TW200914581A - Oxide light emission body - Google Patents

Abstract

To provide an oxide light emission body performing light emission with high level at a UV ray area of 200-300 nm by exciting it by an electron ray or a UV ray. The light emission body comprises an oxide of an element in Group 2A of the Periodic table including a different kind of metal element or a semimetal element and has a light emission peak at a UV ray area of 200-300 nm based on excitation by an electron ray or a UV ray. Preferably, a ratio of the different kind of metal element or the semimetal element relative to the element in Group 2A of the Periodic table is 0.0001-1 mol%, the element in Group 2A of the Periodic table is Mg, and the different kind of metal element is Al.

Description

200914581 IX. Description of the invention: [Technical field to which the invention pertains] The present invention relates to a method in which an ultraviolet light region is 200 to 3 〇〇 nm by excitation of a scorpion beam or ultraviolet light by Ray name A > ki_ , 1 Say & I # has an oxide illuminant that emits a spike. [Prior Art] At present, in a plasma display panel (PDP), a phosphor used as a light-emitting material is subjected to a wave emitted by a discharge in a helium gas in a vacuum state, a vacuum ultraviolet light having an electron length of 147 nm, an electron beam, or the like. Excitation and glow. However, since the practical use of the campsite for PDP is low in luminous intensity by a vacuum ultraviolet beam or an electron beam having a wavelength of M7 nm, it is expected that the luminous efficiency of the PDP can be improved. In addition, in the PDP, the i-outer line or the electron beam emitted by the discharge gas existing in the space of the light-emitting unit is directed in all directions, but is directed toward the mine and the other than the phosphor. Most of the ultraviolet rays or electron beams emitted by the constituent materials of the space are not utilized for the excitation of the phosphor to become a loss. A technique for effectively utilizing such a radiation ultraviolet ray or electron beam and improving the luminous efficiency of a PDP is disclosed in the patent document, which is a film oxidized town layer which has been conventionally provided as a protective layer on a dielectric layer. Further, a crystalline magnesium oxide layer containing granular magnesium oxide crystals is further provided. The oxygen-declining crystal is excited by an electron beam to perform cathodoluminescence (Cathode Lumin (10)_) having a peak in the wavelength region. Specifically, it is described that the average particle diameter is 2_~from (10). ~〇4 5 200914581 氡 氡 氡 单 单 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该Therefore, although not only the luminous efficiency of the PDP can be improved, but also the discharge characteristics such as discharge delay can be improved, the vapor phase magnesia single crystal disclosed in Patent Reading 1 has not yet been emitted in the wavelength region of 200 to 300 nm. Achieving a sufficient level and expecting to be improved. On the other hand, in Patent Document 2, when ultraviolet rays having a wavelength of 2 or less, for example, are irradiated to a protective film containing a small amount of disorder in the oxidized town, it is possible to emit ultraviolet rays having a peak at a wavelength of 315 nm, but It has not been known so far that such an oxide illuminant capable of having a light-emitting peak at a wavelength of 2GG to 3GGnm by containing a heterogeneous metal element or a metalloid element. [Patent Document 1] Japanese Patent No. 3842276 Patent Document 2: JP-A-2002-2344-64 SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object thereof is to provide an excitation by an electron beam or ultraviolet rays. An oxide illuminant that emits a high degree of light in an ultraviolet region of 2 〇〇 to 3 〇〇 nm. In order to solve the above problems, the present inventors have repeatedly conducted various studies and found that by causing an oxide such as magnesium or the like to contain an isometallic metal or a metalloid element, it can be excited by electron beam or ultraviolet light. The present invention has been completed by performing light emission at a high wavelength of "200 to 3 G () nm. That is, the present invention relates to an illuminant having an illuminating peak in the outer region of 200 to 3 〇〇 nm by excitation of an electron beam or ultraviolet ray 6 200914581 7 , which is characterized by containing a heterogeneous metal element or class. The metal element is composed of an oxide of the Group 2A element of the periodic table. >The ratio of the heterogeneous metal element or metalloid element to the element of the 2A group of the periodic table in the Che Kung Jia 4 6 hai oxide is G.00G1~1 mol%. Preferably, the Group 2A element of the periodic table is Mg, Ca, Sr or Ba. More preferably, the Group 2A element of the periodic table is Mg. Preferably, the heterogeneous metal element or metalloid element is selected from the group consisting of u,

