Synthesis and characterisation of triphenylmethine dyes for colour conversion layer of the virtual and augmented reality display

Jang, Seong Hyun; Lee, GeonHo; Lee, Sang Yoon; Kim, Se Hun; Lee, Woosung; Jung, Jae Woong; Kim, Jae Pil; Choi, Jun

doi:10.1016/j.dyepig.2022.110419

Cited by 6 publications

(2 citation statements)

References 18 publications

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“…The structural parameters such as the height h, spacing p, bottom radius R, and top radius r of the nanocones were adjusted to tune transmission. Different from typical color-filtering methods using dyes, 31 metallic or semiconductor nanoparticles, 32 or multilayer diffractive stacks made of thin films, 33 the transmission color filters based on the nanocone array took advantage of 3D DLW using TPP photoresist with ease of mask-free, high-resolution, and arbitrary geometries. Such features enabled facile color filtering through wavelengthdependent diffraction into higher orders of magnitude to achieve the desired transmission profiles.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Dual-Material Metastructure for Simultaneous Filtering and Focusing of Incoherent White Light

Yu,

Lamon

et al. 2023

ACS Photonics

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Microlenses integrated with color filters continue to be of great interest for sensors, light-emitting diodes, threedimensional (3D) imaging, and 3D display applications. Many techniques have been investigated to reduce the thickness and the size of the total devices, and microlenses with hybrid functions have been developed. However, traditional hybrid microlenses usually work under coherent illumination due to the single material used and the lack of effective diffraction elements for incoherent illumination. Here, we demonstrate a new flat optics device based on a dual-material 3D metastructure that achieves simultaneous color filtering and focusing under spatially incoherent white light illumination. Our device comprises a nanocone array fabricated by 3D direct laser writing at the interface with a Fresnel metalens based on a typical two-dimensional (2D) material: graphene oxide-reduced graphene oxide. The unique spatial arrangement of the nanocone array enables us to double the acceptable spatial coherence of the illumination compared with conventional nanopillarbased structural color. The chemical and optical stabilities of the metalens under the laser fabrication conditions allow for the successful integration with the nanocone array (∼200 nm diameter) and diffraction-limited focusing (within 50 μm). The dualmaterial 3D metastructure enables simultaneous filtering and focusing for selected wavelengths within a distance of 20 μm under incoherent white light illumination. Our results show promise for expanding the degrees of freedom of light manipulation in flat optics and the implementation of hybrid and multifunctional photonic devices in CCD and CMOS-compatible, high-resolution light field prints for 3D display.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Dual-Material Metastructure for Simultaneous Filtering and Focusing of Incoherent White Light

Yu,

Lamon

et al. 2023

ACS Photonics

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“…©SRP 2023, DOI: https://doi.org/10.47758/ijn.vi4.91 Figure (2) show, the maximum peaks were obtained in pomegranate dye at (76%) with a concentration of 1 ml, and that the transmittance of (Pomegranate/PVA-TiO2) nanocomposites declines with increasing natural dye concentration. Because of their high transmittance in the visible and infrared spectrums, these thin films may find application as a window for solar cells [16] . In fig.…”

Section: Resultsmentioning

confidence: 99%

Synthesis, Optical and D.C Electrical Characterization of (Pomegranate/PVA/TiO2) Ternary-Nanocomposites, As a Window to Improve Solar Cell Performance

Mohaimeed,

Bahaa H. Rabee

2023

IJNSN

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This paper aims to fabricate a nanocomposite made of polyvinyl alcohol, titanium dioxide, and natural pomegranate dye that can function as a sunlight sensor for solar cells. The thin films' structural, optical and electrical properties of (Pomegranate/PVA-TiO2) were studied. Images from (FE-SEM) taken at a concentration of 0.3 weight percent revealed the structural features of the material., the surface of the (Pomegranate/PVA-TiO2) nanocomposite films demonstrations many aggregations or chucks arbitrarily dispersed of (TiO2) with grain size (47-55) nm. With an increase in natural dye content, transmittance decreases. Pomegranate dye had the most prominent peaks, measuring (76%) at a concentration of 1 ml. All optical constants, including parameters such n and k for transparency and extinction, r and i for real and imaginary dielectric constants, and electrical conductivity for optical conductivity, rise with pomegranate dye concentration. The results showed that the electrical conductivity at a concentration of (4 ml) recorded the greatest possible (6.4×10-6) (Ω.cm)-1, and the activation energy decreased with increasing concentration of pomegranate dye (0.29-0.20) eV. Then a solar cell was prepared from SnO2/Si, and the films were deposited on it, and the efficiency results were. After being coated with (Pomegranate/PVA-TiO2) nanocomposites, the efficiency (ƞ) increased from (4.3-4.75). In addition to the increase in current (Isc) from 23 to 30 mA/cm2. The final results showed that the (Pomegranate/PVA-TiO2) nanocomposite possesses a high transmittance, low activation energy and is sensitive to light in the Vis and IR regions, making it suitable for optical application.

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Spatial Analysis of Social Media’s Proxies for Human Emotion and Cognition

Corso,

Disanto,

Corso

et al. 2024

Lecture Notes in Computer Science

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Synthesis and characterisation of triphenylmethine dyes for colour conversion layer of the virtual and augmented reality display

Cited by 6 publications

References 18 publications

Dual-Material Metastructure for Simultaneous Filtering and Focusing of Incoherent White Light

Dual-Material Metastructure for Simultaneous Filtering and Focusing of Incoherent White Light

Synthesis, Optical and D.C Electrical Characterization of (Pomegranate/PVA/TiO2) Ternary-Nanocomposites, As a Window to Improve Solar Cell Performance

Spatial Analysis of Social Media’s Proxies for Human Emotion and Cognition

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