Fluorescence Properties of Eu^(3+)/Gd^(3+)/Citric Acid Mixed Complexes Doping in Silicon Rubber Matrix

Series of doped rare earth compiexes-EuxGd(1-x) (CA)3·nH2O (CA = citric acid) were synthesized. Some characterizations were taken for these complexes. The experimental results shows that the doped rare earth complexes have the best fluorescence property when the ratio of Eu and Gd is from 0.7 to 0.3. Silicon rubber-based composites were prepared by mechanical blending the EuxGd(1-x) (CA)3·nH2O and silicon rubber. Then, the fluorescent property of the composites was studied. It is found that the fluorescence intensity of the composites increase linearly with the contents of the rare earth complexes increasing.

Eu(Ⅲ) complexes involving 1,3,5-triazine diphosphine oxides

The 1,3,5-triazine diphosphine oxide ligands with donor-acceptor properties formed strong complexes with europium（Ⅲ） ion in acetonitrile. Spectrophotometric titrations and mass spectra indicated that two ligands coordinated to one europium ion. The stability constants varied from 11.64 to 14.60 （log 13）. Binary complexes exhibited rather weak luminescence in solution. 1,3,5-triazine diphosphine oxides engaged as co-ligands in Eu（Ⅲ） （2-thenoyltrifluoroacetonate）3 complex contributed to the overall photoluminescence and allowed for excitation with longer wavelengths than the parent complex.

Synthesis of 1-(2-Hydroxyphenyl)-3-Phenyl-1,3-Propanedione and Luminescence Properties of Its Europium Complexes

Using 2＇-Hydroxyacetophenone and as the raw material, 1-（ 2-Hydroxyphenyl ）-3-Phenyl-1, 3- Propanedione （HPPPD） was synthesized by esterification reaction and Fries rearrangement reaction. And the complexes of HPPPD with europium were also synthesized. The compounds were characterized by IR, thermo-gravimetric analysis and ^1H-NMR. The effects of phenolic hydroxyl on the luminescence properties of complexes were studied. The results show that the complexes emit strong red fluorescence and the fluorescence intensity of the ternary complex is better than that of the duality. But the complexes of HPPPD with Sm（ Ⅲ ）, Tb （ Ⅲ ）, Dy （ Ⅲ ） emit weak fluorescence. The phenomenon was interpreted by electron-effect and energy-matching mechanism. Energy transfer mechanism of the luminescence in the complex was discussed.

Triboluminescent Complexes of Rare Earth Ⅱ.Mixed-ligand Complexes of Eu^(3+) with Thenoyltrifluoroacetone and Pyridine-N-Oxide or its Substitutive Derivatives

Five triboluminescent mixed-ligand complexes of Eu^(3+)with thenoyltrifluoroacetone(TTA)and pyridine-N-oxide or its substitutive derivatives have been prepared.They are all pale yellow crystalline com- pounds with the formula of Eu(TTA)_3·L(L=py NO.2-pie NO,3-pie NO,4-pic NO,bipy N_2O_2).Their physico-chemical properties have been studied with conductometry,UV and IR absorption and fluorescence spectroscopy.Once the complexes are touched or rubbed by a glass rod,they emit strong red triboluminescent light which is similar to the characteristic fluorescence of Eu^(3+).

Synthesis, Characterization and Properties of N,N′-Bis(6-methyl-2-pyridine-N-oxide)-1,3-Propane and Europium and Terbium Complexes

A new ligand, N,N′-Bis(6-methyl-2-pyridine-N-oxide)-1,3-propane (L), and some binary lanthanide complexes (Ln=Eu^(3+), Tb^(3+)) were synthesized and characterized in detail. The composition of the binary complexes was determined as LnL(NO_3)_3. They are 1∶1 electrolytes in DMF. The complexes have strong characteristic line fluorescence emission spectra, and it is also found that TbL(NO_3)_3 complex has stronger luminescence intensity than EuL(NO_3)_3 in solid state and in methanol.