Na A Bu Si ' K, Sc, Ti, V, Cr, Mn, Fe, Co, Ni,

At least the group consisting of Cu, Zn, Ga, As, Rb, γ, excitation, M〇, Tc, Ru, ^, ^, h, ΐΓ, AU, 丁, Bi, and At! Kind. More preferably, the heterogeneous metal element is A1. Preferably, the oxide has a purity of 99.9% by mass or more when the heterogeneous metal element and the element other than the metal element are impurities. Preferably, the oxide is in the form of particles, and the shape observed by the scanning electron microscope is a powder composed of primary particles of the iL cube. More preferably, the oxide powder is obtained by a laser diffraction scattering particle size distribution and has a cumulative 5 〇 = particle diameter (〇50) of more than O.Um. Further, more preferably, the oxide powder has a crystallite diameter of 500 A or more. Preferably, the oxide is produced by a liquid phase process. Further, the present invention relates to an optical element comprising the above-described illuminant. 200914581 According to the invention, the illuminator is in the ultraviolet region. It is possible to provide an oxide which emits light at a very high level by excitation of an electron beam or an ultraviolet ray of 200 to 30 〇 nm. [Embodiment] The illuminant of the present invention is excited by an electron beam or ultraviolet rays, thereby performing ultraviolet ray irradiation. The wavelength of the region is 2 〇〇 ~ 3 〇〇 nm (especially; ~ 260 nm, especially at 24 〇 ~ 245 nm) with a peak of illuminator. The illuminant of the present invention is composed of an oxide of a Group 2A element of the periodic table, and is characterized in that the oxide contains a trace amount of a heterogeneous metal element or a metalloid element. In the present invention, the term "oxide" means a so-called simple oxide, and the main element of the oxide is i of the Group 2A element of the group, and oxygen, the element of the group 2A of the periodic table, and examples thereof include Mg, Ca, Sr or Ba. Among them, Mg is preferred. Also, in the present invention, the oxide of the Group 2A element of the periodic table is preferably oxidized. § 异 异 异 金属 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 There is no particular limitation on the PCT-main at η and -4 buccal glutinin 0LE_LINK1. Specifically, it can be enumerated as follows: ····ρ \ . . . . . , B, Na, Al, Si, K, Sc, ή, v,

