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Organometallic complex, and light-emitting element, light-emitting device and electronic device including the organometallic complex

An organometallic and light-emitting element technology, applied in the direction of indium organic compounds, platinum-group organic compounds, platinum-based organic compounds, etc., can solve problems such as decreased luminous efficiency, decreased color purity, and unfavorable color reproducibility

Inactive Publication Date: 2008-10-01
SEMICON ENERGY LAB CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] In addition, since the organometallic complex disclosed in Non-Patent Document 2 emits orange-red light, when it is considered to be applied to a full-color display or the like, the color purity of red is lowered, which is an unfavorable factor in terms of color reproducibility.
On the other hand, when the emission color is in the deep red region, that is, when the emission wavelength is extremely long, although it is advantageous in terms of color reproducibility, the luminous efficiency (cd / A) decreases.

Method used

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  • Organometallic complex, and light-emitting element, light-emitting device and electronic device including the organometallic complex
  • Organometallic complex, and light-emitting element, light-emitting device and electronic device including the organometallic complex
  • Organometallic complex, and light-emitting element, light-emitting device and electronic device including the organometallic complex

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Embodiment approach 1

[0187] In Embodiment 1, the organometallic complex of the present invention will be described.

[0188] "Method for Synthesizing Dibenzo[f,h]quinoxaline Derivatives Represented by General Formula (G0)"

[0189] In the organometallic complex of the present invention, a dibenzo[f,h]quinoxaline derivative represented by the following general formula (G0) forms an organic metal complexes.

[0190]

[0191] In the general formula, Ar represents an aryl group having 6 to 25 carbon atoms. In addition, R 1 represents any one of hydrogen, an alkyl group having 1 to 4 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms. R 2 to R 8 Each represents any one of hydrogen, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, or a halogen group. In addition, R 3 and R 4 , R 4 and R 5 , and R 5 and R 6 They can also be combined with each other to form a ring.

[0192] Next, about the synthesis method of the dibenzo [f, h] quinoxaline der...

Embodiment approach 2

[0245] In this second embodiment, refer to figure 1 A mode in which the organometallic complex of the present invention described in Embodiment Mode 1 is used as a light-emitting element of a light-emitting substance will be described.

[0246] figure 1 It is a diagram showing a light-emitting element having a light-emitting layer 113 between the first electrode 101 and the second electrode 102 . In addition, the light-emitting layer 113 contains the organometallic complex of the present invention described in Embodiment Mode 1 above.

[0247] By applying a voltage to such a light-emitting element, holes injected from the side of the first electrode 101 and electrons injected from the side of the second electrode 102 recombine in the light-emitting layer 113, so that the organometallic complex of the present invention is in an excited state. . And, the organometallic complex emits light when returning from an excited state to a ground state. As such, the organometallic com...

Embodiment approach 3

[0270] The light-emitting device of the present invention may have a plurality of light-emitting layers. By providing a plurality of light emitting layers and emitting light from each light emitting layer, it is possible to obtain light emission in which a plurality of light emission is mixed. Thus, for example, white light can be obtained. In this embodiment 3, refer to figure 2 A mode of a light-emitting element having a plurality of light-emitting layers will be described.

[0271] exist figure 2 In this case, the first light emitting layer 213 and the second light emitting layer 215 are provided between the first electrode 201 and the second electrode 202, and the light emission from the first light emitting layer 213 and the light emission from the second light emitting layer 215 can be mixed in Shine together. A separation layer 214 is preferably provided between the first light emitting layer 213 and the second light emitting layer 215 .

[0272] When a voltage i...

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Abstract

An object is to provide an organometallic complex that can emit red light. Another object is to provide an organometallic complex having high emission efficiency. Still another object is to provide an organometallic complex that can emit red light with high luminous efficiency. The present invention provides an organometallic complex having a structure represented by the following general formula(G<1>'). In the formula, Ar represents an aryl group having 6 to 25 carbon atoms; R <1> represents any one of hydrogen, an alkyl group having <1> to <4> carbon atoms, and an alkoxy group having <1> to <4> carbonatoms; R <2> to R 8 each represent any one of hydrogen, an alkyl group having <1> to <4> carbon atoms, an alkoxy group having <1> to <4> carbon atoms, and a halogen group; at least one of pairs R <3> and R <4> , R<4> and R <5> , and R <5> and R 6 may be bound to each other to form a ring; and M represents a central metal of Group 9 elements and Group 10 elements.

Description

technical field [0001] This invention relates to organometallic complexes. In particular, the present invention relates to organometallic complexes capable of converting an excited triplet state to luminescence. Furthermore, the present invention relates to a light-emitting element, a light-emitting device, and an electronic appliance using the organometallic complex. Background technique [0002] Organic compounds are in an excited state by absorbing light. Furthermore, organic compounds may cause various reactions (photochemical reactions) or luminescence (luminescence) through the excited state, and thus are used in various ways. [0003] As an example of a photochemical reaction, the reaction (oxygen addition) between singlet oxygen and an unsaturated organic molecule is known (see, for example, Non-Patent Document 1). Since the ground state of oxygen molecules is a triplet state, singlet oxygen (singlet oxygen) is not generated by direct photoexcitation. However, in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F15/00C07D241/36H01L51/54H10K99/00
CPCY10S428/917C07F15/0086H01L51/0085C07F15/0033H10K85/342C07F15/00C07F17/02C07F19/00C09K11/06
Inventor 井上英子瀬尾哲史大泽信晴
Owner SEMICON ENERGY LAB CO LTD
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