摘要
对ＺｎＳ：Ｍｎ２＋纳米晶钠硼硅玻璃复合体进行了ＥＰＲ（ＥｌｅｃｔｒｏｎＰａｒａｍａｇｎｅｔｉｃＲｅｓｏｎａｎｃｅ）实验研究，确定Ｍｎ２＋在ＺｎＳ基质晶格中有３种形态：替位态（Ｍｎ２＋）ｓｕｂ，间隙态（Ｍｎ２＋）ｉｎｔ和Ｍｎ团簇。观测到ｇ因子随纳米晶粒径的减小而增大。对ｇ值进行了理论拟合，结果与实验符合很好。分析和讨论了这种量子限域下ＺｎＳ的ｓｐ３和Ｍｎ的３ｄ５电子态杂化所引起的ｇ－漂移。
From the electron paramagnetic resonance (EPR) experiments on ZnS:Mn 2+ nanoparticles and Pyrex glasses composites.we determined that there are three types of states of Mn 2+ in ZnS host lattice:substitution state (Mn 2+ ) sub ,interstitial state (Mn 2+ ) int and Mn clusters.We also observed that g factors increase with the decreasing of the radii of nanoparticles.The fitting of g values coincides well with the experiments.The g factor shift is due to the hybridization between sp 3 states of ZnS and 3 d 5 of Mn ions under carrier quantum confinement ( R<a B) were discussed and analyzed.
出处
《光电子．激光》
EI
CAS
CSCD
1999年第2期142-144,共3页
Journal of Optoelectronics·Laser
基金
国家自然科学基金
中国科学院激发态物理开放研究实验室资助
关键词
纳米晶
玻璃
复合体
EPR谱
G因子
漂移
电致发光
ZnS:Mn 2+ nanoparticles
pyrex glasses composites
EPR spectra
g factor shift