Cr ' Mn ' Fe ' Co ' \r: n A

Ni, Cu, Zn, Ga, As, Rb, γ, Nb, Mo, Tc, Ru, Rh, Ασ, τ π τ n

Ag, In, Sb, Cs, La, Pr, pm, Eu, Gd, Tb, Ho, Tm, Lu, Ta, E, ir, Au, Dibu, and μ. Only one type of heterogeneous metal element or metalloid element may be used, and two or more types of 200914,581 may be used in combination. Among them, aluminum is preferred. The illuminant of the present invention can have a high luma spike at a wavelength of 200 to 300 nm. It is presumed that the crystal structure of the oxide is changed due to the heterogeneous metal element or metalloid element mixed in the crystal structure of the oxide. And 5 is the intensity of the illuminating peak, which is greatly affected by the electronic configuration of the ground state of the heterogeneous metal element or metalloid element contained in the oxide, or the ion valence and ionic radius in the ionized state. Therefore, it is best to consider the electronic configuration, ion valence or ionic radius to determine the type of heterogeneous or metalloid element to be doped. In order to further increase the luminescence intensity, the heterogeneous metal element or metalloid element in the oxide is preferably compared with the valence ion of the Group 2A element of the periodic table (ie, Mg2, Ca2+, Sr2+ or Ba2+) in an ionic state. For an electronic configuration in which the valence is different, or the ionic radius is significantly different, or the element is in the ground state, an element having an odd number of electrons is present in the S-orbital, p-executing, or d-orbital. The best heterogeneous metal element is the ion system Al3+. The content of the heterogeneous metal element or the metalloid element in the oxide is not particularly limited as long as it is in a range of a trace amount relative to the Group 2A element of the periodic table, but specifically, a heterogeneous metal element or a metalloid element is attached to the periodic table 2 The ratio of the elements is in the range of (1) (10) (1) ~ 丄 耳 % %, preferably in the range of 〇〇〇 ι 〜 1 摩尔 %. The best is around 〇·〇ΐ莫耳%. This content can be determined by usual elemental analysis. The oxide illuminant of the present invention 'in order to be excited by electron beam or ultraviolet ray to produce luminescence with a peak at a wavelength of 200 to 30 〇 nm (especially in 23 〇 to 2009 14581 # especially 240 240 to 245 _) : Powder is preferred. Further, it is more preferable that the oxide I is opened in a small shape. 々 Confirm. In addition, the "cubic 电子-type electron microscope to r _ body shape" does not mean that the geometrical meaning of the cube 3 is indicated by the visual observation of the microscope photograph; it is: the shape of the square body. Further, the oxide is in the form of a cube: :: the particles are not aggregated and are separated from each other, and have a property of good dispersibility: those whose particles are larger in average particle diameter, and the radial diameter = The diffraction diffraction particle size distribution measured by W is better than 1=·:. The ~ is better at 0.3..., t ^ M. In addition, the median diameter of the D5 lanthanum, the particle size (heart) corresponding to 5 vol% in the Yilili/accumulation curve, when the granules are divided into two groups by a radial phase, the larger side and the larger The small side is in the same amount of particles. The diameter of the crystallite measured by the X-ray diffraction method is preferably 500 A or more, more preferably 1000 A or more. Preferably, the primary particles are larger and not included as a whole. The powder of the micro-powder is better than the powder of the oxide by the ratio of the bribe method to the following. More preferably, the crucible is below 2.5 m2/g, and the lamp is swept from the sw θ. 'Specially, it is below l.