TIME RESOLVED SPECTRA OF Eu(MBA)_3 PHEN COMPLEXES

Time-resolved fluorescence spectra of europium methylbenzoates (MBA)with 1,10-phenanthroline(phen)have been measured at room temperature.For each of the europium chelates,where the ligand triple states lie above the ~5D_1 level of Eu^(3-),the spectra providc evidence that the Eu^(3-) ~5D_0 state is populated by nonradiative energy transfer from the higher-lying ~5D_1,state.The relaxation time for energy decay from ~5D_1 state is measured in the microcrystals to bc of the order of a few microseconds.It is suggested that the ligand C=0 and C=C stretching vibrations and Eu-O vibrations,chclate ring and benzene ring vibrations make important contributions to the relaxation process.The ~5D\-1—~5D\-0 relaxation time of Eu- (p-MBA)_3phen is shorter than those of Eu(m-MBA)_3phen and Eu(o-MBA)_3phen since nonradiative degradation to ~5D_0 from ~5D_1 appears to be more strongly influenced by the E_u^(3+)sites in the former.

Syntheses and Crystal Structure of Nine-Coordinate Mononuclear Na[ EuⅢ (edta)(H2O)3] · 4H2O and Binuclear Na4[Eu2Ⅲ(Httha)2]·10H2O Complexes

The crystal and molecular structures of the Na[Eu Ⅲ (edta) ( H2 O) 3] · 4H2O ( edta = ethylenediaminetetraacetic acid) and Na4[Eu2Ⅲ (Httha)2] · 10H2 O ( ttha = triethylenetetraminehexaacetic acid) complexes were determined by single-crystal X-ray structure analyses.The crystal of Na[ EuⅢ (edta) (H2O)3] · 4H2O belongs to orthorhombic crystal system and Fdd2 space group.The crystal data are as follows: a = 1.9415 (15)nm, b = 3.544(3 )nm, c = 1.203(9)nm, V = 8.327(5)nm3, Z = 16, M = 589.27, Dc= 1.880 g· cm-3, μ= 3.108mm-1 and F(000) = 4704.The final R and wR values are 0.0312 and 0.0750 for 2091[I ＞ 2.0σ (I)] reflections, and 0.0344and 0.0766 for all 3932 unique reflections, respectively.The[EuⅢ (edta) (H2O) 3] - anion has a nine-coordinate pseudo-monocapped square antiprismatic structure in which the nine coordinate atoms, two N and seven O, are from one edta ligand and three water molecules.The crystal of Na4[Eu2Ⅲ (Httha)2] · 10H2O belongs to orthorhombic system and Pccn space group.The crystal data are as follows: a = 2.610(3)nm, b = 2.089(3)nm, c = 2.239(3)nm, V =12.208 ( 28 ) nm3, Z = 8, M = 1548.92, Dc= 1.686g·cm-3,μ = 2.115 mm-1andF(000) = 6272.Thefinal R and wR are 0.0625 and 0.1091 for 9834[I ＞ 2.0σ(I)] reflections, and 0.1608 and 0.1471 for all 37818 unique reflections, respectively.The whole complex molecule is composed of two close parts in which each one has a nine-coordinate structure with distorted monocapped square antiprismatic prism.The ttha ligand in the[Eu2Ⅲ (Httha)2] 4- anion coordinates to one Eu Ⅲ ion with three N atoms and four O atoms and to the other Eu Ⅲ ion with two O atoms.

STUDIES ON LANGMUIR-BLODGETT FILM OF METAL COMPLEXES(Ⅰ)-PREPARATION AND CHARACTERIZATION OF THE LB FILM OF N-HEXADECYL PYRIDINIUM TETRAKIS(1-PHENYL-3-METHYL-4-BENZOYL-PYRAZOL-5-ONE)EUROPIUM,C_5H_5NC_(16)H_(33)Eu(PMBP)_4

The LB film of the title complex was prepared by dropping a benzene solution of the title complex on the surfaceof water subphase at 25±1℃.The film was deposited in Z type on various hydrophilic pretreated substrates ofquartz,CaF;and electronic conductive glass for different purposes.The π-A curve of the film shows that thecross section per molecule is 125;,which indicates that the alkyl chain of the molecule is basically perpendiculalto the surface of the substrate.UV,IR spectra and transmission electronic microscopy of the film were also obtained.

