掺杂Mn^(2+)的ZnSe纳米晶的合成研究

Study on Synthesis of Mn^(2+) Doped ZnSe Nanoparticles

采用气液接触法合成ZnMnSe纳米晶,室温下Mn2+在ZnSe中的掺杂极为缓慢,考察了锰离子的掺杂过程。总结了醋醋酸锌浓度变化及前驱体Mn2+浓度变化条件下,掺杂离子荧光强度随掺杂时间的变化规律,提出Mn2+的掺杂过程分为ZnSe基质合成、掺杂离子化学吸附和扩散掺杂3个阶段。采用X-射线衍射仪、荧光光谱仪等仪器进行了表征。

zince acetate as well as Mn2＋/Zn2＋ ratio was investigated of Mn2＋ was monitored with respect to the doping time. for their impact on the doping process. The fluorescence intensity The following pattern of the doping process was proposed that ZnSe was first synthesized as substrate followed by chemical adsorption of Mn2＋ on the surface. Furthermore, the ZnSe nanocrystal lattice through diffusion. Equipment analysis as X -ray powder diffraction （XRD） spectra were employed to characterize the samDles. Mn2＋ doped into and fluorescence