〇m2/g. The grain == oxide illuminant' is preferably granular, and the primary particles are slightly cubic-shaped on the surface of the cubic crystal. Clean and smooth. Therefore, the oxide has a particle size of 200914581, which means that the particle size distribution is narrower. Specifically, the cumulative 10% particle size measured by the laser diffraction scattering particle size distribution ( Di〇) and the cumulative ratio of D ) 〇 粒径 , , , / / / / 满足 满足 满足 满足 满足 满足 满足 满足 满足 D D D D 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本The oxide illuminant contains a heterogeneous metal element or a metalloid, but when the element other than the heterogeneous metal element or the metalloid element is an impurity, the purity of the oxide of the Group 2A element of the periodic table is high purity. The value is preferably 99.9% by mass or more. The value of the purity is to emit light at a height of 200 to 3 〇〇 nm in the ultraviolet region.

In the case of the oxide illuminant, 哕I "3" is present. The element other than the metal element or the metalloid element is an impurity, and only the value of the content of the impurity is considered. Next, the production of the oxide of the present invention will be described. Method for producing an illuminant. A method for producing an oxide of an element is described in Table 2A of the present invention. The gas oxide or carbonation obtained by reacting the metal monomer of the π element with an aqueous solution is used. The liquid phase method, but the oxidation of the present invention is made: the addition of two kinds: the different kinds of ... the substitution and the content thereof, so that the specific method of the use of the liquid can be applied, as long as it is based on The method of the process i of the process of the invention of the oxide illuminant can be: Second, the element is obtained by using the oxide of the group element as the oxidative lock, the liquid phase method V is a detailed description period; The magnesium oxide precursor to be used is not particularly limited, and the examples used are, for example, magnesium hydroxide, basic carbonic acid 200914581, the resulting alkaline magnesium carbonate, and the magnesium. , magnesium carbonate, and magnesium oxalate, etc. The characteristics of the light body are excellent, and the mixture of the hydroxide is preferred. - It is made of yttrium and yttrium. The magnesium hydride is contained in a trace amount of a heterogeneous gold to make a bismuth or a metal element. Since the precursor contains too much impurities, the purity of the body becomes low, so that the heterogeneous metal element = impurity is preferably less. In addition to the presence of i, the shape of the oxide emitter can be made into a cube shape by purity and crystallinity. The dentate ion, 氯化 exemplified chloride ion, vapor ion, bromide ion, and pickled "pigment ion" 卩 chloride ion. The compound containing the i ion ion is also a specific example of the chemical substance. Examples include hydrochloric acid, ammonium chloride, sodium hydride, potassium chloride, magnesium chloride, etc. The presence of halide ions 詈, know, # for the overall amount of magnesium oxide precursor, 旱 佳佳 in 〇·5~30 詈%夕益阁. The dry circumference of the right. The amount of the right secluded ion is too large = the crystal does not easily grow into a cube shape, and if too much, the crystal of the oxide 2 body does not easily grow. Preferably, it is in the range of 2 to 25 mass%. Further, it is in the range of 10 to 25% by mass. The compound containing the sulphur ion may be the magnesium oxide precursor itself, ', may be derived from impurities contained in the magnesium oxide precursor, or may be synthesized by solution By-products produced by the preparation of the magnesia precursors, or also: may be added to the magnesia precursor, or may be in a gas atmosphere of a closed type furnace, such as hydrogen chloride Or minutes 12 200914581 The form of chlorine or the like is added. Also, the magnesium oxide precursor is completely removed by washing, and another: impurities or a by-product produced by modulating magnesium oxide is added to the oxidized precursor or gaseous atmosphere. The emulsified town precursor is prepared by the method of synthesizing magnesium carbonate and oxidizing water to synthesize the precursor, for example, (1) chlorination water

