Colored reflective organic light-emitting device without bias

Chiu, Tien‐Lung; Hsiao, Yi-Peng; Chuang, Yating; Lai, Chih‐Ming; Ho, H.P.

doi:10.1016/j.orgel.2013.12.031

Cited by 7 publications

(4 citation statements)

References 27 publications

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“…For instance, the red device with a 170 nm OSL shows 1416 cd/m 2 at 5.4 V, but the red device with a 150 nm OSL shows 322 cd/m 2 at the same voltage. In the same manner, the green device exhibits 4621 cd/ m 2 with a 170 nm OSL but 1833 cd/m 2 in the device with a 150 nm OSL at the same voltage of 4.2 V. The blue devices with 140 nm and 170 nm OSLs have a luminance of 366 cd/m 2 and 952 cd/m 2 , respectively, at 4 V. These results may be due to the different EL spectra and the distribution of devices resulting from different optical lengths of micro-cavity structure [19][20][21]. Figure 6 depicts the current density-voltage-luminance (J-V-L) characteristics of R, G, B devices with micro-cavity structure embedded cathodes depending on OSL thicknesses.…”

Section: Resultsmentioning

confidence: 95%

Improvement of Colour Gamut in Bottom-Emission Organic Light-Emitting Diodes Using Micro-Cavity Structure Embedded Cathodes

Lee

et al. 2018

Electronics

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We demonstrate an approach for improving the colour gamut of bottom-emission organic light-emitting diodes (OLEDs) through micro-cavity structure embedded cathodes. The devices with micro-cavity structure embedded cathodes showed an improved colour gamut of 91.5% (National Television System Committee (NTSC)), 95.8% (Adobe RGB), and 129.2% (sRGB), compared to those of the devices without micro-cavity structure embedded cathodes—59.2% (NTSC), 62.0% (Adobe RGB), 83.6% (sRGB). In addition, the performance of red, green, and blue devices are also investigated depending on the optical length of the micro-cavity structure.

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Section: Resultsmentioning

confidence: 95%

Improvement of Colour Gamut in Bottom-Emission Organic Light-Emitting Diodes Using Micro-Cavity Structure Embedded Cathodes

Lee

et al. 2018

Electronics

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“…It is known that different colors of light have different wavelengths and long wavelength lights are perceived more easily by birds than the short wavelength lights, though the light intensities remain the same ( 3 ). Generally, red light of long wavelength has a favorable effect on egg production and the onset of laying, while blue or green light of short wavelength had a negative effect on egg production but had an accelerating effect on growth ( 4 , 5 ). To our knowledge, a majority of research on this aspect was focused on hens, ducks, and turkeys along with rabbits, sheep, camels, and so on ( 6 ).…”

Section: Introductionmentioning

confidence: 99%

Reproductive Performance of Zi-Goose Promoted by Red Color Illumination

Chen

Zhao

et al. 2022

Front. Vet. Sci.

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The color of light affects the reproductive performance of poultry, but it is not clear what efficient illumination strategy could be adopted to improve the reproductive performance of Zi-goose. Red light can increase the average weekly egg production rate, egg production, and qualified production. It can increase the serum GnRH level and decrease the serum PRL, MT, and T4 levels. In our study, red light for 12 h increased the average weekly laying rate, average qualified egg production, and hatching rate of Zi-goose eggs, and increased the serum levels of FSH, LH, P4, E2, MT, T3, and T4. Blue light at 14 h improved the average weekly egg production rate, average egg production, and average qualified egg production, and reduce serum PRL and MT levels to ensure the improvement of reproductive performance of goose. A total of 705,714 overlapping group sequences, 471,145 transcript sequences, and 268,609 single gene sequences were obtained from 18 sequencing samples, with a total length of 323.04, 668.53, and 247.88 M, respectively. About 176,416 unigenes were annotated successfully in six databases, accounting for 65.68% of the total unigenes obtained. 2,106, 2,142, and 8,892 unigenes were identified in the hypothalamus, pituitary gland, and ovary of the birds respectively, with different expressions of light regulation. The hypothalamus, ovary, and pituitary were involved in 279, 327, and 275 KEGG (Kyoto Encyclopedia of Genes and Genomes) metabolic pathways in response to light, respectively. Through further significance analysis and differential discovery rate control, a total of five metabolic pathways were obtained which were closely related to the reproductive hormones of goose. Ten candidate genes related to the reproductive performance of goslings were selected according to the identification results of differentially expressed genes of goslings under red light and white light conditions and the genes involved in metabolic pathways significantly related to the reproductive hormones of goslings. The expression levels of GnRh-1 in the hypothalamus, GnRH-R, FSHβ and LHβ in the pituitary gland, and FSH-R and LH-R candidate genes in the ovary were higher under the 12 h red light treatment than white light. However, the expression levels of VIP, PRL, and PRL-R candidate genes in the hypothalamus, pituitary and ovary were lower under 12 h red light than under 12 h white light.

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“…In recent decades, organic light-emitting diodes (OLEDs) have attracted considerable research attention because of their promisinga pplications in the fields of solid-state lighting and flexible optoelectronic displays. [1][2][3][4] To increase the illumination efficiency of emitting devices, great improvements have been made including optimizing device structures,e xploring novel emitting materials, [5][6][7][8] and adjusting the carrierb uffer ability [9] by enhancing the transport of electrona nd hole between the active layers. [10,11] In particular,t he electron-hole balance between the active layers determines the specific performance of sandwich-like light-emitting devices.…”

Section: Introductionmentioning

confidence: 99%

C−H Direct Arylated 6H‐Indolo[2,3‐b]quinoxaline Derivative as a Thickness‐Dependent Hole‐Injection Layer

Dong

Fang

et al. 2017

Chemistry An Asian Journal

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A novel perfluoro-1,4-phenylenyl 6H-indolo[2,3-b]quinoxaline derivative (TFBIQ) was designed and synthesized by using a C-H direct arylation method. The optoelectrical properties of the obtained TFBIQ were fully characterized by UV/Vis spectroscopy, photoluminescence spectroscopy, cyclic voltammetry, and a group of Alq -based green organic light-emitting diodes (OLEDs). Device A, which used 0.5 nm-thick TFBIQ as the interfacial modification layer, exhibited the five best advantages of device performance including a minimum turn-on voltage as low as 3.1 V, a maximum luminescence intensity as high as 26564 cd m , a highest current density value of 348.9 mA cm at a voltage of 11 V, the smallest efficiency roll-off, as well as the greatest power efficiency of 1.46 lm W relative to all of the other tested devices with thicker TFBIQ and also 10 nm-thick MoO as hole-injection layers (HILs). As a promising candidate for an organic HIL material, the as-prepared TFBIQ exhibited a strong thickness effect on the performance of corresponding OLEDs. Furthermore, the theoretical calculated vertical ionization potential of the fluorinated TFBIQ suggests better anti-oxidation stability than that of the non-fluorinated structure.

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Colored reflective organic light-emitting device without bias

Cited by 7 publications

References 27 publications

Improvement of Colour Gamut in Bottom-Emission Organic Light-Emitting Diodes Using Micro-Cavity Structure Embedded Cathodes

Improvement of Colour Gamut in Bottom-Emission Organic Light-Emitting Diodes Using Micro-Cavity Structure Embedded Cathodes

Reproductive Performance of Zi-Goose Promoted by Red Color Illumination

C−H Direct Arylated 6H‐Indolo[2,3‐b]quinoxaline Derivative as a Thickness‐Dependent Hole‐Injection Layer

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