TWI373510B - Phosphor materials and methods for fabricating the same - Google Patents

Description

IX. Description of the invention: [Technical field to which the invention pertains] and particularly relates to a doping rare invention relating to a fluorescent material, a fluorescent material of a earth element. [Prior Art] The field of fluorescent materials and human daily life skills and medical treatments was mainly used in the early years to gradually play an important role with the advent of the multimedia video era. Xi related 'widely used in lighting, fluorescent, neon equipment, and near 'fluorescent materials in the field of electronic display' field emission display (FED) technology principle cathode ray tube (CRT) similar, basin Place rRT Tian,, and Fu in ~~fluorescent powder and tip discharge electron source; earth plate, use the electric field to release electrons from the tip, and then use the ancient speed to hit the fluorescent plate to emit light, straight _ back σ , , excellent station is still shell degree, power saving, no viewing angle limitation, fast time, etc., but due to the poor absorption effect of current fluorescent materials in the UV band, the development of FED is limited. U.S. Patent No. 558,574 proposes a conductive red fluorescent material, the main component of which is composed of 'a kind of can' which can emit light at a low level and can be fabricated on a field emission device. The present invention provides a fluorescent material expressed by a chemical formula of Sr2(Cei.xSnx)04 'where x=〇.〇〇 j~. The invention also provides a fluorescent material, including: - a host material, including

0991-A51305-TW Oxide, tin oxide; a dopant, Xiao Zuoqi major impurity & Rare earth halogen L' This fluorescent material is not Sr2 (Ce丨-xSnx) 〇4: yL, where χ=〇〇〇1 〇5, 丫=〇〇〇ι~〇3. The invention also provides a method for preparing a fluorescent material, comprising the steps of: providing an aqueous solution comprising a tin metal ion, recording a metal ion disk, a hexametal ion; adding a chelating agent to the aqueous solution; adding-polymerizing The agent is heated to form a "gel"; the excess water 2 in the gel is heated and removed, and the knee is burned under air to obtain a fluorescent material, the flat material is dry representation Is Sr2(Ce丨·xSnx)〇4, where x=〇〇〇1~〇5. The invention also provides another method for preparing a fluorescent material, comprising the steps of: providing a /tCl compound comprising a tin compound, a bismuth compound and a ruthenium metal; grinding the mixture with a solvent to form a mixture (4) The mixed product is placed in a crucible; the crucible is calcined in air to obtain a photomaterial expressed in the chemical formula as (4) Cei. xSnx) 4' wherein Kecher ~ ^ is the above and other objects and features of the present invention. And the advantages can be more obvious. The following is a detailed description of the preferred embodiment, and is described in detail below with reference to the accompanying drawings: [Embodiment] The present invention provides a novel fluorescent material which is represented by a chemical formula as Sr2 ( Cei_xSnx) 〇4, where χ denotes that the composition of tin (Sn) is less than the value of the pot value of ~0.5', and the range of 桂1~〇3, the best range is 〇〇5~〇2. The particle size of this material is large + range is ^ _~1G _. The fluorescent material of the present invention, the special optical property 'is mainly affected by the content of tin, when no tin is added: Ming, see Figure 1 (4), the excitation light wavelength of this material ranges from 22 〇 nm to · (10) Between 294 ηηι and 345 nm excitation peaks, and the excitation peak at 294 nm is higher than the excitation peak at 345 nm, but when adding tin to this material, please

