Perovskite-organic hybrid laminated light emitting diode and preparation method thereof
A technology of light-emitting diodes and organic hybridization, which is applied in the manufacture of semiconductor/solid-state devices, semiconductor devices, electrical components, etc., can solve the problems of widening electroluminescence spectrum, short life of perovskite LED, etc., and the method is simple and easy to implement. , low cost, suitable for promotion and use
Pending Publication Date: 2022-07-29
SHANGHAI UNIV
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
By designing a charge generation unit with high performance, the perovskite light-emitting diode and the organic light-emitting diode are connected in series, and the stacked structure design is used to combine the advantages of the two, so as to improve the widening of the electroluminescent spectrum of the organic LED and the short life of the perovskite LED. question
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0059] In this example, see figure 1 , a device of a perovskite-organic hybrid stacked light-emitting diode, from bottom to top, a negative electrode 1, a first electron injection layer 2, a first electron transport layer 3, an organic light-emitting layer 4, a first hole transport layer are arranged in order layer 5, charge generation unit 14, second electron transport layer 10, perovskite light-emitting layer 11, second hole transport layer 12, positive electrode 13; charge generation unit 14 includes hole injection layer 6, hole generation layer 7, Electron generation layer 8, second electron injection layer 9;
[0060] The thickness of the negative electrode 1 is 100 nm, and the grid 1 is made of Al;
[0061] The thickness of the first electron injection layer 2 is 1 nm, and the first electron injection layer 2 adopts a LiF film;
[0062] The thickness of the first electron transport layer 3 is 65 nm, and the first electron transport layer adopts a TPBI film;
[0063] T...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses a perovskite-organic hybrid laminated light-emitting diode and a preparation method thereof. A negative electrode, a first electron injection layer, a first electron transport layer, an organic light-emitting layer, a first hole transport layer, a charge generation unit, a second electron transport layer, a perovskite light-emitting layer, a second hole transport layer and a positive electrode are sequentially arranged from top to bottom. The charge generation unit specifically comprises a hole injection layer, a hole generation layer, an electron generation layer and a second electron injection layer. According to the preparation method, each functional layer is prepared by adopting an ultrasonic cleaning method, a solution spin-coating method and a vacuum evaporation method respectively. According to the invention, the perovskite light-emitting diode and the organic light-emitting diode are connected in series by designing the charge generation unit with efficient performance, the advantages of the perovskite light-emitting diode and the organic light-emitting diode are integrated by using the laminated structure design, and the problems that the electroluminescent spectrum of the organic LED is wide and the service life of the perovskite LED is short are solved.
Description
technical field [0001] The invention belongs to the field of display lighting, and relates to a structure design of a perovskite-organic hybrid layered light-emitting diode and a preparation method thereof. Background technique [0002] In recent years, light-emitting diodes (LEDs) have become a new type of environmentally friendly light source products in the field of display and lighting due to their advantages of high efficiency, energy saving, small size, and rich colors. With the advancement of technology, the market demand for display devices such as high color rendering index, wide color gamut, and flexible wearables is increasing day by day. At present, organic light emitting diodes are a relatively mature new type of display technology in the market, and have higher resolution and electro-optical conversion efficiency than traditional liquid crystal displays (LCDs). However, the half-peak width of the luminescence peak of green organic fluorescent molecular materia...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50H01L51/56
CPCH10K50/131H10K71/00
Inventor 杨绪勇罗云王林孔令媚史星宇袁豪李文强
Owner SHANGHAI UNIV