期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
取代基影响邻菲罗啉衍生物-铕能量传递和荧光性能研究 被引量:1
1
作者 戴松元 姜玲 +1 位作者 张昌能 胡林华 《安徽师范大学学报(自然科学版)》 CAS 2018年第1期5-10,共6页
配体结构调控是提高稀土配合物发光强度的有效手段,根据稀土配合物发光原理,理想配体应具备较高的光捕获能力并且能有效地向稀土离子传递能量。研究表明,增加配体的共轭程度可使配体的光吸收能力增强,而不同电子给予特性基团的引入则会... 配体结构调控是提高稀土配合物发光强度的有效手段,根据稀土配合物发光原理,理想配体应具备较高的光捕获能力并且能有效地向稀土离子传递能量。研究表明,增加配体的共轭程度可使配体的光吸收能力增强,而不同电子给予特性基团的引入则会改变配体与稀土离子间的能级匹配程度,从而影响配体向稀土离子的有效能量传递,提高配合物的发光效率。本文以引入不同特性(共轭特性、电子给予特性)取代基的邻菲罗啉为配体合成6种铕的配合物,通过分析配合物的吸收光谱、红外光谱、荧光光谱和X射线光电子能谱等发现,供电子基团和共轭基团能够提高配体的电子云密度,增大配体的摩尔吸收系数,同时有利于配体与稀土离子间形成配位键,能够明显提高配合物分子内能量传递,并使配合物发光性能增强。 展开更多
关键词 稀土配合物 下转换 取代基 能量传递
下载PDF
The Electric Mechanism of Surface Pretreatments for Dye-Sensitized Solar Cells Based on Internal Equivalent Resistance Analysis
2
作者 XU Wei-Wei HU Lin-Hua +2 位作者 LUO Xiang-Dong LIU Pei-Sheng dai song-yuan 《Chinese Physics Letters》 SCIE CAS CSCD 2012年第1期279-282,共4页
Based on the optimization of dye-sensitized solar cell (DSC) photoelectrodes pretreated with different methods such as electrodeposition,spin-coating and TiCl_(4) pretreatment,theoretical calculations are carried out ... Based on the optimization of dye-sensitized solar cell (DSC) photoelectrodes pretreated with different methods such as electrodeposition,spin-coating and TiCl_(4) pretreatment,theoretical calculations are carried out to interpret the internal electric mechanism.The numerical values,including the series resistance R_(s) and the shunt resistance R_(sh) corresponding to the equivalent circuit model,are well evaluated and confirm that the DSC has good performance with a high R_(sh) and a low R_(s) due to good electrical contact and a low charge recombination after the different modifications.The Ⅰ-Ⅴ curves are fifted in the case without series resistance,and account for the role of R_(s) in the output characteristics.It is found that when R_(s) tends to the infinitesimal,the short-circuit current Isc,the open-circuit voltage V_(oc) and the fill factor can be improved by almost 0.8-1.4,2.9 and 2.1-6.8%,respectively. 展开更多
关键词 RESISTANCE COATING INTERNAL
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部