0991-A51305-TW 6 1373510 > See Figure i(b)' The excitation light wavelength of this fluorescent material ranges from 22〇11^ to 43〇nm, and the main excitation peak gradually changes from 294 iim to 345. The addition of this data 2 tin helps the absorption of this material in the uv band (32 (M(K) _). In one embodiment, when the composition ratio of tin is 〇丨, it is at wavelength 345 The absorption intensity is better. The Sr2(CeKxSnx)〇4 fluorescent material of the present invention excites the material % when the wavelength is 345 nm, and the main emission light wavelength ranges from 450 to 530 nm, which is a blue light material similarly The composition ratio gradually increases. At this time, the intensity of the main radiation peak of the camping light material will gradually increase. In the implementation of the shot, the material has a χ1 value, and its radiation intensity at a wavelength of 483 nm is better. Many commercial materials are currently available. Or the research report indicates that the rare earth ions have special luminescent properties' mainly due to the characteristics of the 4 volt electronic orbital of rare earth ions, which make them exhibit different electronic transition forms. Therefore, the present invention also provides a fluorescent material. Including host material and dopants, the host material includes H The oxide of tin includes a rare earth element L. The fluorescent material is represented by the chemical formula as Sr2(Ce].xSnx)〇4 : yL 'the towel, and χ represents the composition ratio of tin (Sn), and the value thereof is between O.ool~〇.5' is preferably in the range of 0 01 to 03, and the optimum range is 〇〇5 to 〇2. And L represents rare earth, which includes lanthanum (La), cerium (Ce), lanthanum ( Pr), 鈥, 钐 (§, 铕 (Eu), 釓 (Gd), 铽 (Tb), 镝 (Dy), 鈥 (Ho), bait (Er), 铥 (Tm) '镱 (Yb) Or 钍 (Th), alone or in combination of the above, the doping amount y value is between 〇_〇〇1~〇.3, preferably in the range of 0·003~0 2, and the optimum range is 〇〇1~〇 In addition, the size of the phosphor material is about 〇μιη. Since the host material itself has good absorption intensity in the UV band, a blue light material can be obtained by using the band to excite the material, and if the rare earth is doped again, In the case of ions, the rare earth ions have special luminescent properties, so that the light-emitting intensity of the fluorescent material can be enhanced to make the light-emitting effect better.

0993-A51305-TW 7 1373510 « In the embodiment, the fluorescent material comprises Sr2(Cei_xSnx)〇4: yEii3+, wherein the X value is between 〇.〇01~0.5, and the y value indicates the 铕(Eu) blend The ratio is between 001 and 0.3. Since the emission range of the dopant Eu3+ makes the material a red fluorescent material in red light, the main excitation light wavelength ranges from 29 〇 nm to 37 〇 nm, and the wavelength of the emitted light ranges from 5 〇〇 to 7 〇〇. Nm. In a preferred embodiment, when the field y is 〇·1, the intensity of the excitation light having a wavelength of 345 nm is better, and the intensity of the light having a wavelength of 616 nm is better. In another embodiment, the phosphor material comprises Sr2(Cei xSnx)〇4:ySm3+, where the X value is between 〇·〇01~〇5, and the y value represents the doping ratio of 钐(Sm), Its value is between 0.001 and 0.3. Since the light-emitting range of the dopant Sm3+ makes the material a red fluorescent material in red light, the main excitation light wavelength ranges from 29 〇 nm to nm ′ and the main emission light wavelength ranges from 500 to 700 nm. 3 In another embodiment, the phosphor material comprises Sr2(Cei_xSnx)04:ySm3+, zGd, wherein the value of x is between 〇〇〇1 and 〇5, and the y value represents the doping ratio of the squeaking, and the value thereof The ratio of z is 0.001 to 0.3, and the z value indicates the doping ratio of 釓 (Gd), and the value is between 0.001 and 0.3. Since the light-emitting ranges of the dopants Sm3+ and Gd3+ are both red, the material becomes a red-light fluorescent material, and the main excitation light wavelength range is 29〇70 nm and the main emission light wavelength range includes 500 nm~700 nm. . The present invention also includes a method of preparing a fluorescent material, which comprises preparing a Sr2(Ce, -xSnx)〇4 by a sol-gel method, wherein χ=〇〇〇1 ～〇5, including the following steps 0) First, an aqueous solution is provided, which includes tin metal ions, ruthenium metal ions and ruthenium metal ions, for example, by adding tin '镙 and yttrium oxide, carbonate or nitrate in water'. When the compound is not easily soluble, some strong acid is added to help dissolve, such as hydrochloric acid 'nitric acid or sulfuric acid; (b) then a chelating agent is added to the aqueous solution, wherein the chelating agent includes but is not limited to

