Ho/Nd-codoped sulfuretted yttrium silicate up-conversion luminescent material, preparation method of luminescent material and organic light emitting diode

A luminescent material and co-doping technology, applied in the directions of luminescent materials, chemical instruments and methods, semiconductor/solid-state device manufacturing, etc., to achieve the effects of being beneficial to industrialized production, easy to control the preparation process, and low processing cost

Inactive Publication Date: 2015-02-11
OCEANS KING LIGHTING SCI&TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the holmium and neodymium co-doped yttrium thiosilicate up-conversion luminescent materials that can be excited by long-wave radiation such as infrared and red and green light have not been reported yet.

Method used

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  • Ho/Nd-codoped sulfuretted yttrium silicate up-conversion luminescent material, preparation method of luminescent material and organic light emitting diode
  • Ho/Nd-codoped sulfuretted yttrium silicate up-conversion luminescent material, preparation method of luminescent material and organic light emitting diode
  • Ho/Nd-codoped sulfuretted yttrium silicate up-conversion luminescent material, preparation method of luminescent material and organic light emitting diode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A kind of preparation method of holmium neodymium co-doped yttrium thiosilicate up-conversion luminescent material, the steps comprise:

[0028] (1) Weighing Y 2 S 3 , SiS 2 , Ho 2 S 3 and Nd 2 S 3 Powder, respectively 1.91mmol, 2mmol, 0.06mmol, 0.03mmol;

[0029] (2) Grind the powder weighed in (1) in a corundum mortar for 40 minutes to mix evenly, then burn at 980°C for 3 hours, then cool to 250°C and keep it for 2 hours, then naturally cool to room temperature Take out the bulk product and crush it to get Y 1.91 SiS 5 : 0.06Ho 3+ , 0.03Nd 3+ Up-converting phosphors.

[0030] Known through spectral scanning, the obtained Y of the present embodiment 1.91 SiS 5 : 0.06Ho 3+ , 0.03Nd 3+ The optimal excitation wavelength of the up-conversion phosphor is 640nm. figure 1 Curve 1 in the figure is the photoluminescence spectrum of the holmium and neodymium co-doped yttrium thiosilicate up-conversion luminescent material in Example 1. Curve 1 shows that at an e...

Embodiment 2

[0033] A kind of preparation method of holmium neodymium co-doped yttrium thiosilicate up-conversion luminescent material, the steps comprise:

[0034] (1) Weighing Y 2 S 3 , SiS 2 , Ho 2 S 3 and Nd 2 S 3 Powder, respectively 1.98mmol, 2mmol, 0.01mmol, 0.01mmol;

[0035] (2) Grind the powder weighed in (1) in a corundum mortar for 20 minutes to mix evenly, then burn at 800°C for 5 hours, then cool to 100°C and keep it for 3 hours, then naturally cool to room temperature Take out the bulk product and crush it to get Y 1.98 SiS5 : 0.01Ho 3+ , 0.01Nd 3+ Up-converting phosphors.

Embodiment 3

[0037] A kind of preparation method of holmium neodymium co-doped yttrium thiosilicate up-conversion luminescent material, the steps comprise:

[0038] (1) Weighing Y 2 S 3 , SiS 2 , Ho 2 S 3 and Nd 2 S 3 Powder, respectively 1.84mmol, 2mmol, 0.1mmol, 0.06mmol;

[0039] (2) Grind the powder weighed in (1) in a corundum mortar for 60 minutes to mix evenly, then burn at 1000°C for 0.5 hour, then cool to 500°C and keep it for 0.5 hour, then cool naturally to room temperature Take out the bulk product and crush it to get Y 1.84 SiS 5 : 0.1Ho 3+ , 0.06Nd 3+ Up-converting phosphors.

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Abstract

The invention provides a Ho / Nd-codoped sulfuretted yttrium silicate up-conversion luminescent material having a chemical formula of Y[2-x-y]SiS5:xHo<3+>,yNd<3+>, wherein x is not less than 0.01 and not more than 0.1 and y is not less than 0.01 and not more than 0.06. The Ho / Nd-codoped sulfuretted yttrium silicate up-conversion luminescent material can be excited by long-wave radiation of infrared rays to green light so as to form an emission peak in a 490nm wavelength region by transition radiation from Ho<3+> ions 5F3 to 5I8, and can be used as a blue-ray luminescent material. The invention further provides a preparation method of the Ho / Nd-codoped sulfuretted yttrium silicate up-conversion luminescent material and an organic light emitting diode which uses the Ho / Nd-codoped sulfuretted yttrium silicate up-conversion luminescent material.

Description

technical field [0001] The invention belongs to the field of semiconductor optoelectronic materials, and in particular relates to a holmium-neodymium co-doped yttrium thiosilicate up-conversion light-emitting material, a preparation method thereof and an organic light-emitting diode. Background technique [0002] Organic light-emitting diode (OLED) is an energy conversion device that uses organic materials as light-emitting materials and can convert applied electrical energy into light energy. It has outstanding performances such as ultra-thin, self-luminous, fast response, low power consumption, etc., and has extremely broad application prospects in display, lighting and other fields. 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/84H01L51/54
Inventor 周明杰陈吉星王平冯小明
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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