Syntheses and Structural Studies of Nine-Coordinate Mononuclear K[Eu~Ⅲ(edta)(H_2O)_3]·3.5H_2O and Binuclear K_4[Eu~~Ⅲ__2(Httha)_2]·13.5H_2O Complexes

The crystal and molecular structures of K[Eu~Ⅲ(edta)(H_2O)_3]·3.5H_2O (H_4 edta=ethylenediaminetetraacetic acid) and K_4[Eu~~Ⅲ__2(Httha)_2]·13.5H_2O (H_6 ttha=triethylenetetraminehexaacetic acid) complexes were determined by single-crystal X-ray structure analyses. The crystal of K[Eu~Ⅲ(edta)(H_2O)_3]·3.5H_2O complex belongs to orthorhombic crystal system and Fdd2 space group. The crystal data are as follows: a=1.9849(6)nm, b=3.5598(11)nm, c=1.2222(4)nm, V=8.636(5)nm^3, Z=16, M=596.37, D_c=1.835 g·cm^(-3), μ=3.166 mm^(-1) and F(000)=4752. The final R and wR values are 0.0269 and 0.0692 for 2936 [I>2.0σ(I)] reflections, and 0.0317 and 0.0708 for all 7284 unique reflections, respectively. The [Eu~Ⅲ(edta)(H_2O)_3]-complex anion has a nine-coordinate pseudo-monocapped square antiprismatic structure in which the nine coordinate atoms, two N and seven O are from one edta ligand and three water molecules. The crystal of the K_4[Eu~Ⅲ_2(Httha)_2]·13.5H_2O complex belongs to monoclinic system and P2(1)/n space group. The crystal data are as follows: a=1.1337(3) nm, b=2.5753(6) nm, c=2.2138(6) nm, β=102.871(5)°, V=6.301(3) nm^3, Z=4, M=1682.33, D_c=1.773 g·cm^(-3), μ=2.339 mm^(-1) and F(000)=3404. The final R and wR are 0.0514 and 0.0906 for 11144 [I>2.0σ(I)] reflections, and 0.0976 and 0.1068 for all 26048 unique reflections, respectively. The complex molecule is composed of two close parts in structure. Every part around the Eu~Ⅲ ion in the [Eu~~Ⅲ__2(Httha)_2]^(4-) complex anion has a nine-coordinate structure with distorted monocapped square antiprismatic prism, in which the ttha ligand coordinates to one central Eu~Ⅲ ion with three N atoms and four O atoms and to the other Eu~Ⅲ ion with two O atoms.

高压水蒸气对β-Li_(2)TiO_(3:)Eu^(3+)荧光粉的全谱发光性能影响

采用水热法制备荧光粉前驱体后通过高温煅烧的方法,合成了由电偶极跃迁主导的高色纯度的β-Li_(2)TiO_(3):Eu^(3+)红色荧光粉.设计了适用于DHT11的拓扑电路,对荧光粉体湿度和温度进行测试.研究发现,高压腔体中加水量为5 mL,β-Li_(2)TiO_(3):0.5 mol%Eu^(3+)的相对湿度可达81%RH.在波长为396 nm的近紫外光激发下,β-Li_(2)TiO_(3):0.5 mol%Eu^(3+)发射由电偶极跃迁主导的613 nm的红光,荧光寿命为773.36μs,高压水蒸气处理对β-Li_(2)TiO_(3):0.5 mol%Eu^(3+)的电偶极跃迁发射峰和磁偶极跃迁发射峰位置没有变化,但发射峰强度增强并且荧光寿命降至386.81μs.高压水蒸气高压处理后的荧光粉色坐标x=0.47,y=0.51,色温为3300 K,红光色纯度为96.6%,比高压处理前显示出更优异的显色性能.高压水蒸气处理后的β-Li_(2)TiO_(3):0.5 mol%Eu^(3+)电偶极跃迁谱线强度参数Ω_(2)增加至4.21×10^(-19)cm^(2),^(5)D_(0)→^(7)F_(2)跃迁的荧光分支比β2也增加至96.9%,而量子效率η减小至57%,证实了湿度对荧光粉的发光效率具有极大的影响.

Eu(Ibu)_(3)phen配合物的合成表征及发光性

以药物布洛芬为第一配体,稀土离子Eu(Ⅲ)为中心离子,采用溶剂法合成了Eu^(3+)、布洛芬(Ibu)和邻菲罗啉(phen)的稀土-布洛芬药物配合物Eu(Ibu)3phen,采用元素分析、紫外光谱、红外光谱对配合物进行了初步结构表征,并研究了配合物的荧光性能.结果表明,该合成方法简单,Eu(Ibu)_(3)phen产率较高,配合物Eu(Ibu)_(3)phen的荧光发射光谱在612 nm出现Eu离子强特征荧光发射峰.该配合物有较好的发光性能,可作为安全环保的荧光材料.