Xin Qi: An aqueous solution, and a trace amount of a heterogeneous metal element or a metal element such as a telluride or an oxide such as an oxide mixed with a heterogeneous metal element or a metal-like element of hydrogen: a gas in the trace amount. , 胄兀 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱 虱a mixture of carbonic acid towns and chlorine oxidation locks. A trace amount of a heterogeneous metal element or a metalloid ion, and the sodium chloride which is an emulsified (iv) by-product contains a chloride ion. The step (1), specifically, can be carried out in the following manner, that is, when the aqueous solution and the gas-oxidized nano-aqueous solution are gasified and reacted, a metal-like metal or a metal-like element such as a chloride or an oxide is added. An equivalent of an aqueous solution of sodium oxychloride and dissolved, in the case of producing: 焱, by adding an emulsion or oxide of a heterogeneous metal element or a metalloid element to an aqueous solution of magnesium chloride and dissolving it It is added to an aqueous sodium hydroxide solution and reacted. In the step (1), after the magnesium hydroxide incineration is obtained, the concentration of the slurry is adjusted to preferably in the range of 50 to 100 g/L, more preferably in the range of 60 to 90 g/L, by dilution with water.益丄μ, #心耗围 By reducing the concentration of the slurry, the viscosity of the sputum can be lowered, in order to make the carbonation reaction of the next step (7) uniform. 13 200914581 Line 0 This step (2) 申' will Carbon dioxide gas is blown into the slurry to carbonate a portion of the magnesium hydroxide in the slurry. The temperature of the carbonization reaction is preferably 40 to 80 °C. In this temperature range, the magnesium hydroxide can be rapidly converted into a basic carbonic acid. Further, in this temperature range, a mixture of basic magnesium carbonate and magnesium hydroxide having a particle diameter excellent in filtration efficiency can be obtained. The carbon dioxide gas used in the carbonation reaction is used in an amount to convert a part of magnesium hydroxide in the magnesium hydroxide slurry into basic magnesium carbonate, which is an amount which can impart a mixture of magnesium carbonate and magnesium hydroxide. The amount of carbon dioxide gas used is preferably 0. 2 to 2_0 Torr relative to magnesium hydroxide. Within this range, a mixture of basic magnesium carbonate and magnesium hydroxide excellent in filtration efficiency can be obtained with high efficiency. In the nightmare (3), the liquid of the 衣 峨 啜骎 啜骎 啜骎 与 与 与 与 与 = = = = 过滤 过滤 过滤 过滤 过滤 过滤 过滤 过滤 过滤 过滤 过滤 过滤 过滤 过滤 过滤 过滤 过滤 过滤 过滤 过滤 过滤 过滤 过滤 过滤 过滤 过滤 过滤 过滤The chloride ion is directly dried by washing, and then calcined as described later, or the mixture is kneaded to dry the salt and then calcined in the mash. If the content of the chemical ion is too low, the amount of the chemical ion can be too low, so that the cleaning can be controlled by the use of water 4, the washing time, etc. ο force 八,杜 gt; tooth. However, it can also be charged The knives are washed to completely remove the chloride ion ττ compound containing _ cation ions. Mann, and additionally added in the case where the magnesium oxide precursor is magnesium hydroxide, and the precursor is prepared by solution synthesis method 14 200914581 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Heterogeneous metal element f # SI* ^ Magnesium oxide slurry, (5) Filtration of the slurry to bismuth solid magnesium oxide. Ions, and from the material ^ Body 3 has a trace amount of heterogeneous metal element ionic materials Or the sodium chloride of the by-product, which comprises chlorine, the step (4), which is the same as the step (1). In the following: (7), the oxidized aqueous slurry obtained in the step (1) is subjected to =':: chlorine oxidation to the solid Town. Because The solid matter contains chloride ions, so it can be treated by the above method. In the manufacture of the oxide illuminant of the present invention, the storage of the complex ions can be carried out in the sealed (four) system or the open system. Secondly, it is better to use it in a closed system. Here, (4) the system refers to the gas existing in the space where the firing is performed, and does not substantially flow out to the outside, and the gas does not flow from the outside and is almost closed. The system is different from the normal firing method in which the gas is opened in a large atmosphere, and the sintering is performed in a closed system, and the halide ions are not dispersed to the outside. It only stays in the container for firing and fully participates in the process of crystal growth of the emulsion powder. Thus, a cubic crystal powder excellent in crystallinity can be obtained. This can be used, for example, in the firing of a closed system. There is no ambient atmosphere in which the gas flows into and out of the closed electric furnace, or it can be placed in a closed circuit. The temperature at the time of firing is in the coffee. Right, and (10) 15 200914581 is the most right. If the temperature at the time of firing is too high, the agglomeration will result in poor dispersibility, and the squad will be smashed. However, although it varies depending on the temperature, it will be listed in about 5 hours, at a temperature of about 12 ah. In particular, it is limited to 5 to 1 (about rc/min. (10) The speed of the temple is not burned under these conditions, and the powder of the crystallized material can grow, but the bulk emulsification is not sufficient. Remove the above-mentioned eight "small in the closed simmering" and therefore remove the above-mentioned chemistry containing the toothing: = powder. In order to reduce one of the two containing - cation ions: the purity of the blasting oxide powder Preferably, after the closed system is completed, the second firing is performed in the open system. The second firing is performed by firing in a normal open system, that is, the precursor can be used. The impurities contained in the form are removed in the form of an oxidizing gas: the atmosphere is preferably in the atmosphere or in an oxygen atmosphere, and may be carried out in a gas furnace in which the atmosphere is atmospheric, the atmosphere gas flows, or an electric furnace under a stream of oxygen. The temperature, the time, and the gas in the furnace at the time of secondary firing are not particularly limited as long as impurities such as a compound containing a tooth ion are removed, but since the crystal growth is completed once, the second gas can be used. The time of secondary firing is set to be shorter. Since the oxide illuminant of the present invention can strongly emit light at a wavelength of from 300 nm in the ultraviolet region, it can be applied to a plasma display panel to find various optical elements. In particular, the oxide light-emitting body of the present invention can be formed by using the oxidized town-bonding method or the static electricity constituting the crystalline magnesium oxide layer (Crystai Emissive Layer) 16 200914581 provided on the protective film of the PDP. By directly spraying the oxide illuminant of the present invention on the protective film, it is also possible to produce a gel containing the illuminant, and to protect the enamel and dry it. The elbow glue is applied to this embodiment. Although the invention is described in detail in the fourth embodiment, the present invention is described in detail, but the present invention is not limited to the embodiments. Wait. In the following examples, various physical properties are measured according to the procedure shown below. (1) Measurement method of cathodoluminescence, and the assembly of a light double benefit and a spectroscope on a scanning electron microscope (cathode luminescence measuring device, In the HORIBA system, an electron beam from an electron of the scanning electron microscope is irradiated onto a sample, and an emission spectrum of the emission of the sample is measured. (2) Scanning electron microscope (SEM) observation

