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浓度淬灭
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  concentration quenching
     Concentration Quenching of Eu~(2+) in Sr_4Al_(14)O_(25)∶Eu~(2+) Long Lasting Phosphor
     Sr_4Al_(14)O_(25):Eu~(2+)长余辉发光材料浓度淬灭研究
短句来源
     No concentration quenching phenomenon occurs in EuGa_2S_4, and the emission peak of Eu~(2+) ion is about at 544 nm.
     同时观察到EuGa2S4具有发光,发射峰靠近544nm,Eu在其中既是基质离子,也是激活剂离子,并没有出现浓度淬灭现象;
短句来源
     It was also found that the addition of La3+ disperses Ce3+ in the glass matrix, enhances the doping content of Ce3+ in the glasses and reduces the effect of concentration quenching.
     La3+的加入对Ce3+具有分散作用,有助于提高Ce3+的掺入量且降低了浓度淬灭效应。
短句来源
     The increase of Cr 3+ ion concentration will cause the increase of emission intensity of glass-ceramics, but it will cause concentration quenching and decrease the effective luminescent efficiency of Cr 3+ ion.
     Cr3 +离子浓度的增加使微晶玻璃的发光强度增加 ,但引起浓度淬灭 ,降低Cr3 +离子的有效发光效率。
短句来源
     The lattice sites that Eu~(2+) held in the host were investigated by Rietveld analysis and the concentration quenching mechanisms of Eu~(2+) in the phosphor were also studied.
     研究了Eu2+离子在铝酸盐基体中的发光行为以及浓度淬灭过程与淬灭机制。
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  concentration quench
     When the Eu~(3+) ion concentration changes in the range 0.1%~1.2%, the concentration quench is not observed.
     Eu~(3+)的发光在掺杂浓度为0.1%~1.2%的范围内没有出现浓度淬灭现象。
短句来源
     Doped style OLED can avoid the organic material’s concentration quench phenomenon in high concentration, and in the same time, the host material’s merit for good “form film” character and good charge transport characters can be utilized.
     掺杂既可以避免大多数有机发光材料在固态时存在的浓度淬灭,又利用了主体发光材料具有较好的载流子传输能力和较好成膜性的特点。
短句来源
  “浓度淬灭”译为未确定词的双语例句
     Full-concentration ErP_5O_(14) noncrystalline not only hasn't concentartion-quenching of main fluorescent line but also exists stronger energy transfer resulted from its unique crystalline structure.
     全浓度ErP_5O_(14)非晶由于其独特的晶体结构,使其重要的荧光线即未浓度淬灭,又存在较强的能量传递现象。
短句来源
     Therefore the yellow emission is prominent in the emission spectrum. Because the increase in Dy3+ concentration will cause cross-relaxation between the transitions 4F9/2— 6F3/2 and eHi5/2—6Fu/2, the quenching of Dy3+ luminescence occurs at low concentration lmol%.
     随着Dy~(3+)离子的浓度的增加会导致~4F_(9/2)→~6H_(15/2)→~6F_(11/2)之间的非辐射性驰豫,所以Dy~(3+)离子在浓度为1摩尔%时发生浓度淬灭
短句来源
     Secondly, the quenching concentration of Eu2+ and the best doped concentration of Dy3+ were affirmed by experiments and the quenching mechanism ofEu2+ was confirmed as the interaction of idol pole to idol pole on the basis of Dexter theory.
     其次研究了CaAl2Si2O8:Eu2+,Dy3+磷光体中Eu2+离子发光浓度淬灭和Dy离子最佳掺杂浓度问题,通过Dexter理论论证了Eu2+离子在磷光体中的浓度淬灭机制是电偶极一电偶极作用;
短句来源
     The quenching of Eu~(2+) center in the host consists of two different processes.
     Eu2+离子在Sr4Al14O25中的浓度淬灭包含两个不同的淬灭过程。
短句来源
     mL(r~2=0.9907,P<0.01),and was obviously quenched at the higher concentration with the fluorescence decreasing significantly(P<0.01).
     浓度较高时,蝶啶溶液对其荧光有着显著的浓度淬灭效应,其荧光强度随溶液浓度增加逐渐降低(P<0.01)。
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  concentration quenching
It is shown that the luminescence efficiency increases with an increase in the gallium sulfide content due to the displacement of the concentration quenching boundary of Nd3+luminescence with a change in the glass matrix composition.
      
Concentration Quenching of Luminescence of Rare-Earth Ions in Chalcogenide Glasses
      
We suggest that the increase in τ due to adsorption appreciably exceeds the concentration quenching of excited uranyl ions in the course of crystallization of deuterated sulfuric acid.
      
There is no concentration quenching of uranyl up to [UO22+] = 0.14 M.
      
The phenomenon of concentration quenching of the luminescence from donor ions in crystals of La1-xCexF3 solid solutions was studied.
      
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In this paper, the luminescence properties of Dy3+, Sm3+ and Ce3+ in M3La2(BO3)<(M=Ca, Sr, Ba) are reported.M3La2(BO3)4(M = Ca, Sr, Ba) are the compounds with orthorhombic structure. The site symmetry of RE3 + (RE = Dy, Sm, Ce) is lower in Ca3La2 (BO3)4 than that in Sr and Ba compounds .We observe that the energy levels of RE3 ±ions are much more split in Ca matrix.This is well corresponding with the relationship between the splitting of energy levels and site symmetry.The ratio, R = I4F9/2-66H13/2/I4F9/2-6H15/2,of...