基于Eu^(3+)-生物质碳量子点探针的比率型荧光传感体系检测盐酸四环素

该文以橙皮为原料制备的碳量子点(CDs)与铕离子(Eu^(3+))构建双发射比率型荧光探针(Eu^(3+)-CDs)并用于抗生素盐酸四环素的检测。在370 nm激发波长下,Eu^(3+)-CDs荧光探针在425 nm处出现较强的蓝色荧光峰,在617 nm处出现较弱的红色荧光峰。随着盐酸四环素浓度的逐渐增大,Eu3+与盐酸四环素螯合形成的配合物增多,在425 nm处的CDs荧光(I_(F425))逐渐减弱,而617 nm处铕配合物的荧光(I_(F617))逐渐增强,可基于荧光强度比I_(F617)/I_(F425)的变化对盐酸四环素进行测定。考察了Eu^(3+)的浓度、pH值和反应时间对探针荧光强度的影响。在最佳条件下,该双发射比率型荧光探针对盐酸四环素具有特异性识别能力,荧光强度比(I_(F617)/I_(F425))与盐酸四环素浓度在10~100µmol/L范围内存在良好的线性关系,相关系数r^(2)=0.9926,检出限为5.09µmol/L。该方法成功用于猪肉中盐酸四环素含量的检测,加标回收率为102%~110%,相对标准偏差为0.20%~2.4%,具有较好的实用性。

Bi^(3+)、Eu^(3+)共掺杂La_(4)GeO_(8)荧光粉的制备及可调发光

为了开发出高效稳定的单一基质白光发射荧光材料,本工作通过高温固相法成功合成了一系列La_(4)GeO_(8)∶Bi^(3+),Eu^(3+)荧光粉样品,并通过X射线衍射、室温光谱、变温光谱等手段研究了实验样品的结构与发光性能。研究发现,Bi^(3+)离子在该结构中占据两种不同的格位(Bi^(3+)(Ⅰ)和Bi^(3+)(Ⅱ)),且在紫外光激发下呈现两个峰值分别在475 nm和620 nm的宽带发射。对于Bi^(3+)、Eu^(3+)共掺样品,由于Bi^(3+)(Ⅰ)与Eu^(3+)之间的竞争吸收、Bi^(3+)(Ⅰ)至Bi^(3+)(Ⅱ)以及Bi^(3+)(Ⅱ)至Eu^(3+)的能量传递作用,可实现蓝色至红色、橙红色至红色的可调发光。特别地,样品La_(4)GeO_(8)∶0.07Bi^(3+),0.06Eu^(3+)在313 nm光激发下可获得CIE值为(0.335,0.319)的优异白色发光。此外,该白光发射材料具有较佳的发光热稳定性,当温度升高至380 K时,发光积分强度仍然为室温的59%,表明其在白光二极管上具有潜在的应用价值。

用于痕量监测Zr^(4+)、Cr_(2)O_(7)^(2-)、Fe^(3+)、HPO_(4)^(2-)和指纹识别的功能化Eu^(3+)/Tb^(3+)配位聚合物荧光探针的构筑

采用芳香族π共轭及含氮原子有机连接剂,合成同构铽、铕发光配位聚合物(CPs){[Eu(PLIA)_(1.5)(H_(2)O)_(2)]·H_(2)O}_(n)(1)和{[Tb(PLIA)_(1.5)(H_(2)O)_(2)]·H_(2)O}_(n)(2),其中H_(2)PLIA=5-((吡啶-4-基甲基)氧基)苯-1,3-二甲酸。对合成的配合物进行了结构测定、表征和荧光痕量识别实验研究。2个同构配合物具有理想的三维框架结构,π…π堆积及氢键等弱相互作用增强了其化学稳定性;表征显示配位聚合物1和2具有良好的荧光性质、结晶性、热力学稳定性及结构完整性,可作为荧光传感的材料。1和2对水溶液中的Zr^(4+)、Cr_(2)O_(7)^(2-)和Fe^(3+)、HPO_(4)^(2-)具有选择性好、灵敏度高的荧光识别能力,其检出限分别为0.139μmol·L^(-1)(1,Zr^(4+))、0.626μmol·L^(-1)(1,Cr_(2)O_(7)^(2-))、0.430μmol·L^(-1)(2,Fe^(3+))、1.36μmol·L^(-1)(2,HPO_(4)^(2-))。探究了1和2作为探针的荧光猝灭机理。更有趣的是,1和2具有指纹识别性能,其荧光指纹纹路清晰连贯,细节明显,可被清晰观察。

