Unlock instant, AI-driven research and patent intelligence for your innovation.

Praseodymium and ytterbium co-doped alumina up-conversion luminescent material and preparation method and application thereof

A luminescent material, co-doping technology, applied in luminescent materials, chemical instruments and methods, semiconductor devices, etc.

Inactive Publication Date: 2014-10-29
OCEANS KING LIGHTING SCI&TECH CO LTD +2
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the praseodymium-ytterbium co-doped alumina up-conversion luminescent material that can be excited by long-wave radiation such as infrared and red-green light to emit blue light has not been reported yet.

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Praseodymium and ytterbium co-doped alumina up-conversion luminescent material and preparation method and application thereof
  • Praseodymium and ytterbium co-doped alumina up-conversion luminescent material and preparation method and application thereof
  • Praseodymium and ytterbium co-doped alumina up-conversion luminescent material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0028] The preparation method of the above-mentioned praseodymium-ytterbium co-doped alumina up-conversion luminescent material comprises the following steps:

[0029] Step S11, according to Al 2 o 3 :xPr 3+ ,yYb 3+ The stoichiometric ratio of each element weighs Al 2 o 3 , Pr 2 o 3 and Yb 2 o 3 Powder, wherein, x is 0.01-0.08, and y is 0.01-0.06.

[0030] In this step, the Al 2 o 3 , Pr 2 o 3 and Yb 2 o 3 The molar ratio of each component of the powder is (0.86-0.98): (0.01-0.08): (0.01-0.06).

[0031] In this step, preferably, the Al 2 o 3 , Pr 2 o 3 and Yb 2 o 3 The molar ratio of each component of the powder is 0.92:0.05:0.03.

[0032] Step S13, mixing the powder weighed in step S11 evenly to obtain a precursor.

[0033] In this step, the powder is ground in a corundum bowl for 20 minutes to 60 minutes to obtain a uniformly mixed precursor, preferably for 40 minutes.

[0034] Step S15, burning the precursor at 800° C. to 1000° C. for 0.5 hours to 5 ...

Embodiment 1

[0042] The powder with a purity of 99.99% is selected, and the Al 2 o 3 , Pr 2 o 3 and Yb 2 o 3 Each component of the powder is 0.92mmol, 0.05mmol, 0.03mmol by mole, grind it in a corundum mortar for 40 minutes to make it evenly mixed, then burn it in a muffle furnace at 950°C for 3 hours, then cool it down to 250°C and keep it warm After 2 hours, cool to room temperature with the furnace and take it out to obtain a bulk material, which can be crushed to obtain the general chemical formula of Al 2 o 3 : 0.05Pr 3+ , 0.03Yb 3+ Up-converting phosphors.

[0043] The process of making organic light-emitting diodes

[0044] The sequentially stacked substrate 1 uses soda-lime glass, the cathode 2 uses a metal Ag layer, and the organic light-emitting layer 3 uses Ir(piq)2(acac), the Chinese name is bis(1-phenyl-isoquinoline)(acetylacetonate) iridium (III), the transparent anode 4 uses indium tin oxide ITO, and the transparent encapsulation layer 5 is polytetrafluoroethylene....

Embodiment 2

[0049] The powder with a purity of 99.99% is selected, and the Al 2 o 3 , Pr 2 o 3 and Yb 2 o 3 Each component of the powder is 0.98mmol, 0.01mmol, and 0.01mmol by mole, grind it in a corundum mortar for 20 minutes to mix it evenly, then burn it in a muffle furnace at 800°C for 3 hours, then cool it to 100°C and keep it warm After 3 hours, it is taken out with the furnace cooling to room temperature to obtain a bulk material, which can be crushed to obtain the general chemical formula of Al 2 o 3 : 0.01Pr 3+ , 0.01Yb 3+ up-converting phosphors.

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

No PUM Login to View More

Abstract

A praseodymium and ytterbium co-doped alumina up-conversion luminescent material has the following chemical general formula of Al2O3:xPr<3+>, yYb <3+>, wherein x is 0.01-0.08 and y is 0.01-0.06. In a photoluminescence spectrum of the praseodymium and ytterbium co-doped alumina up-conversion luminescent material, the excitation wavelength of the praseodymium and ytterbium co-doped alumina up-conversion luminescent material is 578 nm, in a wavelength region of 483 nm, luminescence peaks can be produced by transition radiation from <3>P0 to <3>H4 of Pr<3+> ions, and the praseodymium and ytterbium co-doped alumina up-conversion luminescent material can be used as a blue light luminescent material. The invention also provides a preparation method of the praseodymium and ytterbium co-doped alumina up-conversion luminescent material, and organic light-emitting diodes using the praseodymium and ytterbium co-doped alumina up-conversion luminescent material.

Description

technical field [0001] The invention relates to a praseodymium-ytterbium co-doped alumina up-conversion luminescent material, a preparation method and an organic light-emitting diode. Background technique [0002] Organic light-emitting diodes (OLEDs) have been widely used due to their simple component structure, cheap production cost, self-luminescence, short response time, and bendability. However, it is difficult to obtain stable and efficient OLED blue light materials, which greatly limits the development of white light OLED devices and light source industries. [0003] Up-conversion fluorescent materials can emit visible light and even ultraviolet light under the excitation of long-wave (such as infrared) radiation, and have broad application prospects in the fields of optical fiber communication technology, fiber amplifier, three-dimensional display, biomolecular fluorescent labeling, and infrared radiation detection. However, the upconversion luminescent material of ...

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
no application Login to View More
IPC IPC(8): C09K11/64H01L33/50
Inventor 周明杰陈吉星王平黄辉
Owner OCEANS KING LIGHTING SCI&TECH CO LTD