掺杂

We found out one kind of new orange-red long afterglow material La2O2S: Eu3+, Mg, Zr.2 In the phosphor Gd2O2S, Mg, Ti which was prepared by high-temperature solid-state method, the orange afterglow phenomenon can be seen after illuminated with UV light.3 Using the high-temperature solid-state method, Gadolinium oxysulfide phosphors doped with rare earth ions were synthesized. We can observe the red or orange phosphorescence in Gd2O2S doped with Eu3+, Sm3+, Tm3+, Yb3+, Dy3+, Er3+, Nd3+or Ho3+. This is a new result of the long afterglow phosphors research.4 Using the microwave radiation method, the new Sm3+ doped gadolinium oxysulfide phosphor, which has the orange-red long afterglow emission after illuminated with UV light or visible light, was synthesized for the first time.5 In fluorescent materials YOX doped with europium ions, the long afterglow phenomenon wasnt observed but the blue luminescence of Eu2+ and red luminescence of Eu3+ are simultaneously examined. This is a new result of the valence stability and change of Eu2+ in yttrium oxyhalide .We systematically studied the effects of the host, addition agents and reaction atmosphere on the valence change and fluorescence property of europium ions.

经过系统的研究总结得到以下的结论与成果： 1采用高温固相反应法合成了一系列稀土离子掺杂的硫氧化镧发光粉，发现了该体系中Eu~(3+)的长余辉发光，从而得到一种迄今未见文献报道的红色长余辉发光材料：La_2O_2S：Eu~(3+)，Mg，Zr； 2在Gd_2O_2S，Mg，Ti磷光粉中观察到橙色的长余辉发光现象； 3采用高温固相反应法合成了一系列稀土离子掺杂的硫氧化钆磷光粉，在掺杂Eu~(3+)、Sm~(3+)、Tm~(3+)、Yb~(3+)、Dy~(3+)、Er~(3+)、Nd~(3+)、Ho~(3+)的Gd_2O_2S中观察到红色和橙色长余辉发光； 4首次采用微波法合成了Gd_2O_2S：Sm~(3+)，Mg，Ti磷光粉，该磷光粉经紫外或可见光激发后呈现明显的橙红色长余辉发光； 5在YOX中同时观察到Eu~(2+)和Eu~(3+)的发射，系统研究了基质、添加剂及反应气氛对Eu价态和发光的影响。

In this research, we prepared Mo doped ZnO thin films on glass a substrate using co-sputtering to improve the conductivity of ZnO. The incorporated concentration of Mo atoms in ZnO was controlled by adjusting the aperture size of a shutter palaced in front of the Mo target. Textured morphology of ZnO film could be formed by attaching a metallic mask on the substrate.

本研究，欲以钼(Molybedeun， Mo)金属掺杂来提升氧ZnO薄膜之导电性，使用一般玻璃做为基板，利用射频溅射ZnO靶材及直流溅射Mo靶材进行共镀，Mo掺杂浓度是藉由钼靶前之挡板中的开口大小来控制，实验中改变基板温度(50℃、100℃、200℃、300℃)并进行镀膜后低压退火处理，藉此探讨Mo掺杂对於ZnO薄膜光电特性之影响，并找出最佳化制程参数。

We present here the results of our current efforts on: 1. ZnO nanoparticles of different sizes were prepared by hydrothermal method. The effect of polyethylene pyrrolidone addition on the particles size has been studied.

另外，在对ZnO进行掺杂研究时发现，掺杂物质的类型和其纳米范围内的量子尺寸效应对功能材料的性能有着很大的影响，所以对ZnO掺杂物质种类和尺寸的研究非常重要。

Further experimental investigation and theoretical analysis on the structure and properties of undoped and doped polyaniline are carried out by using several inspecting methods and instruments.

利用有机磺酸对三种形态的本征态聚苯胺进行了系统的掺杂，并通过理论计算和X射线光电子能谱对掺杂机理进行了分析研究，提出聚苯胺的掺杂是由两步完成的模型。

The TC of doped samples is lower than that of undoped sample,whilethe resistivities of doped samples is two orders higher than that of the undoped sample.

在磁性上的直接反映就是，在掺杂样品的居里温度与未掺杂的样品相比有明显的下降，由此表现在输运特性上的变化就是掺杂样品的电阻率均出现了高达两个数量级的增加。

The removal efficiency of L-acid and TOC of solution is 57% and 53% respectively when 0.4 g doped photocatalyst is applied in 100 mg·L-1 L-acid solution illuminated by visible light for 4 hours, while it is 13% and 10% respectively in the case of the undoped photocatalyst.

Mo6+的掺杂不影响负载催化剂的紫外光活性及对L-酸的吸附能力。100 mg·L-1的L-酸溶液加0.4 g催化剂，在可见光下反应4 h，掺杂催化剂对L-酸和溶液总有机碳的去除率分别为57%和53%，而未掺杂的催化剂去除率分别为13%和10%。

The coated article includes a glass substrate, a coating of an antimony doped tin oxide deposited on and adhering to the glass substrate and a coating of fluorine doped tin oxide deposited on and adhering to the surface of the coating of antimony doped tin oxide.

该涂敷制品包括玻璃底板、沉积和附着于该玻璃底板的锑掺杂的氧化锡涂层和沉积和附着于该锑掺杂的氧化锡涂层表面上的氟掺杂的氧化锡涂层。

This, it would be necessary only to make a little ball of earth that can be accurately weighed ; then we could easily calculate how many times the earth is larger than this little ball; and by so doing, we might tell, at one's fingerends, that — if we suppose the little earth-ball to weigh a hundred-weight — the whole globe, being so many times larger, must weigh so many hundred- weights.

可是，这样的做法极可能误导我们。因为一切取决于制造小球的物质。如果用酥松的泥土制造小球，它的重量就小；如果泥土中掺杂石头，它的重量就大一些；如果掺杂金属，取决于掺杂金属的种类，它的重量将更大。

It is indicated that none of the three dopants had effects on thegeometric properties of the T-grain.

随着掺杂量和掺杂位置的不同，掺杂后基本乳剂的感光度有不同的变化。

For example, when there is only an alcohol as dopant, fiber-shaped nanostructure polyaniline is easily formed; when there is only a metallic ion as dopant, sphere-shaped nanostructure polyaniline is easily formed; when alcohol and metallic ion coexist, fibrous and sphere-shaped nanostructure polyaniline are formed at the same time.

如仅有醇类掺杂剂存在下，苯胺易于聚合成纤维状纳米结构的聚苯胺；仅有金属离子掺杂剂存在下，苯胺易于聚合成球形纳米结构的聚苯胺；在醇和金属离子掺杂剂共存时，苯胺能同时聚合成纤维状和球形纳米结构的聚苯胺。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。