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An organic light emitting lighting device

A lighting device and organic technology, applied in organic light-emitting devices, organic light-emitting device parameters, electric solid-state devices, etc., can solve problems such as complex preparation process, and achieve the effect of simple preparation process and high light transmittance

Active Publication Date: 2017-10-27
BEIJING VISIONOX TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, what the present invention aims to solve is the problem of complex preparation process of the electroluminescence device with adjustable color in the prior art, and provides a color-tunable organic light-emitting lighting device with simple preparation process

Method used

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Experimental program
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Effect test

Embodiment 1

[0032] This embodiment provides an organic light-emitting lighting device, such as figure 1 As shown, it includes a first electrode layer and a second electrode layer, and the first electrode layer is sequentially stacked with a hole injection layer, a hole transport layer, a first light emitting layer, a second light emitting layer, an electron transport layer, an electron For the injection layer and the second electrode layer, along the direction away from the first electrode, the forbidden band width of each light-emitting layer decreases successively, the forbidden band width of the first light-emitting layer is 2.65eV, and the forbidden band width of the second light-emitting layer The width is 2.18eV.

[0033] The specific structure of the organic light-emitting lighting device is:

[0034] ITO(180nm) / HAT-CN(5nm) / NPB(30nm) / Bepp2(10nm):BD(4%) / TCTA(12nm):Bepp2(100%):TBRb(3%) / DPyPA(15nm) / LiF (0.5nm) / Al (150nm).

[0035] Among them, the ITO (indium tin oxide) layer is th...

Embodiment 2

[0051] This embodiment provides an organic light-emitting lighting device, which includes a first electrode layer and a second electrode layer, and a hole injection layer, a hole transport layer, a first light-emitting layer, a bipolar electrode layer, and a hole injection layer are sequentially stacked on the first electrode layer The barrier layer, the second light-emitting layer, the electron transport layer, the electron injection layer and the second electrode layer, along the direction away from the first electrode, the forbidden band width of each light-emitting layer decreases successively, and the forbidden band width of the first light-emitting layer The width is 2.65eV, and the forbidden band width of the second light-emitting layer is 2.21eV.

[0052] The specific structure of the organic light-emitting lighting device is:

[0053] ITO(180nm) / HAT-CN(5nm) / NPB(30nm) / Bepp2(10nm):BD(4%) / TCTA(4nm):Bepp2(100%) / TCTA(12nm):PO-01(10% ) / DPyPA (15nm) / LiF (0.5nm) / Al (150nm). ...

Embodiment 3

[0057] This embodiment provides an organic light-emitting lighting device, which includes a first electrode layer and a second electrode layer, and a hole injection layer, a hole transport layer, a first light-emitting layer, a bipolar electrode layer, and a hole injection layer are sequentially stacked on the first electrode layer The barrier layer, the second light-emitting layer, the electron transport layer, the electron injection layer and the second electrode layer, along the direction away from the first electrode, the forbidden band width of each light-emitting layer decreases successively, and the forbidden band width of the first light-emitting layer The width is 2.65eV, and the forbidden band width of the second light-emitting layer is 2.15eV.

[0058] The specific structure of the organic light-emitting lighting device is:

[0059] ITO(180nm) / HAT-CN(5nm) / NPB(30nm) / Bepp2(10nm):BD(4%) / TCTA(4nm):Bepp2(100%) / TCTA(12nm):Ir(ppy) 3 (15%): Ir(piq) 3 (1%) / DPyPA (15nm) / LiF...

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Abstract

The organic light-emitting lighting device of the present invention includes a first electrode layer, a light-emitting layer, and a second electrode layer. Along the direction away from the first electrode, the forbidden band width of each light-emitting layer decreases successively; The luminous intensity of the light-emitting layer with a small band width is high, and the luminous intensity of the light-emitting layer with a large forbidden band width gradually increases with the increase of the driving voltage. As the driving voltage increases, since the carrier mobility of the electron transport layer is greater than that of the hole transport layer, the recombination center of electrons and holes moves closer to the side of the hole transport layer, making the luminous color changes happened. The pulse voltage is used to drive the organic light-emitting lighting device, and the adjustment of color and brightness can be realized by adjusting the amplitude and time of the pulse voltage. Moreover, on the basis of the device structure of the existing organic light-emitting lighting device, the luminous color can be adjusted without adding a functional layer and a preparation process, not only the preparation process is simple, but also the light transmittance is high.

Description

technical field [0001] The invention relates to the field of organic electroluminescence, in particular to an organic light-emitting lighting device with adjustable colors. Background technique [0002] Organic Light Emitting Device (English full name is Organic Light Emitting Device, referred to as OLED) is a next-generation lighting technology, which has the advantages of surface emission, low heat dissipation, low energy consumption, lightness, and thinness. More importantly, my country's annual lighting electricity consumption is about 600 billion kWh, accounting for 12% of the country's annual electricity, and lighting emits 598 million tons of carbon dioxide every year. If OLED lighting technology is used to replace the existing lighting technology, 400 billion kWh of electricity can be saved every year, and 399 million tons of carbon dioxide emissions can be reduced, which has important application value. [0003] In the prior art, organic light-emitting lighting dev...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/50H01L51/52
CPCH10K50/125H10K50/16H10K50/15H10K2101/00
Inventor 段炼李曼张国辉刘嵩
Owner BEIJING VISIONOX TECH