jThe SEM image was taken using a scanning electron microscope (product name: JSM-541〇, JE (U system)' to observe the particle shape and measure the length of the cubic magnesium oxide side. (3) Magnesium oxide impurity mass measurement oxidation The impurity quality of the material is measured by dissolving the sample in an acid using an ICP luminescence analyzer (product name: SPS-17, manufactured by SEIK® INSTRUMENTS1). (4) Oxide purity measurement method, purity of oxide, The addition of the heterogeneous metal element or the gold-like element 17 200914581 element element (aluminum in the first embodiment, 钇 in the second embodiment, and 鈒 in the third embodiment) was calculated, and the measured impurity was calculated by subtracting 100% by mass. (5) Method for measuring crystallite diameter The crystallite diameter of the illuminant of the present invention is measured by a powder calender diffraction method and then calculated by Scherrer's formula. Example 1 Sodium hydroxide (NaOH) The aqueous solution is reacted with an aqueous solution of magnesium chloride (MgCl 2 ) to obtain a slurry of magnesium hydroxide (Mg(OH) 2 ). In the manner of containing aluminum of about 1 mol% relative to magnesium, an appropriate amount of chlorine is used in the reaction. Aluminum (A1CW hexahydrate) The product is dissolved in sodium hydroxide...printed aqueous solution, added to the magnesium oxide powder as the final product. The magnesium hydroxide slurry is diluted to a slurry concentration of 75 g/L with ion exchange water, and is 1 30~i50 rpm while stirring the diluted magnesium hydroxide slurry 30L, while blowing water vapor to adjust the liquid temperature to 6 (rc. - People, while maintaining the liquid temperature at 60 ° C, while from the tank The lower part blows carbon dioxide gas of 100 vol% of c 〇2 concentration into 3/4 equivalent to convert a part into basic magnesium carbonate. Next, the slurry is filtered, and the prepared cake is washed with ion-exchanged water. Thereafter, the filter cake was dried in a dryer at 12 (r) for 10 hours to obtain a precursor. Second, the precursor of the mixture of magnesium hydroxide and basic magnesium carbonate was left in an atmosphere at ambient atmosphere. The atmosphere gas flows out of the enclosed electric furnace to a temperature increase rate of 6. (: /min is heated to 1200 ° C, and is maintained at the same temperature for 5 hours, thereby being fired to form magnesium oxide powder. Step by step in the atmosphere 200914581 ring In the atmosphere of my brother The gas furnace in which the ambient atmosphere gas flows in was calcined at 〇〇2〇〇t for 1 hour to obtain a magnesium oxide powder. The results of measuring the cathodoluminescence of the obtained magnesium oxide powder are shown in Fig. 1. The magnesium oxide powder obtained in the embodiment i has a luminescence spike with extremely high luminescence intensity at a wavelength of 2 〇〇 to 3 〇〇 nm (especially at 230 to 260 nm, particularly 24 〇 to 245 nm). The results of observing the prepared magnesium oxide powder by a scanning electron microscope (15, 〇〇〇倍) are shown in Fig. 2. The crystal shapes observed were almost all cube-shaped, the particle shape was extremely uniform, and the crystallite diameter was in ι〇〇. 〇Α Above. Further, one side of the cubic crystal is approximately 〇, and the particle size distribution is extremely narrow. Unlike FIG. 3 described later, fine particles are not adhered to the crystal surface, and the crystal surface is smooth and clean. Further, each of the cubic crystal grains is clearly separated. Example 2 The magnesium oxide powder of the post-product was obtained by using the appropriate amount of chlorinated (YCl3) hexahydrate (manufactured by Kanto Chemical Co., Ltd.) in addition to the amount of the molar containing about 5% of the molars (manufactured by Kanto Chemical Co., Ltd.) In the same manner as in Example 1, except that the AICI3 hexahydrate salt was used, a magnesium oxide illuminant was formed and formed. The mycelium of the obtained magnesium oxide powder has a mystery crystal diameter of 1000 A or more. Further, the results of the measured cathode luminescence are shown in Fig. Example 3 In the oxidation of the last product, the magnesium halide was stopped, and the amount of vanadium oxide (v3〇d (v3〇d) was dissolved in hydrochloric acid in a manner of about 0.01 mol% relative to magnesium. Kanto Chemical Co., Ltd.) to take the harvest 5) Dog Chaohua Ming (A1C〗 3) Liushui salt 'Additional 19 200914581 Dissolved in the chlorinated town (the MgCW aqueous solution, in the same way as the Example ,, the formation of 氡Magnesium illuminant. The crystallite diameter of the prepared emulsified lock powder was on (9) enthalpy. Further, the results of the measured cathodoluminescence are shown in Fig. 1. Comparative Example 1 In the production of magnesium hydroxide slurry, dissolution Magnesium oxide powder was prepared in the presence of an aqueous solution of sodium hydroxide. Magnesium oxide powder obtained in the gas was obtained. As can be seen from Fig. 1, in the comparative example, the magnesium oxide powder had a wavelength of 200 - peak, but the luminous intensity was lower than that of the examples. Comparative Example 2 In addition to the addition of the aluminum chloride hexahydrate salt, the results obtained by undoping different elements in the same manner as in Example 1 confirmed that several light-emitting tips were obtained by the gas. Cathodoluminescence powder was obtained from the oxidized powder prepared by the phase method: 2 Figure 1σ It can be seen from Fig. 1 'The magnesium oxide bamboo shoots produced by the gas phase method have a strong light-wavelength I 200~300 nm, and some light-emitting peaks can be confirmed, but the intensity is lower than that of the example i. The results of the vapor phase method: magnesium hydride powder are shown in Fig. 3. It is understood that although the cubic denier is contained, a large amount of fine particulate crystals are adhered to the surface, and the surface is 1-3 and Comparative Example 1~ The ratio of the added element to the magnesium in the oxide of pure oxide 3 of 2 is shown in Table i. The results of the measurement of the examples and the examples (% by mole) are shown in Table i. 20 200914581 [Table 1] Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Oxide purity MgO MgO MgO MgO MgO (% by mass) 99.9 or more 99.9 or more 99.9 or more 99.9 or more 99.9 or more Adding element (mol%) A1 0.0153 Y 0.0097 V 0.0182 - - Industrial utilization Since the oxide light-emitting body of the present invention has a high-luminous light-emitting peak in the ultraviolet region 200 to 300 ηπ by excitation by an electron beam or ultraviolet rays, it can be widely applied to an optical element using the light-emitting wavelength region. by The luminous efficiency or discharge delay of the PDP is improved by using the magnesium oxide crystal constituting the crystalline oxidized money layer provided on the protective film of the pDP. [Simplified Schematic] FIG. 1 ' shows the measurement of the examples and the comparative examples. Fig. 2 is an electron micrograph of the magnesium oxide powder obtained in the example. Fig. 3 ' is an electron micrograph of the magnesium oxide powder of Comparative Example 2. [Main component symbol description 】 (none) 21

