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exciton transition
相关语句
  激子跃迁
     Giant Faraday Rotation and Exciton Transition in Semimagnetic Semiconductor Cd_(1-x)Mn_xTe
     Cd_(1-x)Mn_xTe的巨大法拉第旋转与激子跃迁
短句来源
     Exciton Transition Energies in In x Ga 1- x As/InP SMQWs as a Function of Indium Composition
     In_xGa_(1-x)As/InP应变量子阱中激子跃迁能量随In组分的变化
短句来源
     The exciton transition 4T1 →6A1 of Mn2+ ions in quasi one-dimensional antiferro-magnet CsMnCl3·2H20 is very weak in intensity with a shorter lifetime due to the vibration-queching.
     在一维反铁磁体CsMnCl_3·2H_2O中,用D_2O代替其中的结晶水之后,对于~4T_1→~6A_1激子跃迁,观察到三种明显的效应:激子线红移18cm~(-1);
短句来源
     (3) In La_2O_3: Eu~(3+) nanowires, the exciton band blue-shifted greatly with the decrease of size due confinement effect, relative intensity of exciton decreased incomparison charge transfer band, which can be contributed to the more energy transfer from exciton transition to defects at the surface.
     (3) 在La_2O_3:Eu~(3+)纳米线中观察到随着尺寸减小,激子吸收带由于量子限域效应发生显著蓝移,并且与电荷迁移带的激发强度比随尺寸减小而降低。 这被归因于激子跃迁与表面缺陷间更大程度的能量传递。
短句来源
     Organic electrophosphorescent devices can be used to circumvent the limitation in quantum efficiency of organic electroluminescent devices due to the spin-forbidden of triplet exciton transition.
     有机电致磷光器件的设计和利用,可以突破由三线态激子跃迁自旋禁阻引起的有机电致荧光器件量子效率的限制。
短句来源
  激子跃迁
     Giant Faraday Rotation and Exciton Transition in Semimagnetic Semiconductor Cd_(1-x)Mn_xTe
     Cd_(1-x)Mn_xTe的巨大法拉第旋转与激子跃迁
短句来源
     Exciton Transition Energies in In x Ga 1- x As/InP SMQWs as a Function of Indium Composition
     In_xGa_(1-x)As/InP应变量子阱中激子跃迁能量随In组分的变化
短句来源
     The exciton transition 4T1 →6A1 of Mn2+ ions in quasi one-dimensional antiferro-magnet CsMnCl3·2H20 is very weak in intensity with a shorter lifetime due to the vibration-queching.
     在一维反铁磁体CsMnCl_3·2H_2O中,用D_2O代替其中的结晶水之后,对于~4T_1→~6A_1激子跃迁,观察到三种明显的效应:激子线红移18cm~(-1);
短句来源
     (3) In La_2O_3: Eu~(3+) nanowires, the exciton band blue-shifted greatly with the decrease of size due confinement effect, relative intensity of exciton decreased incomparison charge transfer band, which can be contributed to the more energy transfer from exciton transition to defects at the surface.
     (3) 在La_2O_3:Eu~(3+)纳米线中观察到随着尺寸减小,激子吸收带由于量子限域效应发生显著蓝移,并且与电荷迁移带的激发强度比随尺寸减小而降低。 这被归因于激子跃迁与表面缺陷间更大程度的能量传递。
短句来源
     Organic electrophosphorescent devices can be used to circumvent the limitation in quantum efficiency of organic electroluminescent devices due to the spin-forbidden of triplet exciton transition.
     有机电致磷光器件的设计和利用,可以突破由三线态激子跃迁自旋禁阻引起的有机电致荧光器件量子效率的限制。
短句来源
  “exciton transition”译为未确定词的双语例句
     DETERMINAtION OF HOMO-AND INHOMOGENEOUS BROADENING OF ELECTSO-TRANSMITTHNCE SPECTRA OF 11h EXCITON TRANSITION IN In_(0.53) Ga_(0.47)As/In_(0.52)Al_(0.48)As WIDE WELL AT HIGH ELECTRIC FIELD
     高电场下In_(0.53)Ga_(0.47)As/In_(0.52)Al_(0.
短句来源
     They are attributed to recombination of free exciton, transition of electron from Si(Ga) to Si (As) in GaAs and transition of electron of Si (Ga)in GaAs of well to ground state heavy hole in well in Valence band, respectively.
     而在1.529eV处的弱发光峰是GaAs阱层中Si(Ga)原子上的电子与价带量子阱中基态重空穴复合形成的。
短句来源
     The three of these bands are attributed to different exciton emission, the n=1 heavy-hole (HH) exciton transition, the n=1 light-heavy hole (LH) exciton transiton and n=1 HH exciton transition with the emission of two LO phonons, respectively.
     n=l轻-重空穴(LH)激子和n=IHH激子同时发射两个纵光学声子的复合发光,并且,; n=1HH激子发光可延续至室温.
短句来源
     Discovers,in observing the spectrum of Zn 1-x Cd xSe/ZnSe strained layer multiple quantum well photovoltage substrated by GaAs at atemperature of 18~300K, that (ZnCd)Se/ZnSe quantum well has an outstanding quantum confinement effect with exciton binding energy so great that exciton transition peak can be clearly seen even at room temperatures.
     在温度18~300K范围内测量了以GaAs为衬底的Zn1-xCdxSe/ZnSe应变层多量子阱的光电压谱.发现(ZnCd)Se/ZnSe量子阱具有显著的量子限制效应;
短句来源
     This UV emission is attributed to the recombination of donor bound excitons. Absorpti on and PL spectra at RT of Mg 0.08Zn 0.92O/ZnO heterostructure show th at two absorption edges and two emission peaks,respectively. The two peaks are co nsidered to be from the bound exciton transition of MgZnO and the free exciton t ransition of ZnO,respectively.
     在 Mg0 .0 8Zn0 .92 O/ Zn O样品中 ,观察到了分别来自于 Zn O层和 Mg Zn O盖层的发光和吸收 ,并将其归因于来自 Zn O层的自由激子和 Mg Zn O盖层的束缚激子发射
短句来源
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  exciton transition
The biexciton transition was observed on the low energy side of the exciton transition.
      
