摘要
用融熔法制备了分散有ＺｎＳＭｎ２＋纳米晶的钠硼硅（Ｎａ２Ｏ－Ｂ２Ｏ２－ＳｉＯ２）玻璃．对样品在不同温度和时间下进行退火处理，获得不同尺寸的纳米晶．通过激发和发射光谱测量发现样品中的Ｍｎ２＋有两种组态，即替位组态（Ｍｎ２＋）替位和间隙组态（Ｍｎ２＋）间隙．用有效质量模型计算了纳米晶的粒径．结果表明在一些样品中存在着载流子限域即Ｒ＜Ｒａ．
The pyrex glasses with ZnS∶Mn2+ nanocrystals were prepared by melt method. It was found that there are two configurations of Mn2+ in the samples, or(Mn2+)substitutionand (Mn2+)interstitial configurations, by measuring excitation and emission spectra of samples. The diameters of nanocrystals were calculated using the effective mass model. It was suggested that there are the carrier confinements in some samples, or R<RB.
出处
《发光学报》
EI
CAS
CSCD
北大核心
1997年第4期323-325,共3页
Chinese Journal of Luminescence
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
纳米微晶
载流子限域
硫化锌
锰掺杂
微晶玻璃
nanocrystal, substitution and interstitial impurities, carrier confinement
