离中心的

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。

After Huang Qu senior official yellow Jinlong carries on the contact to finish, immediately defers to the planning for action which formulates in advance, leads side one group of terse motion members, nonstop is rapid rushes recent to the control center, nearly with the ellipse planetoid rugged surface, nearby the flatwise bend thorough giant steam hole, sees only this hole diameter to have about fully 200 meters, this time fierce toward the outside is erupting the pressure full steam; Huang Qu senior official yellow Jinlong earnestly examined without enough time that, then immediately lets the retinue survey group with the most advanced laser analyzer, surveyed has spouted the steam the temperature, the pressure as well as includes other material each data, obtained the data and formerly obtained the data astonishing consistency, in which vapor temperature reached as high as 500 degrees, about the pressure 50 atmospheric pressure, most worrying was in this steam includes some kind of humanity's unknown micro material, possible ambush some kind of unexpected danger, to be needing the further experimental analysis, could obtain the correlation the conclusion!

黄区长官黄金龙进行联络完毕后，就马上按照预先制定的行动计划，带领身边一批精悍的行动队员们，马不停蹄迅速赶到离指挥中心最近的，几乎与椭圆小行星崎岖不平的表面，平直弯曲深入的巨大蒸汽孔洞跟前，只见这个孔洞直径足有200米左右，此时正剧烈的往外喷发着压力十足的水蒸气；黄区长官黄金龙来不及认真查看，便马上让随行探测小组用最先进的激光分析仪，测量了一下喷出蒸汽的温度、压力以及含有其他物质的各项数据，得出的数据和先前得到的数据惊人的一致，其中蒸汽温度高达500度，压力50个大气压左右，最令人担心的是此蒸汽中含有某种人类未知的微量物质，可能潜伏着某种意想不到的危险，需要进一步的试验分析，才能得出相关的结论！

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。