Under these conditions, we reproduc-ibly obtain InP layers showing linewidths of the donor-bound exciton transition at 5K around 0.25 meV and a mobility at 77K of about 7.0·104 cm2/Vs.
      
Photoluminescence excitation spectra reveal that the highest energy line is due to an intrinsic exciton transition, and that a splitting of this line observed fort ≥ 2 μm reflects the presence of two different regions of strain in the material.
      
The optical and photophysical characteristics of quantum-dimensional particles of CdS stabilized in water (the oscillator force of the first exciton transition, the forbidden band width, the conduction and valence band potentials) were determined.
      
Absorption spectra at 77° K near the direct (κ = 0) exciton transition are reported for deformed and undeformed single-crystal films of n-type Ge oriented on (111); Elliott's theory is applied.
      
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This paper is the third part of a theory of the coherent propagation of light in semiconductors. Based on the previous papers (Ⅰ) and (Ⅱ)[1], the Maxwell-Bloch equation describing the coherent propagation of light in semiconductors is derived; the equation is then used to discuss a number of possible effects of coherent propagation in both interband transitions and exciton transitions. In particular, the phenomena of self-induced transparency are analysed, and it is shown that the phenomena may occur...

This paper is the third part of a theory of the coherent propagation of light in semiconductors. Based on the previous papers (Ⅰ) and (Ⅱ)[1], the Maxwell-Bloch equation describing the coherent propagation of light in semiconductors is derived; the equation is then used to discuss a number of possible effects of coherent propagation in both interband transitions and exciton transitions. In particular, the phenomena of self-induced transparency are analysed, and it is shown that the phenomena may occur in the above two transitions.

本文是半导体中光的相干传播理论的第三部分。在前面两篇文章的基础上,推导了光在半导体中相干传播的Maxwell-Bloch方程;利用这组方程,讨论了带间跃迁和激子跃迁两种情况的许多可能的相干传播效应。文中特别着重分析了自感透明现象,证明了对于上述两种跃迁自感透明现象都是可能发生的。

The exciton transition 4T1 →6A1 of Mn2+ ions in quasi one-dimensional antiferro-magnet CsMnCl3·2H20 is very weak in intensity with a shorter lifetime due to the vibration-queching. Replacing H2O by D2O), three important effects have been observed: the exciton line is shifted to the red by 18cm-1, the intensity of the exciton is increased by almost one order, the lifetime is lengthened from 0.58 ms to 9.2 ms. These facts show that the vibration-quenching has been weakened. The experimental results...