0991-A51305-TW 8 1373510 in citric acid, pentaethylenehexamine (PEHA), glycidyl methacrylate (GMA) or ethylenediaminetetraacetic acid (glycidyl methacrylate, GMA) Ethylenediaminetetraaccetic acid (EDTA), the effect of adding a chelate mixture is that the chelating agent can bond with metal ions to form a complex to improve the uniformity and reactivity of metal ion distribution in the sol-gel method; (c) After uniformly adding a polymerization agent in the aqueous solution, wherein the polymerization agent includes, but is not limited to, a polyol containing two or more hydroxyl groups, such as ethylene glycol or glycerin, and the polymerization agent is added to generate a dehydration polymerization reaction with the chelating agent. Increasing the uniformity of the reaction, and the ratio of the molar ratio of the polymerization agent and the chelating agent to all the metal ions is (1 to 10): (1 to 4): 1; (d) After the aqueous solution is stirred uniformly, the mixture is heated. To 70 ° C ~ 350 ° C, to remove excess water and form a gel; (e) then the gel is heated to 300 ° C ~ 800 ° C under air, 0.5 ~ 10 hours to remove this Excess water and organic in the gel (f) The gel is calcined under air to a temperature of 700 to 1600 ° C, and the fluorescent material is obtained after 0.5 to 24 hours. I The present invention also includes another method of preparing a fluorescent material, which comprises preparing a Sr/CemSndC^ by a solid-state method, wherein x = 0.001 to 0.5, comprising the following steps: (a) providing a mixture And the mixture comprises a shouting, recording and decorating oxide, a carbonic acid salt or a nitrate; (b) grinding the mixture with a solvent by ball milling to form a mixed slurry, wherein the solvent comprises ethanol, decyl alcohol, Acetone or isopropanol, since the added particles are easily uneven in size, the composition is made uniform by ball milling; (c) the mixed slurry is placed in a crucible;

0991-A51305-TW 1373510 (d) Squeeze in air to a temperature of 700 ° C to 1600 ° C for 0.5 to 96 hours to obtain a fluorescent material. The fluorescent material obtained by the above production method was observed by a scanning electron microscope 'SEM (SEM) to have a particle size of about 0.1 μηη to 10 μηη. The excitation spectrum and the emission spectrum of the fluorescent material are measured by photoluminescence spectrometer (photoluminescent, PL). The main excitation light wavelengths are between 220 nm and 43 nm, which is in line with the absorption of the UV band. The main emission wavelength range is between 450 nm ~ 530 nm, can be used as a fluorescent material. In the above method for preparing a fluorescent material, a rare earth element may be additionally added, and a compound containing φ having a rare earth element such as an oxide, a carbonate or a nitrate of a rare earth element may be added. If the sol-gel method is used, the molar number of the rare earth element compound required is calculated according to the chemical formula to be synthesized, and then the polymerization agent: chelating agent: the molar ratio of all metal ions is (1 to 10): (1~ 4) : 1, and referring to the above synthesis method, a fluorescent material containing a rare earth element can be obtained. If the solid phase method is used, the proportion of the doped rare earth element is determined according to the chemical formula to be synthesized, the molar number of the rare earth element compound required is calculated, and the above-mentioned synthesis method can be used to obtain a fluorescent material containing a rare earth element. Fluorescent materials doped with rare earth elements, the wavelength of the excitation spectrum and the emission spectrum | range varies depending on the dopant, and the intensity of the excitation or emission spectrum varies depending on the composition ratio of the dopant. The fluorescent material of the present invention can be applied to a light emitting diode (LED) or a field emission display (FED) in the future due to its good absorption in the UV band. [Examples] Example 1 Preparation of Sr2Ce04 According to the stoichiometric ratio of Sr2Ce04, the starting materials Sr(N03)2, Ce(N03)3 were added and deionized water was added to prepare an aqueous solution, and citric acid was added as After the chelating agent and the sandalwood are evenly mixed, ethylene glycol is added as a polymerization agent, of which 10

