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Composite material, light emitting element using the same, light emitting device, and electric apparatus

A technology of composite materials and light-emitting elements, which is applied in the field of composite materials, can solve the problems of reducing the luminous efficiency of components and the inability to effectively extract light, and achieve the effects of high visible light transmittance, low excitation voltage, and good luminous efficiency

Inactive Publication Date: 2008-03-19
SEMICON ENERGY LAB CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] However, as seen from the embodiment modes of the present invention, in the mixed layer of an organic compound and a metal oxide (which is disclosed in Patent Document 1), a large The absorption peak, therefore, there is a problem of light transmission performance
Therefore, the light formed inside the element cannot be effectively extracted, thus reducing the luminous efficiency of the element

Method used

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  • Composite material, light emitting element using the same, light emitting device, and electric apparatus
  • Composite material, light emitting element using the same, light emitting device, and electric apparatus
  • Composite material, light emitting element using the same, light emitting device, and electric apparatus

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Embodiment approach 1

[0211] In Embodiment 1, a production example of the composite material of the present invention will be described. Further, the present invention is not limited to these embodiments, but the scope of the claims defines the present invention. The same is true for embodiment 2. In Embodiment 1, a manufacturing example of a composite material will be described in detail.

manufacture Embodiment 1

[0212] "Manufacturing Example 1" (DTDPPA+MoOx)

[0213] First, a glass substrate is fixed to a substrate holder in a vacuum evaporation apparatus. Then, pour DTDPPA (N, N'-two (p-tolyl)-N, N'-diphenyl-p-phenylenediamine) independently in different resistance heating type evaporation sources (it is represented by the general structure ( 14) represents) and molybdenum oxide (valence of molybdenum: VI). in which the pressure is reduced to about 10 -4 Thin films were formed by using the composite material of the present invention by co-evaporation of DTDPPA and molybdenum oxide under vacuum conditions of Pa. In this case, the evaporation rate of DTDPPA was 0.4 nm / s, however molybdenum oxide was evaporated in an amount 1 / 4 of the amount of DTDPPA. The thickness of the film containing DTDPPA and molybdenum oxide was set to 50 nm.

[0214] The measurement results of the absorption spectrum of the composite material of DTDPPA and molybdenum oxide are shown in FIG. 11A . As shown ...

manufacture Embodiment 2

[0215] "Manufacturing Example 2" (DPAB+MoOx)

[0216] Manufacture the composite material containing DPAB and molybdenum oxide in the same manner as Manufacturing Example 1, the difference is to use DPAB (4,4'-bis[N-(4-diphenylaminobenzene) represented by structural formula (93) base)-N-phenylamino]biphenyl) to replace the DTDPPA of Manufacturing Example 1. The measurement results of the absorption spectrum of the composite material containing DPAB and molybdenum oxide are shown in FIG. 11B . As shown in Figure 1 IB, no significant absorption was observed in the visible region (400-700 nm). Further, absorption which was not observed in a single film containing only DPAB or a single film containing only molybdenum oxide was formed near 900 nm. This indicates the formation of voids.

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Abstract

A composite material comprising an organic compound and an inorganic compound represented by general formula (1), wherein, in general formula (1), R1-R24 are the same or different from each other, and represent hydrogen, alkyl, alkoxy, Any of aryl and arylalkyl. A light-emitting element includes the composite material and a light-emitting device, and an electronic device includes the light-emitting element. Compared with organic compounds, the composite material of the present invention has excellent carrier transport performance and excellent carrier injection performance, and has high visible light transmittance. By utilizing this composite material, a current excitation type light emitting element requiring low excitation voltage and having excellent luminous efficiency is obtained. By using the light emitting element, there are provided a light emitting device that consumes low energy and an electronic device including the light emitting device.

Description

technical field [0001] The present invention relates to a composite material formed using an organic compound and an inorganic compound, which has excellent carrier transport performance and excellent carrier injection performance for the organic compound and has high visible light transmittance. Furthermore, the present invention relates to a current excitation type light-emitting element using the composite material, and further relates to a light-emitting device having the light-emitting element and an electronic device including the light-emitting element. Background technique [0002] In recent years, research and development of light-emitting elements using light-emitting organic compounds has been actively conducted. In the basic structure of the light-emitting element described above, a layer containing a light-emitting organic compound is sandwiched between a pair of electrodes. By applying a voltage to the light emitting element, electrons and holes are respective...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50C09K11/06
Inventor 山崎舜平池田寿雄濑尾哲史坂田淳一郎岩城裕司
Owner SEMICON ENERGY LAB CO LTD
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