M-c-n-o fluorescent substance

An M-C-N-O, phosphor technology, applied in the fields of inorganic electroluminescent elements, light-emitting elements or fluorescent tubes, can solve the problems of high crystallinity of BN particles, low oxygen content, low crystallinity (low hexagonal crystallinity, etc.) Toning, efficiency-enhancing effects

Inactive Publication Date: 2010-03-24
HIROSHIMA UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is also described that when ultraviolet light with a wavelength of 365 nm is irradiated on the BN microparticles synthesized by this method, a peak of the emission spectrum is observed at a wavelength of 395 nm, and it is observed that the crystallinity (hexagonal crystallinity) of the luminescent BN microparticles is low , containing a lot of oxygen (11.7wt%), on the other hand, the crystallinity of BN microparticles that did not observe light emission was high, and the oxygen content was low (4.1wt%)

Method used

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Examples

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preparation example Construction

[0128] The preparation method of the transparent electrode layer can adopt vapor phase methods such as sputtering and vacuum deposition. Paste ITO and tin oxide can be produced by coating or screen printing. In addition, it is also possible to form a film by a thermal method such as spray pyrolysis. In this case, the higher the heat resistance of the transparent film, the more preferable.

[0129] (middle layer)

[0130] The dispersion-type EL element may have at least one intermediate layer between the transparent electrode layer and the emitter layer and / or the rear electrode and the dielectric layer. The middle layer can be organic polymer compound or inorganic compound or compound them. The thickness of the intermediate layer is preferably not less than 10 nm and not more than 10 μm, more preferably not less than 100 nm and not more than 1 μm.

[0131] In the case where the material forming the intermediate layer is an organic polymer compound, usable polymer compounds...

Embodiment 1

[0160] Get 1.53g (0.025mol) boric acid (H 3 BO 3 ) and 15.3g (0.25mol) of urea ((NH 2 ) 2 CO) into a 300ml beaker, add 33.3g of ultrapure water, stir with a hot stirrer (rotational speed: 500rpm), and dissolve. Then, 0.5 g of PEG (molecular weight: 20,000) manufactured by Wako Co., Ltd. was added, and stirred again at a rotation speed of 500 rpm with a heating stirrer. The obtained raw material solution was transferred to a crucible, and fired at 800° C. for 30 minutes at a heating rate of 20° C. / minute in a heating furnace.

[0161] figure 1 The ultraviolet excitation emission spectrum results of the phosphor obtained in Example 1 are shown. exist figure 1 , the horizontal axis represents wavelength, and the vertical axis represents PL intensity (luminescence (Photoluminescence: PL) intensity). The same applies to the following drawings.

[0162] figure 2 (No. 1) shows the XPS measurement results of the phosphor obtained in Example 1. From this result, it can be ...

Embodiment 2

[0165] Except that the firing temperature in Example 1 was 900 degreeC, it carried out similarly to Example 1. The content of each element is shown in Table 1, and the peak of the emission wavelength is shown in Table 2. The XPS measurement results of the phosphors are in figure 2 (No.2) shown. The results of ultraviolet excitation luminescence spectroscopy in image 3 shown in .

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Abstract

Disclosed is an M-C-N-O-type fluorescent substance which contains no heavy metal or rare metal, does not require the use of any special activator, and has a high luminous intensity, a controlled peaktop of a luminescence spectrum, and a controlled color. Also disclosed are: a polymer dispersion having excellent environmental adaptability; an inorganic EL element; a light-emitting element; a fluorescent tube; and others, each utilizing the M-C-N-O-type fluorescent substance. Specifically disclosed is an M-C-N-O-type fluorescent substance comprising an element belonging to Group IIIB (M), an element carbon (C), an element nitrogen (N) and an element oxygen (O). In the M-C-N-O-type fluorescent substance, the color can be varied by varying the content of the element carbon (C). A polymer dispersion, an inorganic EL element, a light-emitting element and a fluorescent tube can be manufactured by utilizing the M-C-N-O-type fluorescent substance.

Description

technical field [0001] The invention relates to an M-C-N-O phosphor composed of IIIB group elements (M), carbon (C), nitrogen (N) and oxygen (O), a polymer dispersion containing the M-C-N-O phosphor, a luminescent film or a luminescent body layer and an inorganic electroluminescent element, a light emitting element or a fluorescent tube having the phosphor layer. Background technique [0002] Phosphor is used in fluorescent tubes, fluorescent display tubes, luminous display panels, etc., and its application range is continuously expanding. In addition, recently, attempts have been made to combine LEDs with various display devices such as TV monitors, and research and development of white phosphors that are expected to be widely used are also underway. [0003] On the other hand, fluorescent materials also include natural substances, including various organic and inorganic substances, but in order to improve the desired emission color, peak emission spectrum intensity, econo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/65C09K11/08H01J61/44H01L33/00H05B33/14H01L33/50
CPCH01J61/44C09K11/65H01L33/502C09K11/0883H05B33/145C09K11/08H01L33/00H05B33/14
Inventor 奥山喜久夫矢吹彰广费瑞·依斯坎达荻崇高井淳岩崎秀治
Owner HIROSHIMA UNIVERSITY
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