Transparent organic electroluminescent device and preparation method thereof

A luminescent and electromechanical technology, which is applied in the fields of electrical solid-state devices, semiconductor/solid-state device manufacturing, electrical components, etc., can solve problems such as 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 transparent anode with a double-layer structure and an improved hole injection layer and an electron injection layer to solve the problem of the disparity in the efficiency of

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

Experimental program
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Embodiment 1

[0048] Example 1: Preparation of a transparent organic electroluminescent device; the device structure is glass substrate / (3-hydroxypropyl)trimethoxygermane / Mg:Ag (10:1) / NPB:MoO 3 / NPB / TCTA:Ir(ppy) 3 / Bphen / Bphen:LiF:Li2 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 hydroxygermane organic layer and a metal layer sequentially stacked on the glass substrate. The material of the hydroxygermane organic layer is (3-hydroxypropyl) trimethyl Oxygermane is produced by spin coating, the rotation speed is 2000rpm, and the thickness is 4nm; a metal lay...

Embodiment 2

[0053] Example 2: Preparation of a transparent organic electroluminescent device; the device structure is a glass substrate / (3-hydroxyethyl)trimethoxygermane / 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 hydroxygermane organic layer and a metal layer sequentially stacked on the glass substrate. The material of the hydroxygermane organic layer is (3-hydroxyethyl) trimethyl Oxygermane is produced by spin coating with a rotating speed of 5000rpm and a thickness of 2nm; a m...

Embodiment 3

[0058] Embodiment 3: the preparation of a kind of transparent organic electroluminescence device; Device structure is glass substrate / (3-hydroxymethyl)trimethoxygermane / Ba / CBP:V 2 o 5 / CBP / CBP:Ir(mpp y ) 3 / BAlq / 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 hydroxygermane organic layer and a metal layer sequentially stacked on the glass substrate. The material of the hydroxygermane organic layer is (3-hydroxymethyl) trimethyl Oxygermane is produced by spin coating with a rotating speed of 2000rpm and a thickness of 4nm; a...

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Abstract

The invention provides a transparent organic electroluminescent device comprising a glass substrate, and a transparent anode, a hole injection layer, a hole transmission layer, a green luminescent layer, an electron transmission layer, an electron injection layer and a transparent cathode which are arranged on the glass substrate in a laminating way in turn. The transparent anode comprises a hydroxy germane organic matter layer and a metal layer. Material of the hydroxyl germane organic matter layer is at least one type of (3-hydroxy propyl) trimethoxy germane, (3-hydroxy ethyl) trimethoxy germane, (3-hydroxy methyl) trimethoxy germane and O, O, O-trimethyl-hydroxy germane. Material of the metal layer is at least one type of a magnesium silver alloy, a lithium aluminum alloy, barium and calcium. According to the transparent organic electroluminescent device, light emergent efficiency of the anode surface is over 45% than light emergent efficiency of the cathode surface so that luminescent performance is excellent. The invention also provides a preparation method of the 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): H01L51/52H01L51/54H01L51/56
CPCH10K50/171H10K50/17H10K50/81H10K50/816H10K50/00H10K71/00
Inventor 周明杰钟铁涛王平张振华
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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