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Organic electroluminescent element, method for manufacturing organic electroluminescent element, display device, lighting device and organic electroluminescent element material

An electroluminescent element and luminescent technology, applied in the direction of luminescent materials, electrical components, semiconductor/solid-state device manufacturing, etc.

Active Publication Date: 2018-08-03
MERCK PATENT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some improvement in luminescence lifetime can be achieved by using these compounds, but there is still room for further improvement

Method used

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  • Organic electroluminescent element, method for manufacturing organic electroluminescent element, display device, lighting device and organic electroluminescent element material
  • Organic electroluminescent element, method for manufacturing organic electroluminescent element, display device, lighting device and organic electroluminescent element material
  • Organic electroluminescent element, method for manufacturing organic electroluminescent element, display device, lighting device and organic electroluminescent element material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0379] "Manufacturing of Organic EL Elements 1-1"

[0380] On a glass substrate of 100 mm×100 mm×1.1 mm, ITO (indium tin oxide) was formed into a film with a thickness of 100 nm as an anode (NA-45 manufactured by AvanStrate Co., Ltd.). Then, the transparent support substrate provided with the ITO transparent electrode was ultrasonically cleaned with isopropanol, dried with dry nitrogen, and UV ozone cleaned for 5 minutes.

[0381] The transparent support substrate was fixed to the substrate holder of a commercially available vacuum evaporation device. On the other hand, 200 mg of HT-1 was added as a hole injection material to a resistance heating boat made of molybdenum, and HT-1 was added to another resistance heating boat made of molybdenum. Add 200mg of HT-2 as a hole transport material to the dish, add 200mg of comparative compound 1 as a dopant to another resistance heating boat made of molybdenum, add 200mg of the main compound to another resistance heating boat made of ...

Embodiment 2

[0425] "Manufacturing of Organic EL Elements 2-1"

[0426] On a glass substrate of 100 mm×100 mm×1.1 mm, ITO (indium tin oxide) was formed into a film with a thickness of 100 nm as an anode (NA-45 manufactured by AvanStrate Co., Ltd.). Thereafter, the transparent support substrate provided with the ITO transparent electrode was ultrasonically cleaned with isopropanol, dried with dry nitrogen, and UV ozone cleaned for 5 minutes.

[0427] On this transparent support substrate, poly(3,4-ethylenedioxythiophene)-polystyrene sulfonate (PEDOT / PSS, manufactured by H.C. Starck, CLEVIO P VPAI 4083) was diluted with pure water to 70 The mass % solution was spin-coated at 3000 rpm for 30 seconds to form a thin film, and then dried at 200° C. for 1 hour to form a first hole transport layer with a thickness of 20 nm.

[0428] The transparent support substrate was fixed to the substrate holder of a commercially available vacuum evaporation device. On the other hand, 200 mg of HT-2 was added...

Embodiment 3

[0442] "Manufacturing of Organic EL Elements 3-1"

[0443] On a glass substrate of 100 mm×100 mm×1.1 mm, ITO (indium tin oxide) was formed into a film with a thickness of 100 nm as an anode (NA-45 manufactured by AvanStrate Co., Ltd.). Thereafter, the transparent support substrate provided with the ITO transparent electrode was ultrasonically cleaned with isopropanol, dried with dry nitrogen, and UV ozone cleaned for 5 minutes.

[0444] On this transparent support substrate, poly(3,4-ethylenedioxythiophene)-polystyrene sulfonate (PEDOT / PSS, manufactured by Bayer, Baytron P Al 4083) was diluted to 70% by mass with pure water. % solution, under the conditions of 3000 rpm and 30 seconds, a thin film was formed by spin coating, and then dried at 200° C. for 1 hour to form a first hole transport layer with a layer thickness of 20 nm.

[0445] This substrate was moved under a nitrogen atmosphere, and a solution obtained by dissolving 47 mg of HT-3 and 3 mg of HT-4 in 10 mL of tolue...

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Abstract

Provided is an organic EL element which has a low light emission ratio of a component that has a wavelength longer than the emission peak wavelength, high luminous efficiency, low driving voltage, long emission life and excellent long-term stability, while being suppressed in voltage increase during the driving. This organic EL element comprises organic layers that are sandwiched between a positive electrode and a negative electrode; and at least one of the organic layers contains a compound that has a structure represented by general formula (1). (In general formula (1), R represents an alkylgroup, a halogen atom, an alkoxy group, an aryloxy group, an alkylthio group, an arylthio group, an acyl group, a sulfinyl group, a sulfonyl group, a nitro group, a cyano group, a hydroxy group or amercapto group; Ar represents an aromatic hydrocarbon group or an aromatic heterocyclic group; X1-L1-X2 represents a bidentate ligand; and two adjacent moieties among R1-R4 moieties represent groups represented by one of general formulae (2)-(4).) (In general formulae (2)-(4), each of Y1-Y4 moieties represents O, S or N-R'; each of Y5 and Y6 moieties represents CR'' or N; and each of Z1-Z8 moieties represents C-Rx or N.) AA General formula

Description

technical field [0001] The invention relates to an organic electroluminescent element, a manufacturing method of the organic electroluminescent element, a display device, an illuminating device and a material for the organic electroluminescent element. In particular, the present invention relates to an organic electroluminescent element having a small luminescence ratio of a component having a longer wavelength than the maximum luminescence wavelength, high luminous efficiency, low driving voltage, long luminous lifetime, small voltage rise during driving, and excellent stability over time. A method for manufacturing an element includes a display device and an illumination device for the element, and an organic electroluminescent element material used in the element. Background technique [0002] An organic electroluminescent element (hereinafter also referred to as an "organic EL element") is a thin-film all-solid element in which an organic thin film layer (single layer or...

Claims

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Application Information

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IPC IPC(8): H01L51/50C07F15/00C09K11/06G09F9/30H01L27/32
CPCC07F15/00C09K11/06G09F9/30H10K59/875H10K85/342H10K50/11
Inventor 加羽泽麻由香安川则子大津信也
Owner MERCK PATENT GMBH
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