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| 1 | Nano-preparation promoting effectively luminescent properties of one-dimensional rare earth oxides显示文摘Rare earth (La,Nd and Tb) oxides with one-dimensional micro/nanostructures were synthesized hydrothermally under facile and mild conditions with two surfactants, and characterized by X-ray diffraction (XRD), thermal gravimetry (TG), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and photoluminescence. The results showed that the synthesized rare earth oxides behaved regular nano-and micro-scale structures. And the morphologies of samples depended on the radii of rare earth ions, with the help of two surfactants of sodium dodecyl sulfonic and PEG 600. Nanocrystalline La2O3:Eu3+ possessed good photoluminescence (PL) property and might be used as a nanosized phosphor, its PL intensity was altered by the doping Eu3+ concentration and the optimum concentration of Eu3+ was 3 mol.%. In comparison with bulk Eu3+/La2O3, Eu3+/nano-La2O3 showed better photoluminescence property, nearly equal to that of nanocrtstal-line La2O3:Eu3+. Tb4O7 microwires showed interesting photoluminescence properties. | 李俊峰 卢冠忠 谢宝庚 王艳芹 郭耘 郭杨龙 | 2012 | Journal of Rare Earths2012，30，11： | 5 |
| 2 | 白光LED用LaPO_4:Eu^(3+)红色荧光粉的合成与表征显示文摘利用水热法制备了性能稳定的红色荧光粉LaPO4:Eu3+,同时研究了不同的Eu3+浓度、煅烧温度对荧光粉发光性能的影响.通过X射线粉末衍射(XRD)和扫描电子显微镜(SEM)来表征荧光粉的晶体结构和颗粒大小及形貌;用激发光谱和发射光谱以及荧光衰减曲线来表征荧光粉的荧光性能.结果表明:未煅烧时前躯体主要是六方晶相LaPO4·0.5H2O,煅烧温度在900℃时,所制备样品为单斜相LaPO4:Eu3+;SEM图像显示5 at.%Eu3+掺杂LaPO4呈椭球形,颗粒长约为500 nm,宽约为300 nm.最大发射波长和激发波长分别为592 nm和393 nm,发射光谱中592 nm和612 nm的发射峰对应的是Eu3+离子的5D0→7F1和5D0→7F2跃迁.其荧光寿命为3.32 ms. | 廖金生 周单 杨斌 张骞 周全惠 武淑珍 | 2012 | 有色金属科学与工程2012，3，4： | 4 |
| 3 | Structural and luminescence studies of europium ions in lithium aluminium borophosphate glasses显示文摘Eu3+ doped borophosphate glasses with the chemical composition 20Li2O-30Al2O3-10B2O3-40P2O5-xEu2O3(where x=0.05 mol.%, 0.1 mol.%, 1.0 mol.%, 1.5 mol.% and 2.0 mol.%) were prepared by conventional melt quenching technique. The structural and luminescence properties of the prepared Eu3+ doped borophosphate glasses were studied and compared with reported results. The XRD pattern showed the amorphous nature of the prepared glasses. Whereas, the FTIR spectra revealed the vibrational modes in the prepared glasses. The bonding parameters( β and ?) were calculated through the excitation spectra. Judd–Ofelt(J–O) intensity parameters were calculated from the emission spectra and were used to determine transition probability(A), stimulated emission cross-section(σE P), radiative lifetime(τR) and branching ratios(βexp) for the transition 5D0→7Fj(j=1, 2, 3 and 4) of Eu3+ ions. Furthermore, the luminescence intensity ratio(R) of 5D0→7F2 to 5D0→7F1 transition was also calculated. Transition 5D0→7F2 had the highest value of stimulated emission cross-section and branching ratios and the results were comparable with the reported values. This indicated that the present glass is promising host material for Eu3+ doped fiber amplifiers. | Poh Sum Wong Ming Hua Wan Rosli Hussin Hendrik O.Lintang Salasiah Endud | 2014 | Journal of Rare Earths2014，32，7： | 3 |
| 4 | Eu^(2+)激活的Ba_(5-x)Sr_x(PO_4)_3 Cl的发光性质显示文摘采用高温固相法合成了Eu^(2+)激活的Ba_(5-a)Sr_x(PO_4)_3Cl(x=0,1,2,3,4,5)蓝色发光粉。样品的XRD衍射光谱表明,随着Ba^(2+)浓度的增加,衍射峰向小角度方向移动。所有样品的激发光谱都存在两个激发峰,随着Ba^(2+)浓度的增加,两个尖峰逐渐靠近,同时激发峰强度降低,这种现象可以通过位形坐标解释。激发和发射光谱及发射光谱色坐标数据表明,Eu^(2+)掺杂的Ba_3Sr_2(PO_4) | 任国强 杨艳民 马淑媛 | 2011 | 发光学报2011，32，5： | 2 |
