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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 light output from both sides of the transparent organic electroluminescent device. , The problem of carrier injection difficulties, the light output efficiency of the anode side of the device reaches more than 45% of the light output 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)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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