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Hybrid white light organic electroluminescence device

An electroluminescent device, white light technology, applied in the direction of electric solid-state devices, electrical components, semiconductor devices, etc., can solve the problems of complex device structure, high process cost, and inapplicability of new materials

Inactive Publication Date: 2016-05-18
GUANG ZHOU NEW VISION OPTO ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method of introducing a spacer layer makes the device structure complex and the process cost is high
With the commercialization of blue fluorescent materials with high triplet energy levels, this structure is not suitable for new materials.

Method used

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  • Hybrid white light organic electroluminescence device
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Embodiment 1

[0036] A hybrid white light organic electroluminescence device is provided with a substrate, an anode, a cathode and a functional layer between the anode and the cathode, the functional layer at least comprises a blue fluorescent layer and at least one layer of phosphorescence that forms complementary colors with blue light a light emitting layer and at least one charge generation layer. The hybrid white light organic electroluminescence device has at least one set of spaced structures, and the spaced structure refers to a structure in which the blue fluorescent layer and the phosphorescent light-emitting layer are separated by at least one charge generation layer.

[0037] In the hybrid white light organic electroluminescent device, the triplet energy level of at least one blue fluorescent layer is higher than the triplet energy level of at least one phosphorescent light-emitting layer.

[0038] In the hybrid white light organic electroluminescence device, the singlet exciton...

Embodiment 3

[0051] A hybrid white light organic electroluminescence device, as shown in FIG. 1, is provided with a substrate 01, an anode 02, a cathode 06 and a functional layer between the anode 02 and the cathode 06, the functional layer includes a blue fluorescent layer 03 , a phosphorescent light-emitting layer 05 and a charge generation layer 04 forming complementary colors with blue light. The hybrid white light organic electroluminescence device has a set of spaced structures, and in the spaced structures, the blue fluorescent layer 03 and the phosphorescent light-emitting layer 05 are separated by a charge generation layer 04 .

[0052] The triplet energy level of the blue fluorescent layer 03 is higher than that of the phosphorescent light-emitting layer 05 . In this hybrid white light organic electroluminescence device, the singlet excitons generated in the blue fluorescent layer 03 are captured and utilized by the blue light-emitting body, and the triplet excitons generated in ...

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Abstract

A hybrid white light organic electroluminescence device comprises a base plate, an anode, a cathode and an organic functional layer, wherein the organic functional layer is arranged between the anode and the cathode and provided with at least one blue fluorescent layer, at least one phosphorescence light emitting layer which forms a complementary color of the blue light, and at least one charge generation layer; the device also comprises at least one group of a spacer structure wherein the blue fluorescent layer and the phosphorescence light emitting layer are spaced by a charge generation layer; the triplet state energy level of at least one of the blue fluorescent layers is higher than the triplet state energy level of at least one of the phosphorescence light emitting layers. According to the hybrid white light organic electroluminescence device, the triplet state energy level of the blue fluorescent layers is higher than the triplet state energy level of the phosphorescence light emitting layers; singlet excitons and triplet excitons of the device can be effectively used; and the charge generation layer spacing design is adopted so that the hybrid white light organic electroluminescence device has advantages such as high efficiency, long service life, and good stability.

Description

technical field [0001] The invention relates to the technical field of white light organic electroluminescence devices used for display and illumination, in particular to a hybrid white light organic electroluminescence device. Background technique [0002] White OLED (Organic Light Emitting Diode) is a flat light-emitting device, with the advantages of ultra-thin, large shape selection, suitable as a large-area light source, no heat dissipation, simple processing, etc., and is considered to be the most ideal lighting source; at the same time, white OLED can also replace Ordinary LED light source, as the backlight source of modern mainstream liquid crystal display, realizes ultra-thin liquid crystal display. White light OLEDs can also be combined with color filters to achieve color OLED displays. Therefore, white OLEDs have attracted more and more attention from academia and industry. [0003] White light OLEDs can be divided into single-emitting layer devices and multi-em...

Claims

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Application Information

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IPC IPC(8): H01L51/50H01L51/52H01L51/54
CPCH10K85/00H10K50/00H10K50/11
Inventor 邹建华刘佰全李洪濛徐苗陶洪王磊彭俊彪
Owner GUANG ZHOU NEW VISION OPTO ELECTRONICS TECH
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