Claims (1)

200914581 X. Patent application garden: The outer line 1 area - 2 = is excited by electron beam or ultraviolet light in purple, 〇〇 3 〇〇 _ has a light spike, which is characterized by · · - sound two by 匕 3 heterogeneous It is composed of an oxide of a metal element or a metalloid element of the periodic table 2A. The illuminant of claim i, wherein the ratio of the oxide, the metal element or the metalloid element to the element of the Group 2A of the periodic table is 〇·0 0 〇 1 to 1 mol%. The illuminant of claim 1 or 2, wherein the Group 2A element of the periodic table is Mg, Ca, & or Ba. 4. The illuminant of claim 134, wherein the element of Group 2A of the periodic table is Mg. 5. The illuminant according to claim 1 or 2, wherein the heterogeneous metal element or metalloid element is selected from the group consisting of u, B, Na, Ai si, K^SC, Tl, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, As, Rb, Y Nb, M. At least one of the groups consisting of Tc, Ru, Rh, Ag, In, sb, Cs, La, Eu, Gd, Tb, Ho, Tm, Lu, Ta, Re, Ir, Au, 耵, 、, and At i kind. 6. The illuminant of claim 1 or 2, wherein the heterogeneous metal element is A1. 7. The illuminant according to claim 1 or 2, wherein the oxide has a purity of 99.9% by mass or more when the heterogeneous metal element and the element other than the metal element are impurities. . 8. The illuminant according to claim 1 or 2, wherein the oxygen 22 200914581 compound is granular, and the shape observed by a scanning electron microscope is a powder composed of primary particles of a cubic body. 9. The illuminant of claim 1 or 2 wherein the oxide powder has a cumulative 50% particle size (D5 〇) measured by a laser diffraction scattering particle size distribution of 0.1 Å or more. 10. The illuminant of claim 1 or 2, wherein the oxide powder has a crystallite diameter of 5 〇 以上 or more. 11. The illuminant of claim 1 or 2, wherein the oxide is produced by a liquid phase method. 12. An optical component is formed by loading an illuminant of claim 1 or 2. XI. Schema: As the next page. twenty three