查询词典 luminescence

Each of the following seven chapters is devoted to a specific quality of natural light, including evanescence, atomization, and luminescence, and examines the particular uses of light through many disciplines-from art history to film and literature.

每个以下七个章节是专门为特定品质的自然光，包括evanescence ，雾化，并发光，并审查了特定用途的光线通过多学科，从美术史的电影和文学。

One of the keys is the energy width split out between ground state and excited state of luminescence center.

荧光中心能级的间距是其中的一个关键指标。

These all make the luminescence efficiency increase and the lifetime of the excited state of Tb〓 become longer.

这些都使配合物发光效率增大，并使Tb〓激发态的寿命增长，即弛豫时间增长，因而光声位相增大。

Luminescence glost material of storage light is used extensively in recent years.

前言蓄光型发光材料是近年来应用比较广泛的一种发光材料[1~4]。

In this dissertation, we optimized the thinkness of each layer of TFEL devices using the layered optimization method to obtain ZnS: Ce〓 TFEL devices. Accoding to the energy level structure of Ce〓, two criteria for distinguishing the EL of Ce〓 were found out, from which it was conduded that the TFEL of ZnS: Ce〓 comes from 5d→4f transition of Ce〓. The measurement of brightness waveform showed that the TFEL of ZnS: Ce〓 was the luminescence from independent centers. and there were the field induced-delocalization in this process anf it〓s the cause of low TFEL efficiency of ZnS: Ce〓. In this dissertation, different influence factors on TFEL of ZnS: Ce〓 were sdudied. The influence of different host lattice is different: The blue/green ratio of ZnS: Ce〓 in hexagonal system of ZnS is larger than that in cubic system of ZnS, and the TFEL peaks in hexagonal system of ZnS moves toward longer wavelength compared with that in cubic system of ZnS. The adding buffer layer was used in this stage. The solubility of Ce〓 in ZnS was small and it was another limit to TFEL brightness of ZnS: Ce〓 device. The solubility of Ce〓 increased ten times when using Li ions as flux, so that the TFEL brightness of ZnS: Ce〓 was enhanced. It was found that the appearing of ZnO in active layer improves the TFEL of ZnS: Ce〓: the brightness and the wave range of ZnS: Ce〓TFEL were enhanced.

本文采用TFEL的分层优化方案，优化组合了各膜层厚度，选择最佳制备条件，得到了ZnS：Ce〓的TFEL；根据Ce〓的能级结构，找到了判别Ce〓的EL的两个简单依据，并据此断定ZnS：Ce〓的TFEL的两个发射峰分别属于Ce〓的〓和〓跃迁；亮度波形测量表明ZnS：Ce〓的TFEL属于分立中心发光，分析认为在此过程中存在着较严重的场致离化，这也是ZnS：Ce〓的TFEL效率较低的一个原因；本文考查了影响ZnS：Ce〓的TFEL的各种因素，发现：基质的晶体结构对ZnS：Ce〓的TFEL有所影响，在六角相ZnS中Ce〓的TFEL优于立方相ZnS中Ce〓的TFEL：发射峰的蓝-绿比相对较大，且光谱向短波方向移动，在此项研究中本文采用了在发光层前增镀过渡层的办法，过渡层为六角晶相的ZnO；限制ZnS：Ce〓的TFEL器件亮度的一个原因是Ce〓在ZnS中的溶解度低，本文用Li离子作助溶剂增大了Ce〓的溶解度，增大幅度为一个量级，并且ZnS：Ce〓的TFEL亮度明显提高；从ZnS：Ce〓的TFEL光谱来看ZnS：Ce〓的TFEL波长覆盖范围较小，亮度也不高，达不到做为白色TFEL材料的要求，需要寻找新的白色TFEL材料；在研究ZnS：Ce〓的TFEL中还发现：发光层中ZnO的出现有利于ZnS：Ce〓的TFEL：发射峰变宽、亮度增大。

Moreover, there is no luminescence recovery in the future 20 hours of the first irradiation after hydrogenation.

另外，实验中发现经过氢化处理的GaN在辐照后20小时内没有观察到带边发射强度的恢复。

The testing method for image intensifier fluorescence screen brightness, uniformity and luminescence efficiency and afterglow is put up.

在分析研究荧光屏发光机理和特性的基础上，给出表征微光像增强器荧光屏性能的主要参数为荧光屏发光亮度、发光的均匀性、发光效率和余辉。

The influence of coordination environment on the luminescence property and intramolecular energy transfer of complexes were discussed.

讨论了配位环境对荧光性质的影响以及配合物分子内能量传递问题。

According to the variations of the luminescence efficiency and the phase shifts, the intramolecular energy transfer and relaxation processes of different complexes are discussed.

根据发光效率的变化和光声位相偏移，对它们的分子内能量传递和弛豫过程进行了研究。

To clarify the effect of defects in luminescence, the PL spectra were measured at 10K for the implanted samples after isochronal annealing from 300℃ to 1200℃.

系统研究了高纯N〓气氛和氧化性气氛中高温退火后样品PL谱的演变，观察到在N〓下等温退火后PL谱的轻微蓝移，变温退火后PL谱的明显红移，以及在氧化性气氛下，等温和等时退火后发光峰的往复位移。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。