Eu^(3+)、Sm^(3+)共掺双钙钛矿Gd_(2)ZnTiO_(6)荧光粉的发光性能及其热稳定性

具有高热稳定性的红色发光材料对于改善光转换型白光LED器件的性能具有重要意义。引入敏化剂来实现能量传递至发光中心从而提高荧光粉热稳定性是开发高效WLED用荧光粉的有效策略。本文以双钙钛矿结构化合物Gd_(2)ZnTiO_(6)为基质,制备了系列Sm^(3+)、Eu^(3+)激活的红色荧光粉,并讨论了Sm^(3+)→Eu^(3+)的能量传递过程,证实了这一过程对于该基质单一Eu^(3+)激活荧光粉热稳定的改善作用。双掺样品在150℃时的发光强度保持在室温时的74%。这一结果为离子间的能量传递可有效抑制荧光粉热猝灭的理论提供了依据。

NaCa_(2)Mg_(2)(VO_(4))_(3)∶Eu^(3+)颜色可调荧光粉的熔盐法合成及其发光性能研究

以廉价的NaCl为熔盐,采用熔盐法合成了NaCa_(2-x)Mg_(2)(VO_(4))_(3)∶xEu^(3+)(0≤x≤0.10)系列颜色可调荧光粉,系统研究了合成条件、Eu^(3+)掺杂对样品结构及发光性能的影响。结果表明,反应温度为800℃、反应时间为0.5 h、原料与熔盐的质量比为1∶3是合成NaCa_(2)Mg_(2)(VO4)_(3)的适宜反应条件,所得样品为NaCa_(2)Mg_(2)(VO_(4))_(3)纯相,且结晶度高。样品微观形貌随着反应温度的升高由珊瑚状演变为表面光滑的不规则多面体。Eu^(3+)掺杂对NaCa_(2)Mg_(2)(VO_(4))_(3)的晶体结构影响较小,但对其发光性能影响较大。随着Eu^(3+)浓度(x)的增加,VO_(4)^(3-)的特征发射带强度逐渐减弱;而Eu^(3+)的特征发射峰强度先增大后减小,当x=0.06时,达到最大。故通过改变Eu^(3+)浓度,可对样品的发光颜色进行调制,从绿色可调制为黄绿色、黄色、黄白色、橙红色。荧光光谱与荧光寿命分析表明,NaCa_(2)Mg_(2)(VO_(4))_(3)∶Eu^(3+)体系中存在VO43-到Eu^(3+)的能量转移过程,能量转移效率约为23%;热稳定性分析结果表明,当温度从室温(298.15 K)升高到398.15 K时,NaCa_(1.94)Mg_(2)(VO_(4))_(3)∶0.06Eu^(3+)荧光粉在614 nm处的主发射峰强度可保留起始值的68.4%,表现出良好的热稳定性。

Modeling time-dependent mechanical behavior of hard rock considering excavation-induced damage and complex 3D stress states

To investigate the long-term stability of deep rocks,a three-dimensional(3D)time-dependent model that accounts for excavation-induced damage and complex stress state is developed.This model comprises three main components:a 3D viscoplastic isotropic constitutive relation that considers excavation damage and complex stress state,a quantitative relationship between critical irreversible deformation and complex stress state,and evolution characteristics of strength parameters.The proposed model is implemented in a self-developed numerical code,i.e.CASRock.The reliability of the model is validated through experiments.It is indicated that the time-dependent fracturing potential index(xTFPI)at a given time during the attenuation creep stage shows a negative correlation with the extent of excavationinduced damage.The time-dependent fracturing process of rock demonstrates a distinct interval effect of the intermediate principal stress,thereby highlighting the 3D stress-dependent characteristic of the model.Finally,the influence of excavation-induced damage and intermediate principal stress on the time-dependent fracturing characteristics of the surrounding rocks around the tunnel is discussed.