The exciton transition 4T1 →6A1 of Mn2+ ions in quasi one-dimensional antiferro-magnet CsMnCl3·2H20 is very weak in intensity with a shorter lifetime due to the vibration-queching. Replacing H2O by D2O), three important effects have been observed: the exciton line is shifted to the red by 18cm-1, the intensity of the exciton is increased by almost one order, the lifetime is lengthened from 0.58 ms to 9.2 ms. These facts show that the vibration-quenching has been weakened. The experimental results are analysed by means of the theory of multi-phonon radiative and non-radiative transitions. It has been shown that the isotope substitution changes the spectrum of lattice vibration, and brings forth a great influence on the non-radiative transition. The electronphonon coupling intensity does not show any obvious change, and the Huang-Rhys factor remains constant. The phonon modes involved in the multi-phonon radiative transition are different from those involved in the multi-phonon nonradiative process, their average energies are quite different from each other.

在一维反铁磁体CsMnCl_3·2H_2O中,用D_2O代替其中的结晶水之后,对于~4T_1→~6A_1激子跃迁,观察到三种明显的效应:激子线红移18cm~(-1);激子讯号增强近一个数量级;激子寿命由0.58ms变为9.2ms,增加15倍。这后一种效应在文献中尚未见报道,它说明这种同位素替代使振动猝灭受到很大的减弱。利用多声子辐射和无辐射跃迁理论,讨论了实验结果。分析表明,同位素替代改变了晶格振动的频谱,对无辐射跃迁产生很大的影响。电声子耦合强度没有明显的变化,黄昆-Rhys因子基本保持常数。卷入多声子辐射跃迁的声子模和卷入无辐射跃迁的声子模是不相同的,其能量有相当大的差别:前一种声子模与H_2O振动没有很大关系;而后一种声子模却与H_2O振动紧密相关。

In this paper, we use an exciton-like model to account for the origin of the far infrared absorption lines in YxBa3-xCu2O7 systems. The far infrared absorption lines in this materials can be asigned to the transitions from three series of lines in an exciton energy level diagram. The results of calculated and measured are listed in Table 2, in which the good agreement between theoretical and experimental indicates that the model is acceptable and the far infrared absorption lines observed might...

In this paper, we use an exciton-like model to account for the origin of the far infrared absorption lines in YxBa3-xCu2O7 systems. The far infrared absorption lines in this materials can be asigned to the transitions from three series of lines in an exciton energy level diagram. The results of calculated and measured are listed in Table 2, in which the good agreement between theoretical and experimental indicates that the model is acceptable and the far infrared absorption lines observed might have the origin orther than phonons. The multi-line series assumption might be due to the multi-phase structure of the materials, and therefore, single phase structure might produce single line series transitions. Fig. 1 shows that the major difference between normal (3#, 4# ) and superconducting samples (1#,2# ) is the increase in intensities of peaks at 205 cm-1 and 237 cm-1 from the fomer to the latter. While in the normal sample there two lines at 200 and 230 cm-1, and the lines at 323, 400, and 447 cm-1 are broadening and about 4-8 cm-1 shift towards high, wavelength compared to the superconductors. As to the unobserved phonon absorption lines in the far infrafed region might be due to the thin powder samples and so the phonon absorption might be much weaker then that of excitons or superposition of phonon absorption on the exciton lines. Thus the superconducting mecha- nism in YxBa3-xCu2O7 systems might depend on the resonance coupling through the phonon and exciton transitions.

本文用类激子模型把多相Y_xBa_(3-x)Cu_2O_7系列高T_c超导体的远红外区大多数吸收峰分为三个线系,模型和实验结果符合很好(△<4cm~-1),显示出这些吸收峰有着非声子起源——类激子的能级跃迁,它提示我们Y_xBa_(3-x)Cu_2O_7高Tc的机制是由声子和激子能级跃迁的共振耦合决定的。实验得到的远红外谱表明超导样品和不超导样品几个吸收峰上有明显差别,这可以由它们的费密能级的位置不同来解释。最后给出了一些实验的结果预测。

 
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