nonradiative transition meaning in Chinese
无辐射跃迁
Examples
- The activation effect of zn2 + modification , including enhancement of emission intensity , slowing of luminescence decay and increasing of quantum yields , results from the formation of zns shell outside the nanoparticles , which is passivating the surface of nanoparticles , eliminating the surface quenching centers , so as to block the nonradiative transition pathways through these kind of quenching centers
Zn ~ ( 2 + )表面修饰在纳米颗粒表面形成了zns壳层，钝化了纳米颗粒的表面，消除了表面猝灭中心，阻塞了通过表面猝灭中心进行无辐射跃迁的通道，从而使得发光强度增加，衰减变慢，量子效率提高。 - The increase of radiative transition rate with decreasing particle size was attributed to the lower symmetry surrounding the eu3 + ions , while the increase of nonradiative transition rate to the extra nonradiative transition channels caused by surface defects . ( 3 ) under excitation of 488 nm , temperature - dependence of emission intensity of the 5d4 - 7fj transition in nanocrystalline y2o3 : tb was studied . in nanocrystalline , there appeared two maximal intensities
( 3 )研究了488nm激光激发下不同颗粒尺寸的y _ 2o _ 3 ： tb纳米晶荧光发射强度随温度的变化规律，发现y _ 2o _ 3 ： tb纳米晶荧光发射强度在280k与590k存在两个极大值，而体材料只在280k有一个极大值。 - The results indicate that in niobate glasses , as the concentration of nb2o5 increases , the covalence becomes strong , the symmetry becomes low and the electron - phonon coupling becomes strong , thus the lifetimes become short , the nonradiative transition processes and the temperature - quenching become strong and the value of crystal field parameter b20 becomes small
( 6 )研究了妮硅与妮磷系列玻璃发光特性与组份的关系，发现随着nbzos浓度的增加， eu一o键共价性增强，局域环境对称性降低，电一声子祸合增强从而导致sd 。