| 5 | 低热固相反应法合成掺Eu^(3+)的双磷酸盐KZnLa(PO_4)_2及其光致发光性能研究显示文摘在表面活性剂PEG-400的存在下,于室温下研磨ZnSO4.7H2O,La(NO3)2和K3PO4.3H2O的混合物,使其进行固态反应。研磨结束后,将反应混合物在60℃下保温4 h。用去离子水洗去混合物中的可溶性无机盐,在100℃下烘干,即得纳米晶KZnLa(PO4)2的前驱体。煅烧前驱体得到纳米晶KZnLa(PO4)2。前驱体和它的煅烧产物通过热重和微分热分析,傅立叶变换红外光谱和X-射线粉末衍射表征。结果表明,前驱体仅是结晶度低的化合物;前驱体在高于700℃下煅烧2 h,得到具有高结晶度的纳米晶KZnLa(PO4)2。以相同方法合成了KZnLa0.94Eu0.06(PO4)2,在900℃下煅烧2 h,得到的KZnLa0.94Eu0.06(PO4)2在紫外线照射下是一种发射红光的荧光粉。 | 黄进文 苏鹏 吴文伟 吴学航 | 2011 | 应用化工2011，40，1： | 1 |
| 6 | Synthesis and luminescence characteristics of terbium(Ⅲ) activated NaSrBO_3显示文摘The thermoluminescence (TL) and photoluminescence (PL) properties of the phosphor NaSrBO 3 :Tb 3+ were reported and discussed. The combustion technique was used for the synthesis of polycrystalline samples of NaSrBO 3 :Tb 3+ . The TL glow curve of the compound had a simple structure with a single peak at 434 K. TL sensitivity of the phosphor was found to be more than that of (LiF:Mg,Cu,P). The TL glow curve was studied as a function of concentration of dopant and dose of gamma ray irradiation. The kinetic parameters of the thermoluminescence of NaSrBO 3 : Tb 3+ were calculated employing the peak shape method. The photoluminescence (PL) properties of Tb 3+ doped in NaSrBO 3 were studied over the 200-400 nm excitation range. The excitation spectra of NaSrBO 3 :Tb 3+ consisted of single narrow band peaking at about 236 nm. The emission spectra monitored at 236 nm excitation consisted of a series of sharp lines peaking at 489, 544, 586 and 622 nm corresponding to the 5 D 4 → 7 F j (j=3,4,5,6) transitions within the 4f 8 configurations of Tb 3+ . | P.A. Nagpure S.K. Omanwar | 2012 | Journal of Rare Earths2012，30，9： | 1 |
| 7 | Eu^(3+)掺杂In_2O_3纳米纤维的制备及其发光性能研究显示文摘利用静电纺丝和高温煅烧相结合的方法制备了一维Eu^(3+)掺杂In_2O_3无机纳米纤维,并对其发光性能和发光机理进行研究。借助SEM、TG、XRD和EDX对样品的形貌、热分解、晶相和成分进行分析,利用荧光分光光度计测试了样品在室温下的光致发光性能。结果显示,静电纺Eu^(3+)掺杂前驱体纤维成型良好,经700℃煅烧5 h制备的In_2O_3∶Eu^(3+)纳米纤维仍保持纤维状形貌,但纤维直径与前驱体纤维相比明显减小;样品XRD衍射峰均与立方铁锰矿型In2O3的衍射峰一致,没有出现Eu_2O_3的衍射峰,样品EDX能谱分析表明煅烧后样品中含有In、O、Eu元素,且Eu含量与实际掺杂浓度接近。样品的室温发射光谱显示,经290 nm光激发后,在597 nm、612 nm和629 nm处出现Eu3+的发射峰,其中612 nm处的发射峰强度最大。 | 王晓玲 逄增媛 李大伟 魏取福 黄锋林 | 2016 | 稀土2016，37，2： | 1 |
| 8 | Solvent induced shape change in CePO_4:Dy^(3+) nanophosphors and effect of metal ions: A photoluminescence study显示文摘The influence of different solvents and metal ions (Li+, Ba2+, Bi3+) on the crystallization behaviour, morphology and enhancement in photoluminescence intensity of Dy3+ doped CePO4 were investigated. Highly crystalline luminescent nanophosphors of CePO4:Dy3+ re-dispersible in polar solvents were successfully prepared via a simple polyol route at 140 ℃. As-prepared Dy3+ doped CePO4 nanophos-phors prepared in EG and DMF appeared to have crystalline monoclinic phase but exhibited hexagonal phase when prepared in water and water mixed solvents. The hexagonal phase transformed to monoclinic phase after heating at 900 ℃. TEM study revealed different shapes of the synthesized nanophosphors with change of solvents. The luminescence intensity of 4F9/2→6H15/2 at 478 nm (blue) was found to be more prominent than 4F9/2→6H13/2 at 572 nm (yellow). The introduction of metal ions (Li+, Ba2+ and Bi3+) in CePO4:Dy3+ led to considerable lumi-nescent enhancement. The nanophosphors were subsequently incorporated in polymer films of PVA which showed the characteristic emissions of Dy3+. It also served as an effective method to improve the performance of polymer materials and brought about novel properties in them. | Reena Okram N.Rajmuhon Singh | 2012 | Journal of Rare Earths2012，30，12： | 1 |
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