Color-tunable mixed photoluminescence emission from Alq3 organic layer in metal-Alq3-metal surface plasmon structure

Chen, N. C.; Liao, Chung-Chi; Chen, Cheng‐Chang; Fan, Wan-Ting; Wu, Jinhan; Li, Jung-Yu; Chen, Shih-Pu; Huang, Bohr–Ran; Lee, Li-Ling

doi:10.1186/1556-276x-9-569

Cited by 6 publications

(3 citation statements)

References 25 publications

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“…Insulator layer materials such as MgF, ZnSe, and SiO 2 are used. [23][24][25][26][27][28] Therefore, the lift-off technique offers a materialindependent fabrication process for free-standing periodic MIM structures.…”

Section: Designmentioning

confidence: 99%

Fabrication of free-standing subwavelength metal–insulator–metal gratings using high-aspect-ratio nanoimprint techniques

Honma

Mitsudome

Itoh

et al. 2016

Jpn. J. Appl. Phys.

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In this paper, we report on the construction of a free-standing metal–insulator–metal (MIM) subwavelength grating by nanoimprint and lift-off techniques, which can be used as a plasmonic color filter for imaging a multicolor spectrum. The free-standing subwavelength grating was designed to be composed of Al (50 nm)–SiO2 (150 nm)–Al (50 nm) layers, and the thickness of the SiO2 layer determined the wavelength selectivity for the color filter. The residual-free nanoimprint with an aspect ratio of was applied in the lift-off process to the formation of MIM gratings. We successfully developed subwavelength MIM gratings with heights of more than 200 nm. We also demonstrated the fabrication of a free-standing MIM grating without lateral stiction, which was expected to improve the wavelength selectivity of a free-standing plasmonic color filter.

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Section: Designmentioning

confidence: 99%

Fabrication of free-standing subwavelength metal–insulator–metal gratings using high-aspect-ratio nanoimprint techniques

Honma

Mitsudome

Itoh

et al. 2016

Jpn. J. Appl. Phys.

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“…These potential applications require low cost, tunable color and high stability rather than high efficiency and stable color. To meet these technical requirements, it is of great significance to design color-tunable OLEDs in terms of materials sciences and device engineering [11][12][13]. For example, Han et al have proposed an allochroic TADF material to prepare an OLED with irreversible allochroic characteristics for visible data storage and information security [14].…”

Section: Introductionmentioning

confidence: 99%

Simple-structure color-tunable fluorescent organic light-emitting devices with chromaticity difference beyond five-step McAdam ellipses

Zhang

Liu

Chen

et al. 2021

J. Phys. D: Appl. Phys.

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Currently, status lighting, such as signal indication and information coding, is considered as a novel potential application of organic light-emitting devices (OLEDs). Compared to conventional lighting and display applications, status lighting requires tunable colors distinguishable by the human eyes with natural appearances rather than high efficiency. Here, a color-tunable fluorescent OLED (CTFOLED) for status lighting is successfully prepared by using an ultrathin emitting layer consisting of a deep-blue host and a green guest. Through adjusting exciton concentration and forming an island growth induced exciplex interface, the CTFOLED shows a voltage-modulated emission color. Its coordinates change from (0.26, 0.61) to (0.35, 0.50) as the bias voltage increases from 4 to 10 V. The chromaticity coordinates are demonstrated to beyond five-step McAdam ellipses at the neighboring voltages (an interval of 2 V) such that the voltage-modulated color variations are easily distinguishable by the human eye. Finally, it also proposed that the CTFOLED can be used as a status light for presenting three statuses of drinking water: cold, warm and hot. This work paves a way for the application of OLEDs in status lighting.

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“…SPPs are surface electromagnetic waves formed by collective oscillation of free electrons in metal interacting with the incident light field. SPPs, which include waveguide plasmon polaritons and surface plasmon resonance (SPR), could support a series of functional devices, such as color-tunable and perfect absorber [11][12][13]. Because of the enhanced optical transmission (EOT) phenomenon of SPPs, it can be used for filter and absorber [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Dual-channel optical switch, refractive index sensor and slow light device based on a graphene metasurface

et al. 2020

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In this paper, we propose a graphene-based metasurface that exhibits multifunctions including tunable filter and slow-light which result from surface plasmon polaritons (SPPs) of graphene and plasmon induced transparency (PIT), respectively. The proposed metasurface is composed by two pairs of graphene nano-rings and a graphene nanoribbon. Each group of graphene rings is separately placed on both sides of the graphene nanoribbon. Adjusting the working state of the nanoribbon can realize the functional conversion of the proposed multifunctional metasurface. After that, in the state of two narrow filters, we put forward the application concept of dual-channel optical switch. Using phase modulation of PIT and flexible Fermi level of graphene, we can achieve tunable slow light. In addition, the result shows that the graphene-based metasurface as a refractive index sensor can achieve a sensitivity of 13670 nm/RIU in terahertz range. These results enable the proposed device to be widely applied in tunable optical switches, slow light, and sensors.

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Color-tunable mixed photoluminescence emission from Alq3 organic layer in metal-Alq3-metal surface plasmon structure

Cited by 6 publications

References 25 publications

Fabrication of free-standing subwavelength metal–insulator–metal gratings using high-aspect-ratio nanoimprint techniques

Fabrication of free-standing subwavelength metal–insulator–metal gratings using high-aspect-ratio nanoimprint techniques

Simple-structure color-tunable fluorescent organic light-emitting devices with chromaticity difference beyond five-step McAdam ellipses

Dual-channel optical switch, refractive index sensor and slow light device based on a graphene metasurface

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