0991-A51305-TW 1373510 • · The molar ratio of ethylene glycol, citric acid and metal ions is 4: 2: 1, the solution is uniformly mixed and heated to 70~350 °C to remove excess water and form a gel. Then, the gel is heated at 500 〇C in an air atmosphere for 2 hours to remove residual water and organic matter, and the obtained powder precursor is simmered in air for 1 hour, and the desired powder is obtained. Body 0 When the tin is not added to the phosphor, please refer to Fig. 1(a). An asymmetric broadband (220~430 nm) can be obtained in the excitation spectrum. After analysis, it is found that the two are located at 294 respectively. And the excitation peak of 345 iim, where the peak at 294 nm is higher than the peak at 345 nm. The phosphor is excited at 345 nm, see Figure 2 (a), which has a broad emission peak at 483 nm and is a blue light. Example 2 Preparation of Sr^CeowSno.odC^ According to the stoichiometric ratio of Sr2(Ce〇.93Sn〇_〇7)〇4, gn〇 was dissolved in a small amount of acid, and the starting materials Sr(N〇3)2, Ce were added. (N〇3)3 and add deionized water to prepare an aqueous solution, add citric acid as a chelating agent, and stir evenly, such as ethylene glycol φ (ethyienedyc01) as a polymerization agent' 'The molar ratio of citric acid to metal ion is 4 2 . 1. The solution is uniformly mixed and heated to 7 〇 to remove excess water and form a gel, and then the gel is heated at 500 ° C in an air atmosphere. 'The remaining water and organic matter were removed in 2 hours, and the obtained powder precursor was simmered at 1000 ° C for 4 hours under air to obtain the desired powder. When the amount of tin ions added increases to 0_07, see Figure ith, the excitation spectrum is still an asymmetric wide band (220~43〇nm). It is composed of excitation peaks of 294 nm and 345 nm. The intensity of the excitation peak at 345 nm was increased as compared with Example 1, and the intensity of the excitation peak at 294 nm was lower than that of the Example. The phosphor is excited by an energy of 345 nm. See Figure 2(b), and the emission spectrum is still at 483.

0991-A51305-TW 11 1373510 South rim, the light intensity is higher than that of the tin-free fluorescent material (Example 制备). Example 3 Preparation Si^Ceo.sSno^C^

According to the stoichiometric ratio of Sr2(Ce〇_8Sn〇.2)〇4, the ratio of Sn 〇 is dissolved in a small amount of acid into the starting materials Sr(N03)2 and Ce(N〇3)3.添力本Λ “Adding deionized water to form an aqueous solution, adding citric acid as a chelating agent, and adding 乙二醇(4) 筏, then adding ethylene glycol (iv) y iene glye tank as a polymerization agent, wherein B: alcohol The ratio of the molar ratio of the lemon (four) to the golden listener is 4: 2: 1. This solution is mixed and heated to the temperature of ~~10. c. Except for excess water and forming a gel, it will be condensed in an air atmosphere. Add 500 C, remove residual water and organic matter in 2 hours, and obtain the desired powder by boiling the powder precursor in the air for 1 〇〇〇 ° C '4 hours. · Increase the amount of tin ions added. As for the 姓2, the surname will be 曰, υ·2, and the printing is shown in Figure 3. An asymmetric broadband (220~430, red over, 丄w nm) can be obtained in the excitation spectrum. The excitation spectrum is located at 35〇nm. The intensity of the excitation peak continues to increase, while the intensity of the excitation peak at Coke Cong decreases. This phosphor is excited at 345 nm. Please refer to Figure 4 for a wide range of blue light regions. The peak is at a wavelength of 483 nm. Example 4 Preparation of Sr2(Ce〇.6Sn〇.4)〇4 According to the stoichiometric ratio of sr2(Ce〇.6sn〇.4)o4, Sn〇 is dissolved in a small amount of acid and added. Starting material skno3)2, Ce(N〇3)3 and adding deionized water to prepare an aqueous solution, adding citric acid (dtH"dd) as a t-mixing agent, after mixing uniformly, adding ethylene glycol as polymerization Agent, _ _ T-hexanol, # mic acid and metal ion molar ratio is 4 : 2 : 1 ' This solution is kneaded and stirred, then heated to 7 〇 ~ 350 〇 C to remove excess water and form Gel, which is connected to this mountain t; the gel is heated at 500 ° C in an air atmosphere, and the residual moisture is removed in 2 hours, and the powder precursor obtained from the ancient 槐 & 'machine' is simmered in the air. Na C, 4 hours, you have the powder you want.

