Inorganic perovskite quantum-dot light-emitting diode (LED) capable of emitting light from two surfaces and fabrication method of inorganic perovskite quantum-dot LED

A double-sided light-emitting, quantum dot technology, applied in the direction of organic semiconductor devices, semiconductor/solid-state device manufacturing, electric solid-state devices, etc., to achieve high transparency and improved color purity

Inactive Publication Date: 2017-08-29
JILIN UNIV
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  • Inorganic perovskite quantum-dot light-emitting diode (LED) capable of emitting light from two surfaces and fabrication method of inorganic perovskite quantum-dot LED
  • Inorganic perovskite quantum-dot light-emitting diode (LED) capable of emitting light from two surfaces and fabrication method of inorganic perovskite quantum-dot LED
  • Inorganic perovskite quantum-dot light-emitting diode (LED) capable of emitting light from two surfaces and fabrication method of inorganic perovskite quantum-dot LED

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[0031] Below in conjunction with the accompanying drawings, further illustrate the highly transparent, double-sided light-emitting inorganic perovskite quantum dot LED of the present invention and the embodiment of its preparation, and provide the implementation process and test and inspection results, but the protection scope of the present invention does not Limited to the following examples.

[0032] 1. The preparation scheme of the inorganic perovskite quantum dot LED with double-sided light emission of the present invention is as follows:

[0033] The first step, preparation of CsPbBr 3 Green light quantum dots.

[0034] The preparation of the oleate precursor of cesium: cesium carbonate (Cs 2 CO 3 , 0.8g), oleic acid (Oleic acid, referred to as OA, 2.5mL) and 1-octadecene (1-Octadecene, referred to as ODE, 30mL) were mixed into a three-necked bottle. The bottle was dried at 120°C for 1 hour, followed by heating to 150°C until all Cs 2 CO 3 dissolve.

[0035] CbBr ...

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Abstract

The invention relates to the technical field of display, and in particular to an organic perovskite quantum-dot light-emitting diode (LED) capable of emitting light from two surfaces and a fabrication method of the inorganic perovskite quantum-dot LED. The LED comprise graphene (1), PEDOT:PSS (2), PVK (3), a CsPbBr3 quantum dot (4), ZnO (5) and ITO (6). The fabrication method of the LED mainly comprises the steps of fabricating an inorganic halide perovskite quantum dot and a ZnO quantum dot; sequentially spin-coating a PEDOT:PSS solution, a PVK solution and the fabricated inorganic halide perovskite quantum dot on a graphene transparent electrode; spin-coating the fabricated ZnO quantum dot solution on an inorganic halide perovskite quantum-dot layer, and finally fabricating an ITO electrode layer on the ZnO layer by magnetron sputtering to obtain the perovskite quantum-dot LED capable of emitting light from the two surfaces. An inorganic caesium lead halide perovskite quantum dot is used as a light-emitting layer, and the transparent electrode ITO and the graphene are respectively used as a negative electrode and a positive electrode. The fabricated organic perovskite quantum-dot LED has the advantages of high color purity and high transparency, and light is simultaneously emitted from two sides of the device.

Description

technical field [0001] The invention relates to the field of display technology, and relates to the preparation of a novel quantum dot light-emitting diode, in particular to a double-sided light-emitting inorganic perovskite quantum dot LED and a preparation method thereof. Background technique [0002] Light-Emitting Diode (LED) is currently the most popular material and technology in the field of lighting and display. With the advancement of science and technology, transparent display technology has become the development trend of future display, so there is a higher demand for performance parameters such as color purity, brightness, and luminous efficiency of LEDs. [0003] Organic Light-Emitting Diode (OLED) is the most mentioned in the field of transparent display technology at present. Transparent display technology based on OLED develops very rapidly and becomes a research hotspot. However, OLED uses organic materials, so the color purity is not high, and its pure co...

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Application Information

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IPC IPC(8): H01L51/50H01L51/52H01L51/54H01L51/56
CPCH10K50/115H10K50/81H10K50/828H10K2102/00H10K71/00
Inventor 张宇陈真吴华于伟泳张铁强
Owner JILIN UNIV
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