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Hemispherical shell organic electroluminescence device and preparation method thereof

A hemispherical shell and electroluminescence technology, which is applied in the manufacture of semiconductor/solid-state devices, semiconductor devices, electric solid-state devices, etc. Transverse waveguide loss can not be taken into account and other problems, to achieve the effect of improved light extraction efficiency and simple preparation process

Inactive Publication Date: 2013-02-13
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these methods generally make the preparation process of the device more cumbersome, and make the emission spectrum angle-dependent. Often, the light extraction efficiency of organic electroluminescent devices is not improved enough, and the total reflection and transverse waveguide loss of electroluminescent devices are often not enough. take into account

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  • Hemispherical shell organic electroluminescence device and preparation method thereof
  • Hemispherical shell organic electroluminescence device and preparation method thereof
  • Hemispherical shell organic electroluminescence device and preparation method thereof

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preparation example Construction

[0038] The preparation method of the above-mentioned hemispherical shell-shaped organic electroluminescent device, such as figure 2 shown, including the following steps:

[0039] S1. The hemispherical substrate (eg, glass) is ultrasonically cleaned with purified water, acetone, ethanol, etc. for 15 minutes in sequence, and dried after cleaning;

[0040] S2. Using a magnetron sputtering process, the hemispherical shell-shaped base is placed in a vacuum chamber of a magnetron sputtering device, and an anode layer is sputtered on the inner surface of the hemispherical shell-shaped base to obtain a hemispherical shell-shaped anode base; Next, the glass coated with the anode layer is spin-coated with photoresist, exposed, developed, etched with aqua regia, and etched into the required pattern and size, and then the etched conductive glass is cleaned, followed by pure water, acetone, Ultrasonic cleaning with ethanol etc. for 15 minutes each, and after cleaning, perform oxygen plas...

Embodiment 1

[0046] The structure of the hemispherical shell-shaped organic electroluminescent device of the present embodiment is: glass / ITO / m-MTDATA:F4-TCNQ / TAPC / TCTA:Ir(ppy) 3 / Bphen / Bphen:Cs 2 CO 3 / Mg:Ag.

[0047] The preparation steps of the hemispherical shell-shaped organic electroluminescent device of this embodiment are as follows:

[0048] 1. Clean the hemispherical glass substrate with an inner diameter of 5mm and a thickness of 2mm with pure water, acetone, ethanol, etc. for 15 minutes, and then dry it;

[0049] 2. Put the hemispherical glass substrate into the organic vacuum chamber of the magnetron sputtering equipment, sputter a layer of 150nm thick ITO anode layer; then spin-coat the glass coated with the ITO anode layer with photoresist, expose and develop , Aqua regia etching, etch into the required pattern and size, then clean the etched conductive glass, and then use pure water, acetone, ethanol, etc. to ultrasonically clean each for 15 minutes, and then perform oxy...

Embodiment 2

[0054] The structure of the hemispherical shell-shaped organic electroluminescent device of the present embodiment is: glass / FTO / TPD:TCNQ / TPD / TCTA:Ir(ppy) 3 / PBD / PBD:LiF / Ag.

[0055] The preparation steps of the hemispherical shell-shaped organic electroluminescent device of this embodiment are as follows:

[0056] 1. The hemispherical glass substrate with an inner diameter of 5 mm and a thickness of 4 mm was ultrasonically cleaned with purified water, acetone, ethanol, etc. for 15 minutes, cleaned and dried;

[0057] 2. Put the hemispherical glass substrate into the organic vacuum chamber of the magnetron sputtering equipment, sputter a layer of FTO anode layer with a thickness of 180nm; then spin-coat the glass coated with the FTO anode layer with photoresist, expose and develop , Aqua regia etching, etch into the required pattern and size, then clean the etched conductive glass, and then use pure water, acetone, ethanol, etc. to ultrasonically clean each for 15 minutes, an...

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Abstract

The invention belongs to the field of photoelectric devices, and discloses a hemispherical shell organic electroluminescence device and a preparation method thereof. The hemispherical shell organic electroluminescence device comprises a hemispherical shell base, wherein an anode layer, a p-type doped hole transport layer, an electron blocking layer, a luminescent layer, a hole blocking layer, an n-type doped electron transport layer and a cathode layer are stacked on the internal surface of the hemispherical shell base in sequence. The hemispherical shell organic electroluminescence device is hemispherical, total internal reflection loss caused by the difference between refractive indexes of the luminescent layer and air can be refracted through a curved surface, and the transverse waveguide loss of an organic layer can be captured, so that light transmitting efficiency is greatly improved; and meanwhile, the hemispherical shell organic electroluminescence device does not have angle dependence, and the preparation process is simple.

Description

technical field [0001] The invention relates to the field of optoelectronic devices, in particular to a hemispherical shell-shaped organic electroluminescent device and a preparation method thereof. Background technique [0002] In 1987, Tang and VanSlyke of Eastman Kodak Company in the United States reported a breakthrough in the research of organic electroluminescence. For the first time, they used the vacuum evaporation technology to combine the aromatic diamine with hole transport property and the 8-hydroxyquinoline aluminum (Alq) with high fluorescence efficiency and electron transport property. 3 ) combined to prepare a double-layer organic electroluminescent device. Under the driving voltage of 10V, the device emits green light with a brightness of up to 1000cd / m 2 , the efficiency reaches 1.5lm / W, and the life span exceeds 1000 hours. This milestone work has made people see a bright prospect for the practical and commercialization of electroluminescent devices. A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/52H01L51/50H01L51/56
Inventor 周明杰王平
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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