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Siloxane organic fluorescent powder and preparation method thereof

A siloxane and phosphor technology, applied in luminescent materials, chemical instruments and methods, sustainable buildings, etc., can solve problems such as inability to apply, characteristics cannot meet requirements, etc., to improve optoelectronic characteristics, improve reliability, and improve dispersion. sexual effect

Pending Publication Date: 2020-02-07
INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of organic phosphors to make white light diode elements cannot meet the requirements in these characteristics, and in fact cannot be applied in the industry.

Method used

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  • Siloxane organic fluorescent powder and preparation method thereof
  • Siloxane organic fluorescent powder and preparation method thereof
  • Siloxane organic fluorescent powder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0050] In this example, the organic dye is selected from C545T, such as figure 2 Siloxane (Siloxane), such as figure 1 method to make organic phosphors. Figure 5 The PL excitation spectrum (left) and PL emission spectrum (right) of the siloxane organic phosphor prepared in Example 1 are shown, and the excitation spectrum is the absorption spectrum. At the same time, the PL excitation spectrum (left) and PL emission spectrum (right) of the simple organic dye C545T are also placed for comparison. Such as Figure 5 As shown, the optimum excitation range of the siloxane organic phosphor powder prepared in Example 1 falls within 440-470nm (the emission range of commercial blue light LEDs), and the emitted light wavelength falls within 500-530nm. The conversion efficiency of the green light-emitting siloxane organic phosphor is higher than 95%, and its luminous efficiency is better than that of the organic dye C545T.

example 2

[0052] In this example, DCJTB is selected as the organic dye, using such as figure 2 Siloxane (Siloxane), such as figure 1 The method is made of siloxane organic phosphor. Image 6 The PL excitation spectrum (left) and PL emission spectrum (right) of the siloxane organic phosphor prepared in Example 2 are shown. At the same time, the PL excitation spectrum (left) and PL emission spectrum (right) of the simple organic dye DCJTB are also placed for comparison. Such as Image 6 As shown, the optimum excitation range of the siloxane organic phosphor powder prepared in Example 2 falls within 440-470nm (the emission range of commercial blue light LEDs), and the emitted light wavelength falls within 600-630nm. The conversion efficiency of the red light-emitting siloxane organic phosphor is higher than 90%, and the luminous efficiency is better than that of the organic dye DCJTB.

example 3

[0054] In this example, the organic dye is selected from TPA, such as figure 2 Siloxane (Siloxane), such as figure 1 The method is made of siloxane organic phosphor. Figure 7 The PL excitation spectrum (left) and PL emission spectrum (right) of the siloxane organic phosphor prepared in Example 3 are shown. At the same time, put the PL excitation spectrum (left) and PL emission spectrum (right) of the pure organic dye TPA for comparison. Such as Figure 7 As shown, the optimum excitation range of the siloxane organic phosphor powder prepared in Example 3 falls within 440-470nm (the emission range of commercial blue LEDs), and the emission wavelength falls within 500-530nm. The conversion efficiency of the green light-emitting siloxane organic phosphor is higher than 90%, and the luminous efficiency is better than that of the organic dye TPA.

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Abstract

The invention provides siloxane organic fluorescent powder. The fluorescent powder is an environment-friendly pollution-free material, has an easy manufacturing process, and has high conversion efficiency, high color rendering, a wide color temperature range, and excellent photoelectric characteristics.

Description

technical field [0001] The invention relates to an organic luminescent material, especially a preparation method and application of siloxane organic fluorescent powder. Background technique [0002] Phosphors use electronic transitions to generate fluorescence. When the fluorescent powder is stimulated by light, the electrons in it are excited to a high-level excited state, and then return to the original low-level state, and the energy will be radiated in the form of light. [0003] So far, white light-emitting diodes are still dominated by yellow (inorganic) phosphors excited by blue light-emitting diodes, such as YAG (yttrium aluminum garnet) phosphors paired with blue light-emitting diodes. Although the white light emitting diode produced in this way has high luminous efficiency, the light emitted by the element is mostly cool white light with high color temperature, and contains a lot of blue light; Not conducive to human health. In addition, most white light emittin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/02C09K11/06
CPCC09K11/06C09K11/025Y02B20/00
Inventor 林健辉曾介南林佑帆
Owner INFORMATION TECH