0991-A51305*TW 12 1373510 Increasing the amount of tin ions added to 〇.4' See Figure 5, where an asymmetric broadband (220~430 nm) is obtained in the excitation spectrum and excitation at 350 nm in the excitation spectrum. The intensity of the peak continues to increase, while the intensity of the excitation peak at 294 nm decreases. Excitation of this phosphor at 345 nm 'see Figure 6' gives a broad emission peak in a blue region with a wavelength at 483 nm. Example 5 Preparation of Sr2(Ce〇.93Sn〇.〇7)04 : 0.01Eu3+ According to Sr2 (Ce〇.93 Sn0.07)O4: 0.01Eu3+ stoichiometric ratio, SnO is dissolved in a small amount of acid Sr(N03)2, Ce(N03)3 and Eu2〇3' are added to deionized water to prepare an aqueous solution, and citric acid is added as a chelating agent. After stirring, ethylene glycol (ethylene glycol) is added. As a polymerization agent, the molar ratio of ethylene glycol, citric acid and metal ions is 4:2 : 1 'This solution is uniformly stirred and heated to 70-350 ° C to remove excess water and form a gel. The gel was heated at 500 ° C for 2 hours in an air atmosphere to remove residual moisture and organic matter, and the obtained powder precursor was simmered in air for 4 hours to obtain the desired powder. The fixed tin ion addition ratio is 〇.〇7, when adding a very small amount of ytterbium ions (y= _ 0.01), please refer to Fig. 7 'the excitation spectrum from a broadband (220~430 nm) and several sharp edges Composed of (397 and 417 nm), the highest peak of this broadband is around 345 nm. Excitation of this fluorescent material at 345 nm, see Figure 8, which can obtain multiple sharp radiation peaks at 450~700 nm. The southernmost peak is at 616 nm, which belongs to the red region. Example 6 Preparation of SrXCeewSno.oOC^: 0.1Eu3+ According to Sr2(Ce 0.93 Sn 〇, 〇7) 〇4.1 Eu Chemical 6 Measure the amount of §ηΟ dissolved in a small amount of acid 'Add starting material Sr(N〇 3) 2, Ce(N〇3)3 and £u2〇3, and add deionized water to prepare an aqueous solution 'add citric acid as an integrator. After mixing evenly, 'add ethylene glycol (ethylene) Glycol) as a polymerization agent, in which ethylene glycol and rod

0991-A51305-TW 13 1373510 The molar ratio of citric acid to metal ion is 4: 2: 1, the solution is stirred evenly and heated to 70~3 50 °C to remove excess water and form a gel. The glue was heated at 500 ° C in an air atmosphere for 2 hours to remove residual moisture and organic matter, and the obtained powder precursor was calcined at room temperature for 4 hours to obtain a desired powder. The ratio of fixed tin ions added is 0.07. When more cerium ions (y=〇.l) are added, please refer to Fig. 9. The excitation spectrum is still a broadband (220~430 nm) and several sharp edges (397 And 417 nm), the highest peak of this broadband is around 345 nm. Excitation of this phosphor at 345 nm, see Figure 10, can obtain multiple sharp radiation peaks at 450~700 nm φ, the highest peak at 616 nm, belonging to the red region. Example 7 Preparation of Sr2 (Ce〇.93Sn〇.〇7)〇4··〇.2Eu3 According to Sr2(Ce〇.93Sn〇.〇7)〇4. 0.2 Eu chemist ratio 'SnO is dissolved in a small amount of acid In the middle, the starting materials Sr(N03)2, Ce(N03)3 and Eu2〇3 are added, and deionized water is added to prepare an aqueous solution, and citric acid is added as a chelating agent, and the mixture is evenly mixed, and then added. Ethylene glycol (ethylene glycol) as a polymerization agent, wherein the molar ratio of ethylene glycol, citric acid and metal ions is 4: 2: 1, the solution is uniformly stirred and heated to 0 to 70 to 350 ° C to remove excess Moisture and gel formation, then the gel is heated at 500 ° C in an air atmosphere for 2 hours to remove residual water and organic matter, and the obtained powder precursor is simmered in air at 1000 ° C for 4 hours. The desired powder. The tin ion addition ratio is fixed at 0.07. When more cesium ions are added, see 'Figure 11, the excitation spectrum is still composed of a broad band and several sharp fronts. The highest peak of the excitation spectrum is around 345 nm. The battalion powder is excited at 345 nm. Please refer to Fig. 12 for multiple sharp radiation peaks at 450~700 nm. The highest peak is at 616 nm, which belongs to the red region. The intensity of the luminescence increases with the addition of strontium ions. Enhanced. Example 8 Preparation of Sr2 (Ce〇.93Sn〇.〇7)〇4 : 〇.〇5Sm3 14

