White organic light-emitting diode and manufacturing method thereof

An electroluminescent device, organic technology, applied in the direction of organic semiconductor devices, electric solid devices, semiconductor/solid device manufacturing, etc., can solve the problems of high working current and low color rendering index

Inactive Publication Date: 2014-10-01
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

However, traditional white organic electroluminescent devices have the problems of low color rendering index and high operating current.

Method used

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  • White organic light-emitting diode and manufacturing method thereof
  • White organic light-emitting diode and manufacturing method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0066] Such as figure 2 As shown, a method for preparing a white light organic electroluminescent device according to an embodiment includes the following steps:

[0067] Step S310: Making a micro pattern composed of a plurality of spaced protrusions on one surface of the refractive layer, pressing the micro-patterned surface of the refractive layer with the glass substrate, and then depositing on the other surface of the refractive layer to form a transparent Conductive layer to obtain anode layer, wherein multiple gaps are formed between the refractive layer and the glass substrate.

[0068] Preferably, before pressing the micro-patterned surface of the refractive layer with the glass substrate, it further includes the steps of sequentially cleaning and surface activation treatment on the glass substrate; the cleaning step is: sequentially using detergent, deionized water, and Ultrasonic cleaning with acetone and ethanol, and then drying. In a specific embodiment, each wash is...

Embodiment 1

[0087] The structure of the white light organic electroluminescent device of this embodiment is: ITO / PU / ITO / NPB:MoO 3 / NPB / TCTA:Ir(MDQ) 2 (acac) / Bphen / MoO 3 / NPB:MoO 3 / NPB / TCTA:Ir(ppy) 3 / CBP:Firpic:MoO 3 / Bphen / Bphen:Cs 2 CO 3 / Ag.

[0088] The preparation of the white light organic electroluminescent device of this embodiment is as follows:

[0089] (1) The ITO glass substrate with a thickness of 100 nanometers was cleaned with detergent, deionized water, acetone and ethanol in sequence. Each cleaning was performed for 5 minutes, stopped for 5 minutes, repeated 3 times, and then dried in an oven. The dried glass substrate is subjected to surface activation treatment; on one surface of the refractive layer, a micropattern composed of a plurality of spaced protrusions is made, each protrusion has a width of 5 microns and a height of 5 microns, and two adjacent The distance between the protrusions is 5 microns; press the surface of the refractive layer with micro-patterns and the I...

Embodiment 2

[0093] The structure of the white light organic electroluminescent device of this embodiment is: ITO / PU / AZO / TCTA:WO 3 / TCTA / mCP:PQIr / BCP / V 2 O 5 / TCTA:WO 3 / TCTA / mCP:Ir(ppy) 2 (acac) / mCP:FIr6:V 2 O 5 / BCP / BCP:CsF / Al.

[0094] The preparation of the white light organic electroluminescent device of this embodiment is as follows:

[0095] (1) The ITO glass substrate with a thickness of 100 nanometers was cleaned with detergent, deionized water, acetone and ethanol in sequence. Each cleaning was performed for 5 minutes, stopped for 5 minutes, repeated 3 times, and then dried in an oven. The dried glass substrate is subjected to surface activation treatment; on one surface of the refractive layer, a micro pattern composed of a plurality of spaced protrusions is made, each protrusion has a width of 10 micrometers and a height of 10 micrometers. The distance between the protrusions is 10 microns; the micro-patterned surface of the refractive layer is pressed against the ITO glass substrat...

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Abstract

A white organic light-emitting diode comprises an anode layer, a first hole injection layer, a first hole transmission layer, a red light-emitting layer, a first electron transmission layer, a charge generation layer, a second hole injection layer, a second hole transmission layer, a green light-emitting layer, a blue light-emitting layer, a second electron transmission layer, an electron injection layer and a cathode layer, wherein the anode layer, the first hole injection layer, the first hole transmission layer, the red light-emitting layer, the first electron transmission layer, the charge generation layer, the second hole injection layer, the second hole transmission layer, the green light-emitting layer, the blue light-emitting layer, the second electron transmission layer, the electron injection layer and the cathode layer are stacked in sequence. The anode layer comprises a glass substrate, a refraction layer and a transparent conducting layer, wherein the glass substrate, the refraction layer and the transparent conducting layer are stacked in sequence. The surface, opposite to the glass substrate, of the refraction layer is provided with a micro-pattern composed of a plurality of protrusions arranged at intervals, and therefore a plurality of gaps are formed between the refraction layer and the glass substrate. Materials of the blue light-emitting layer comprise the host blue-light material, the slave blue-light material and the charge generation material, wherein the slave blue-light material and the charge generation material are doped in the host blue-light material together. The white organic light-emitting diode has a higher color rendering index and a lower working current. The invention further relates to a manufacturing method of the white organic light-emitting diode.

Description

Technical field [0001] The invention relates to the field of electronic devices, in particular to a white light organic electroluminescent device and a preparation method thereof. Background technique [0002] White light organic electroluminescent devices (OLED, Organic Light-Emitting Diode) have some unique advantages: (1) OLED is a diffused surface light source, and does not require an additional light guide system like light-emitting diodes (LED) to obtain a large area White light source; (2) Due to the diversity of organic light-emitting materials, OLED lighting can be designed with the required color of light according to needs. At present, both small molecule OLEDs and polymer organic light-emitting diodes (PLED) have obtained the white light spectrum (3) OLED can be made on a variety of substrates such as glass, ceramic, metal, plastic and other materials, which makes the design of the lighting source more free; (4) The method of making OLED display The OLED lighting pan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/52H01L51/54H01L51/56
CPCH10K85/615H10K85/342H10K85/6572H10K50/131H10K50/858H10K2102/00H10K71/00
Inventor 周明杰钟铁涛王平陈吉星
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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