zhen Yin¹, Davy Gérard³, Dan Luo¹, Quanquan Mu⁴, and Yanjun Liu^1,4,5、*

Author Affiliations

¹Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China

²Harbin Institute of Technology, Harbin 150001, China

³Light, Nanomaterials, Nanotechnologies (L2n), Université de Technologie de Troyes & CNRS ERL 7004, Troyes 10004, France

⁴State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China

⁵Key Laboratory of Energy Conversion and Storage Technologies (Southern University of Science and Technology), Ministry of Education, Shenzhen 518055, China

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Figures & Tables(7)

Fig. 1. (a) Experimental setup for fabricating DBR films. (b) Schematic optical interference inside the LC cell via the single-prism configuration.

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Fig. 2. Simulated interference patterns with three different incident angles of (a) 7°, (b) 14°, and (c) 21°, respectively.

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Fig. 3. Transparency-tested photos for a blue film ( $a_{1}$ ), ( $a_{2}$ ) before and ( $b_{1}$ ), ( $b_{2}$ ) after the cell opening, which were taken from the ( $a_{1}$ ), ( $b_{1}$ ) black and ( $a_{2}$ ), ( $b_{2}$ ) white backgrounds, respectively. Measured transmission and reflection spectra for blue, green, and red films ( $a_{3}$ ) before and ( $b_{3}$ ) after the cell opening, respectively.

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Fig. 4. ( $a_{1}$ ), ( $b_{1}$ ), ( $c_{1}$ ) Camera photos, ( $a_{2}$ ), ( $b_{2}$ ), ( $c_{2}$ ) optical microscopic images, and ( $a_{3}$ ), ( $b_{3}$ ), ( $c_{3}$ ) SEM images of the ( $a_{1}$ )–( $a_{3}$ ) blue, ( $b_{1}$ )–( $b_{3}$ ) green, and ( $c_{1}$ )–( $c_{3}$ ) red films, respectively.

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Fig. 5. Measured and simulated reflection spectra for the blue, green, and red films, respectively.

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$Measured spectral changes of the reflection for the (a) blue, (b) green, and (c) red films that infiltrated with methanol, ethanol, n-propanol, and n-butanol, respectively. (d) Summarized peak and intensity change as the function of the refractive index.$

Fig. 6. Measured spectral changes of the reflection for the (a) blue, (b) green, and (c) red films that infiltrated with methanol, ethanol, $n$ -propanol, and $n$ -butanol, respectively. (d) Summarized peak and intensity change as the function of the refractive index.

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Table 1. The Estimated Thickness of the Polymer-Rich and Nanopore-Rich Layers for the Blue, Green, and Red Films
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Table 1. The Estimated Thickness of the Polymer-Rich and Nanopore-Rich Layers for the Blue, Green, and Red Films
Sample Total Period (nm) Polymer Layer Thickness (nm) Air Layer Thickness (nm)
Blue 350 204 146
Green 458 237 221
Red 663 319 344

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Haodong Jiang, Wenfeng Cai, Ke Li, Ming Cheng, Vineet Kumar, Zhen Yin, Davy Gérard, Dan Luo, Quanquan Mu, Yanjun Liu, "Holographically fabricated, highly reflective nanoporous polymeric distributed Bragg reflectors with red, green, and blue colors [Invited]," Chin. Opt. Lett. 18, 080007 (2020)

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