In this paper, the luminescence properties of Dy3+, Sm3+ and Ce3+ in M3La2(BO3)<(M=Ca, Sr, Ba) are reported.M3La2(BO3)4(M = Ca, Sr, Ba) are the compounds with orthorhombic structure. The site symmetry of RE3 + (RE = Dy, Sm, Ce) is lower in Ca3La2 (BO3)4 than that in Sr and Ba compounds .We observe that the energy levels of RE3 ±ions are much more split in Ca matrix.This is well corresponding with the relationship between the splitting of energy levels and site symmetry.The ratio, R = I4F9/2-66H13/2/I4F9/2-6H15/2,of Dy3+emission is decreasing with the change of M2+ from Ca2 + to Ba2+. According to Table 1, the blue emission of Dy3 + is more intense than its yellow one in Ca matrix.Notice that, although the site symmetiy of Dy3+ in Sr and Ba matrices is the same, the R are different. This shows that the ratio of yellow to blue emission of Dy3 + is not only affected by the site symmetry, but also by the composition of the compounds.The charge transfer bands of Sm3+ move to longer wavelength with the change of M2 + (from Ca2+ to Ba2+). This phenomenon has been observed and discussed for Eu3 + in the same matrices. The 4f electron configurations of Sm3+, and Eu3+ arc 4f5 and 4f6 respectively. When get an electron from coordination anion, Eu3+ will become 4f7 state(half-filled), which is more stable than the 4f6 state for Sm3 + . Therefore, the energy of charge transfer band of Sm3+ is higher than that of Eu3+ in the same condition. Table 2 makes a comparison.The d-f emission bands of Ce3+ peak at 436 nm in Ca matrix and 424 nm in Sr and Ba compounds respectively.In Sr3La2(1-x)(BO3)4 : RE2x3+ ( RE = Dy, Sm, Ce ), the concentration quenching of Dy3+ and Sm3+ luminescence starts at x=0.02 and x = 0.04 respectively; Ce3+ has higher quenching concentration, no large quenching is observed when x amounts to 0.3.

本文报导了Dy~(3+),Sm~(3+)和Ce~(3+)离子在M_3La_2(BO_3)_4(M=Ca,Sr,Ba)基质中的激发与发射光谱;研究了Dy~(3+)离子黄蓝发射的相强度随基质化合物的组成和结构的不同而呈现的变化规律;讨论了Sm~(3+)离子电荷迁移激发带的能量与基质中近邻阳离子的关系并分析了Sm~(3+)和Eu~(3+)离子4f电子构型对电荷迁移带能量的影响。本文还给出了Dy~(3+),Sm~(3+)和Ce~(3+)离子发光的浓度淬灭值。

Full-concentration ErP_5O_(14) noncrystalline not only hasn't concentartion-quenching of main fluorescent line but also exists stronger energy transfer resulted from its unique crystalline structure. This paper researches the multi-photon absorption phenomenon of Er~(3+) ions in ErP_5O_(14) noncrystalline by 1.06μm laser of Nd~(3+): YAG pulse laser, proves that exists the direct ~4I_(15/2)→~2H_(11/2) two-photon absorption and sequential excitation of ~4I_(9/2)→~4F_(5/2) when laser power is stronger enough.

全浓度ErP_5O_(14)非晶由于其独特的晶体结构,使其重要的荧光线即未浓度淬灭,又存在较强的能量传递现象。本文用调Q的Nd~(3+)∶YAG 1.06μm脉冲激光,研究了ErP_5O_(14)非晶中Er~(3+)离子的多光子吸收现象,证明Er~(3+)离子吸收1.06μm激光导致了~4I_(15/2)→~2H_(11/2)的直接双光子吸收,并且在激光功率密度较大时,还会导致明显的相继~4I_(9/2)→~4F_(5/2)吸收而产生的相继激发三光子过程。

The different synthetic methods affect greatly the fluorescence properties of ionomers.With the increasing of rare earth metal ion content in system, the ionomers made by method I displayed typical concentration genching pattern. The fluorescence intensity reached a maximum at 4% ̄5% (mass) content of Eus ̄(3+) or 3% ̄4% (mass) content of Tb ̄(3+) and subsequently dacreased with the further increasins of Eu ̄(3+) and Tb ̄(3+) content in ionomers. The results provide supporting evidence that the ionomers have the ionic...

The different synthetic methods affect greatly the fluorescence properties of ionomers.With the increasing of rare earth metal ion content in system, the ionomers made by method I displayed typical concentration genching pattern. The fluorescence intensity reached a maximum at 4% ̄5% (mass) content of Eus ̄(3+) or 3% ̄4% (mass) content of Tb ̄(3+) and subsequently dacreased with the further increasins of Eu ̄(3+) and Tb ̄(3+) content in ionomers. The results provide supporting evidence that the ionomers have the ionic aberegates, in which the local concentration of Eu ̄(3+) and Tb ̄(3+) ions are much higher than that in the other regions. But the same fluoreeence action was not discovered in the Eu and Tb ionomers synthesized by method Ⅱ.

不同制备方法,即以丙烯醚丁酯与丙烯的共聚物为基础,经离子交联而制得的稀土离聚体(方法Ⅰ)及以丙烯酸丁酯与盐基性单体丙烯醚稀土盐共聚而制得的稀土离聚体(方法Ⅲ)在荧光性质上的差异,研究了不同结构因素对它们的荧光性质的影响规律。随着体系中稀土金属离子含量的增大,方法Ⅰ所得离聚体出现了浓度淬灭现象,而方法Ⅲ所得离聚体则无此现象,从一个侧而反映了其聚集态差别。

 
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