0991-A51305-TW 1373510 According to the stoichiometric ratio of Sr2(Ce〇.93Sn〇.〇7)〇4 : 0.05 Sm3_r, high purity SrC〇3, Ce〇2, Sn〇2 and Sm203 were added to the appropriate amount of ethanol as medium. After being uniformly ground by a ball mill, a mixed slurry is obtained, and the slurry is dried, placed in an alumina crucible, and calcined in air at a temperature of 10 ° C for 4 hours to obtain a desired fluorescent material. . The fixed tin ion molar ratio is 0.07, and the strontium ion molar ratio is 0.05. Please refer to Fig. 13, which can observe a broad excitation spectrum at 220~430 nm, and the highest excitation spectrum is around 345 nm. When the phosphor is excited at 345 nm, please refer to Fig. 14 for φ. Several sharp emission peaks can be observed in the wavelength range of 550~700 nm, and the illumination range belongs to the red region. Example 9 Preparation of Sr2(Ce〇.938110.07)04: 0.03Sm3+, 0.03Gd3+ Southern purity SrC〇3, Ce〇2, Sn〇2, Sni2〇3 and Gd; 2〇3 according to Sr2 (Ce〇.93Sn0. Q7)04: stoichiometric ratio of 0.03Sm3+, 0.03Gd3+, adding appropriate amount of ethanol as medium, and grinding by ball milling to obtain a mixed slurry. The slurry is dried, placed in an alumina crucible, and simmered in air. At a temperature of 10 ° C, after 40 hours, the desired fluorescent material is obtained. The ratio of fixed tin ion molars is 0.07, and the molar ratio of erbium ions to erbium ions is fixed to 0.03. Please refer to Fig. 15, which can observe broad excitation peaks at 220~430 nm, in addition, compared with Figure 13 (fluorescent material undoped with Gd3+), 'This example adds several sharp excitation peaks between 400 and 450 nm, while the highest peak is still around 345 nm. The phosphor is excited by an energy of 345 nm. See Figure 16. A set of sharp radiation _ (550 nm to 700 nm) is observed, which is the energy transition of the erbium ion in the red region. Although the present invention has been disclosed above in several preferred embodiments, it is not intended to limit the invention, and any one of ordinary skill in the art without departing from the invention.

0991-A51305-TW 1373510 In the spirit and scope of the invention, the scope of protection of the invention is defined by the scope of the appended claims.

16

0991-A51305-TW 1373510 » [Simplified illustration] Fluorescence excitation spectrum, using D fluorescence emission spectrum diagram, using the first, third, fifth, seventh, ninth, ll, 13 and 15 diagrams to illustrate this The wavelength and intensity of the excitation light of the embodiment of the invention are as follows: 2, 4, 6, 8, 10, 12, 14, and 16 are diagrams for illustrating the wavelength and intensity of the emitted light according to the embodiment of the present invention.

0991-A51305-TW 17

Claims (1)

