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Transparent organic electroluminescent device and preparation method thereof

An electroluminescence, electromechanical technology, applied in the fields of electric solid state devices, semiconductor/solid state device manufacturing, electrical components, etc., which can solve the problems of difficulty in carrier injection and disparity in light extraction efficiency.

Inactive Publication Date: 2015-04-15
OCEANS KING LIGHTING SCI&TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on the above problems, the present invention provides a transparent organic electroluminescent device, which adopts a double-layer transparent anode and an improved hole injection layer and an electron injection layer to solve the problem of the disparity in the efficiency of light output from both sides of the transparent organic electroluminescent device. The problem of carrier injection is difficult, the light extraction efficiency of the anode side of the device reaches more than 55% of the light extraction efficiency of the cathode side, and the luminous performance is excellent

Method used

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  • Transparent organic electroluminescent device and preparation method thereof
  • Transparent organic electroluminescent device and preparation method thereof
  • Transparent organic electroluminescent device and preparation method thereof

Examples

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Embodiment 1

[0048] Example 1: Preparation of a transparent organic electroluminescent device; the device structure is glass substrate / (3-hydroxypropyl)trimethoxysilane / Mg:Ag (10:1) / NPB:MoO 3 / NPB / TCTA:Ir(ppy) 3 / Bphen / Bphen:LiF:Li 2 SO 4 / ITO. Its preparation method is as follows:

[0049] (1) Provide glass substrate: take a piece of white glass, wash it with detergent, deionized water, acetone, and ethanol in sequence. This operation is carried out in an ultrasonic cleaning machine. Each washing takes 5 minutes and stops for 5 minutes. , Repeat the method 3 times respectively, and then dry it in an oven for use.

[0050] (2) Prepare a transparent anode on the glass substrate. The transparent anode includes a hydroxysilane organic layer and a metal layer sequentially stacked on the glass substrate. The material of the hydroxysilane organic layer is (3-hydroxypropyl) trimethoxy Silane, produced by spin coating, with a rotational speed of 2000rpm and a thickness of 4nm; a metal layer wa...

Embodiment 2

[0053] Example 2: Preparation of a transparent organic electroluminescent device; the device structure is a glass substrate / (3-hydroxyethyl)trimethoxysilane / Li:Al(0.6%Li) / TCTA:WO 3 / TCTA / mCP:Ir(ppy) 2 (acac) / BCP / BCP:LiN 3 :Na 2 SO 4 / ITO. Its preparation method is as follows:

[0054] (1) Provide glass substrate: take a piece of white glass, wash it with detergent, deionized water, acetone, and ethanol in sequence. This operation is carried out in an ultrasonic cleaning machine. Each washing takes 5 minutes and stops for 5 minutes. , Repeat the method 3 times respectively, and then dry it in an oven for use.

[0055] (2) Prepare a transparent anode on the glass substrate. The transparent anode includes a hydroxysilane organic layer and a metal layer sequentially stacked on the glass substrate. The material of the hydroxysilane organic layer is (3-hydroxyethyl)trimethoxy Silane is produced by spin coating with a rotating speed of 5000rpm and a thickness of 2nm; a metal la...

Embodiment 3

[0058] Embodiment 3: the preparation of a kind of transparent organic electroluminescent device; Device structure is glass substrate / (3-hydroxymethyl)trimethoxysilane / Ba / CBP:V 2 o 5 / CBP / CBP:Ir(mppy) 3 / BAlq:Li 3 N:K 2 SO 4 / ITO. Its preparation method is as follows:

[0059] (1) Provide glass substrate: take a piece of white glass, wash it with detergent, deionized water, acetone, and ethanol in sequence. This operation is carried out in an ultrasonic cleaning machine. Each washing takes 5 minutes and stops for 5 minutes. , Repeat the method 3 times respectively, and then dry it in an oven for use.

[0060] (2) Prepare a transparent anode on the glass substrate. The transparent anode includes a hydroxysilane organic layer and a metal layer sequentially stacked on the glass substrate. The material of the hydroxysilane organic layer is (3-hydroxymethyl)trimethoxy Silane is produced by spin coating with a rotating speed of 2000rpm and a thickness of 4nm; a metal layer is ...

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Abstract

The invention discloses a transparent organic electroluminescent device. The transparent organic electroluminescent device comprises a glass substrate, and a transparent anode, a cavity implantation layer, a cavity transmission layer, a green luminescent layer, an electron transmission layer, an electron injecting layer and a transparent cathode which are successively laminated on the glass substrate. The transparent anode comprises a hydroxysilane organic layer and a metal layer; the material of the hydroxysilane organic layer comes from at least one of (3-mercaptopropyl)trimethoxysilane, (3-mercaptoethyl)trimethoxysilane, (3-mercaptomethyl) trimethoxysilane and O,O,O-trimethyl-mercaptosilane; the material of the metal layer comes from at least one of a magnesium-silver alloy, a lithium-aluminum alloy, barium and calcium; and the material of the transparent cathode is indium tin oxide. According to the transparent organic electroluminescent device provided by the invention, the light emitting efficiency of an anode surface reaches more than 55% of the light emitting efficiency of a cathode surface, and the luminescence performance is excellent. The invention further discloses a preparation method of a transparent organic electroluminescent device.

Description

technical field [0001] The invention belongs to the field of organic electroluminescence, and in particular relates to a transparent organic electroluminescence device and a preparation method thereof. Background technique [0002] Organic electroluminescent devices (OLEDs) have some unique advantages: (1) OLEDs are diffuse surface light sources, and do not require an additional light guide system to obtain large-area white light sources like light-emitting diodes (LEDs); (2) Due to the diversity of organic light-emitting materials, OLED lighting can design the required color of light according to needs; (3) OLED can be made on a variety of substrates such as glass, ceramics, metals, plastics and other materials, which makes it easier to design lighting sources Freedom; (4) The OLED lighting panel is made by making OLED display, which can display information while lighting; (5) OLED can also be used as a controllable color in the lighting system, allowing users to adjust the...

Claims

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Application Information

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IPC IPC(8): H01L51/50H01L51/52H01L51/54H01L51/56
Inventor 周明杰钟铁涛王平张振华
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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