- Organic electroluminescent compounds, and preparation method and application thereof
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The invention provides organic electroluminescent compounds, and a preparation method and application thereof. The organic electroluminescent compounds have a structure as shown in a formula I which is described in the specification. An organic light-emitting device comprises a substrate, a first electrode, a second electrode and at least one organic layer inserted between the first electrode andthe second electrode, wherein the organic layer contains any one or a combination of at least two selected from the organic electroluminescent compounds. The organic electroluminescent compounds haverelatively high luminous efficiency and relatively long service life.
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Paragraph 0147-0148; 0150; 0179-0180; 0182
(2020/09/09)
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- Carbazolo-aromatic ring thermal activation delayed fluorescence material and organic electroluminescent device thereof
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The invention discloses a carbazolo-aromatic ring thermal activation delayed fluorescence material and an organic electroluminescent device. The structural formula of the carbazolo-aromatic ring thermal activation delayed fluorescent material is shown in the specification. The carbazolo-aromatic ring thermal activation delayed fluorescent material provided by the invention takes a carbazolo-aromatic ring as a core; due to the large volume and rigidity, molecules have a steric hindrance effect, intramolecular distortion is realized, and electron clouds of the highest occupied orbit and the lowest empty orbit of the molecules can be relatively separated to obtain a quite small single triplet state energy level difference, so that light-emitting molecules with a thermal activation delayed fluorescence property are designed and prepared; the thermal performance, the light-emitting efficiency and the light color of the material can be adjusted, and the material can be used as a guest material, can also be used as a host material by utilizing the thermal activation delayed fluorescence property, and can be constructed through molecular design.
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Paragraph 0055-0057; 0059
(2020/10/04)
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- ORGANIC ELECTROLUMINESCENT DEVICE
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The present invention relates to organic electroluminescent devices which comprise mixtures of at least two electron-conducting materials, in particu-lar as matrix for phosphorescent emitters.
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Page/Page column 57-58
(2019/01/17)
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- COMPOSITIONS FOR ELECTRONIC DEVICES
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The present invention relates to compositions and formulations for electronic devices comprising mixtures of organic functional materials.
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Paragraph 0172; 0173
(2017/06/12)
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- Organic electroluminescence compound with screw structure and luminescent device thereof
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The invention provides an organic electroluminescence compound with a screw structure. The compound has relatively good heat stability, high luminous efficiency and high luminous purity, can be used for manufacturing organic electroluminescence devices an
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Paragraph 0052; 0055; 0056
(2017/07/11)
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- MATERIALS FOR ORGANIC ELECTROLUMINESCENT DEVICES
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The present invention relates to compounds which are suitable for use in electronic devices, and to electronic devices, in particular organic electroluminescent devices, comprising these compounds.
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Paragraph 0128-0130
(2016/10/07)
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