X. Patent application scope: h A fluorescent material x=0.001~〇5 ° is represented by a chemical formula of 8Γ2((^ χ3ηχ)〇4, wherein the fluorescent material described in the item i of the dimethyl eye patent range, wherein the fluorescent material The material mainly emits light in the wavelength range of 220 nm to 430 nm. 3. The camping material as described in claim i, wherein the main emitting wavelength of the fluorescent light ranges from 450 nm to 530 nm. The fluorescent material according to the invention of claim 4, wherein the fluorescent material is a blue fluorescent material. The fluorescent material according to the invention, wherein the fluorescent material has a particle size of 〇. 1 μιη~10 μπι. 6. A fluorescent material comprising: a host material comprising oxides of lanthanum, cerium and tin; a dopant comprising rare earth element B, the fluorescent material being represented by a chemical formula as Sr2 (Ce 】.xSnx)〇4 : yL ' where x=0 001~0 5〇〇1 ~〇3. 7. The fluorescent material according to claim 6, wherein the rare earth element L has been bracketed (La ), 钸 (Ce), 镨 (Pr), 引 (Nd), 钐 (Sm), 铕 (Eu), chaos (Gd), money (Tb), 镝 (巧), 鈥 (Ho), 铒 (Er), 铥 (Tm), 镱 (Yb) or 钍 (Th), alone or in combination of the above 8. As in the scope of claim 6 A fluorescent material, wherein the size of the fluorescent material is 〇, 1. 9. The fluorescent material according to claim 6, wherein the fluorescent material comprises Sr2 (Cei-xSnx) 〇 4 yEu3+, wherein χ=0.001 ～0.5, y=〇.〇〇1~〇.3. 10. The fluorescent material according to claim 9, wherein the fluorescent material has a main excitation light wavelength range of </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> <RTIgt; The fluorescent material according to claim 9, wherein the fluorescent material is a red fluorescent material. W 13 ', as in the fluorescent material according to claim 6, wherein the luminescent material; Sr2(Cei.xSnx)〇4 : ySm3+, where x=0.001 to 0.5 ' y = 0.001 to 0.3. 14·Luoguang material as described in claim 13 of the patent application, The main excitation light wavelength range of the optical member of the business to 290 nm~370 nm. 5' The f-light material of claim 13, wherein the fluorescent material has a main emission wavelength ranging from 500 nm to 700 nm. !6. The fluorescent material according to claim 13, wherein the camping material '«4 is a red fluorescent material. A fluorescent material as described in claim 6, wherein the battalion material includes sr2 (Cei.xSnx) 〇4: ySm3+, like 3+, wherein (4). (4) $,^ ~0·001 ~0.3, ζ=0·〇〇ι~0.3. 18_The main excitation light wavelength range of the material mentioned in item 17 of the patent application scope is 29Gnm rhyme nm^, and the medium material precursor material 19. The fluorescent material as described in the 17th patent scope of the patent, the main material The range of wavelengths of the emitted light includes 500 to 700 nm. The material is H, please refer to the fluorescent material described in Item 17 of the Patent (4), in which the battalion is a red and green fluorescent material. ^1·- A method for preparing a fluorescent material, comprising the steps of: providing a pure water, the reading "reporting metal ions 丨τ~ metal ions and adding-chelating agent in the aqueous solution; adding a polymerization agent In the aqueous solution; heat the aqueous solution to form a gel; 〇99I-A51305-TW 19 1373510 to remove excess water from the gel; and calcine the gel under air to obtain a fluorescent material, The fluorescent material is represented by a chemical formula of Sr2(Cei_xSnx)〇4, wherein χ=0·001~0.5. 22. The method of preparing a fluorescent material according to claim 21, wherein the metal ion is tin, The method of preparing a fluorescent material according to claim 21, wherein the chelating agent comprises citric acid, pentaethylene Amine (pentaethylene hexahydrate, PEHA), glycidyl methacrylate (GMA) or ethylenediaminetetraaccetic acid (EDTA). 24. Preparation of fluorescene as described in claim 21 A method of preparing a material, wherein the polymerizing agent comprises a polyol containing two or more hydroxyl groups. 25. The method of preparing a fluorescent material according to claim 24, wherein the polyol comprises ethylene glycol. The method for preparing a fluorescent material according to claim 21, wherein the polymerization agent: the chelating agent: the molar ratio of all the metal ions is (1 to 10): (1 to 4): 1. 27. The method of preparing a fluorescent material according to claim 21, wherein the temperature of the aqueous solution is heated to form the gel in a range of 70 ° C to 350 ° C. 28. As described in claim 21 The method for preparing a fluorescent material, wherein the temperature of the gel is calcined under air is in the range of 700 ° C to 1600 ° C. 29. A method for preparing a fluorescent material, comprising the steps of: providing a mixture, The mixture includes a tin compound, a cerium compound and a cerium compound; grinding the mixture with a solvent to form a mixed slurry; placing the mixed slurry in a crucible; and 20 0991-A51305-TW 1373510 simmering the crucible in the air Come a fluorescent material, which is represented by a chemical formula as Sr2(Cei-xSnx)04, wherein χ=〇〇〇1~〇5. 3 0. Preparation of a fluorescent material as described in claim 29 of the patent application. The method, wherein the mixture comprises an oxide, a carbonate or a nitrate of tin, lithium and cerium. 31. A method of preparing a fluorescent material according to claim 29, wherein the solvent comprises ethanol, methanol, acetone or Isopropyl alcohol. " 32. The temperature in the preparation of fluorescent materials as described in claim 29 of the patent application is in the air at a temperature ranging from 700 ° C to 160 (TC. 0991-A51305-TW 21