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Organic light emitting diode of alkali metal carbonate-doped organic electron injecting layer

An alkali metal carbonate, light-emitting diode technology, applied in circuits, electrical components, electrical solid devices, etc., to reduce the production cost and improve the effect of the micro-cavity effect

Inactive Publication Date: 2010-05-19
HEBEI UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There is no known alkali metal carbonate (Li 2 CO 3 or Cs 2 CO 3 ) doped organic electron acceptor materials (PTCDA, NTCDA, C60) reports

Method used

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  • Organic light emitting diode of alkali metal carbonate-doped organic electron injecting layer
  • Organic light emitting diode of alkali metal carbonate-doped organic electron injecting layer
  • Organic light emitting diode of alkali metal carbonate-doped organic electron injecting layer

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Embodiment Construction

[0023] The present invention will be specifically described with reference to examples, but the present invention is not limited only to the exemplified examples.

[0024] refer to figure 1 , the organic light emitting diode structure is composed of an anode i, an organic hole injection layer ii, an organic hole transport layer iii, an organic light emitting layer iv, an organic electron injection layer v, and a cathode vi on a glass substrate.

[0025] The glass covered with indium tin oxide (hereinafter referred to as ITO glass, produced by CSG) is used as the anode substrate, the thickness of the ITO layer is 180nm, and the surface resistance is less than 10 ohms per square. Then the ITO glass was cut into small pieces of 4×4cm2, cleaned in acetone, ethanol, and deionized water in an ultrasonic cleaner, each solvent was washed twice for 10 minutes each time, and then dried with nitrogen. The dried ITO glass was treated in a UV-ozone device for 10 minutes. Then put the ITO...

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Abstract

The invention relates to an organic light emitting diode of an alkali metal carbonate-doped organic electron injecting layer, comprising a transparent positive electrode, an organic hole injecting layer, an organic hole transport layer, an organic luminous layer, an organic electron injecting layer and a cathode. The organic electron injecting layer is doped with lithium carbonate or caesium carbonate, and the doping weight is 1:2-20, wherein 1 is the doping weight fraction of alkali metal carbonate. An organic electron acceptor material doped with alkali metal carbonate has very high electrical conductivity and meanwhile has very strong capability of injecting electrons to the organic luminous layer, and therefore, the invention is the organic light emitting diode of an N-type doping material with high performance and low price. The organic light emitting diode is used for emitting visible light and near infrared and is applied to the fields of organic panel display and solid illumination.

Description

technical field [0001] The invention relates to an organic light-emitting diode, in particular to an organic light-emitting diode with an alkali metal carbonate doped organic electron injection layer, which can be applied to the emission of visible light and near-infrared light. Background technique [0002] In April 2009, the Karl Leo research group of Dresden University of Technology in Germany published an article in Nature, reporting that the power efficiency of organic white light at 1000 nits reached the level of fluorescent lamps, which marked that the research on organic white light lighting has entered the essence. sexual assault stage. In addition to using high refractive index substrates and optical coupling output technology, their device features are 1. Only one light-emitting interface is used; 2. All phosphorescent dyes form white light; 3. N-type doped electron transport layer with a thickness of about 210nm is used. To effectively shield the light absorptio...

Claims

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Application Information

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IPC IPC(8): H01L51/50H01L51/54H01L51/56
Inventor 秦大山
Owner HEBEI UNIV OF TECH
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