Sr_(2)InP_(3)O_(11):Eu^(3+)红色荧光粉的发光性能及占位影响

红色荧光粉是提高发光二极管(LED)显色指数、降低色温的重要组分。本文选择具有红色特征发射的Eu^(3+)作为激活剂离子,以新型磷酸盐Sr_(2)InP_(3)O_(11)为荧光粉基质,通过高温固相反应合成了系列Sr_(2-x)InP_(3)O_(11):xEu^(3+)(简化为S_(2-x)IP_(3):xEu^(3+))和Sr_(2)In_(1-x)P_(3)O_(11):xEu^(3+)(简化为S_(2)I_(1-x)P_(3):xEu^(3+))荧光粉。利用XRD、室温及变温PL光谱、量子效率和荧光寿命,详细研究了所制备荧光粉的光致发光性能及其受阳离子位点(Sr位和In位)的影响规律。研究结果表明,这两类荧光粉在254nm和393nm激发下均可发出明亮的橘红光(593nm和612nm主导)。此外,所合成的荧光粉具有较好的色稳定性和热稳定性,表明其在荧光粉转换型白光LED照明和显示领域具有一定的发展潜力。

Dy^(3+)/Eu^(3+)双掺杂CaLaGa_(3)O_(7)颜色可调荧光粉的制备与发光性能

本文采用高温固相法成功制备了一系列Eu^(3+)单掺和Dy^(3+)/Eu^(3+)双掺CaLaGa_(3)O_(7)单基质荧光粉。通过X射线衍射和发射光谱对荧光粉的物相及发光性能进行了表征。结果表明,所制备的样品均为四方结构,与基质晶体一致,表明成功合成了Eu^(3+)单掺和Dy^(3+)/Eu^(3+)双掺杂的CaLaGa_(3)O_(7)荧光粉。在波长393 nm近紫外光激发下,Eu^(3+)∶CaLaGa_(3)O_(7)表现出Eu^(3+)的特征红光发射(5 D0→7 F2),并且发光纯度高达100%。共掺Dy^(3+)之后,Dy^(3+)/Eu^(3+)双掺CaLaGa_(3)O_(7)荧光粉不仅可以被波长393 nm的光激发还可以被波长348 nm的光激发。不管是哪个波长的光激发,Dy^(3+)/Eu^(3+)∶CaLaGa_(3)O_(7)发射光谱同时包含了Eu^(3+)的特征红光发射和Dy^(3+)的特征黄光发射(4 F_(9/2)→6 H_(13/2))。通过对发射谱和荧光寿命分析得出,双掺荧光粉中Dy^(3+)和Eu^(3+)之间存在有效的能量传递过程。进一步计算了各个样品对应的色坐标,结果表明当激发波长由348 nm改变为393 nm时,色坐标整体上从黄绿色区域移动到黄橙光区域。因此,Dy^(3+)/Eu^(3+)∶CaLaGa_(3)O_(7)是一种光色可调发光材料,在显示和固态照明方面具有良好的应用前景。

红色荧光粉CaWO_(4)∶Eu^(3+),Bi^(3+)的制备和光学性能的研究

本文采用高温固相法合成了一系列红色荧光粉CaWO_(4)∶Eu^(3+),Bi^(3+)。通过X射线衍射仪、扫描电子显微镜和荧光分光光度计等手段,对样品的晶体结构、微观形貌、光学性能、能量传递方式、荧光寿命和热稳定性进行了表征。结果表明,当Eu^(3+)和Bi^(3+)的掺杂浓度分别为7%和2%时(摩尔分数),荧光粉红色发光(615 nm)最强,理论计算得到荧光粉的平均颗粒尺寸为50.27 nm,这与电子显微镜观察结果相符合。能量传递方式以电偶极-电四极相互作用为主,对CaWO_(4)∶7%Eu^(3+),yBi^(3+)(y=0~6%)系列荧光粉进行了荧光寿命测量,发现它们荧光寿命基本相同,都在0.56 ms左右。对CaWO_(4)∶7%Eu^(3+),2%Bi^(3+)荧光粉在不同温度下的光谱进行比较,并且计算相应的色度坐标,当温度升高时,色度坐标整体左移,发光强度有所变弱,但整体来说热稳定性较好。较好的热稳定性和明亮红光发射表明该荧光粉可以作为潜在商用红光荧光粉。