CdS/HgS/CdS球状纳米系统高能级斯塔克线度效应  

High-energy level linear Stark effect in CdS/HgS/CdS spherical nanometric system

作　　者：郑瑞伦[1] 吴强[1] 

机构地区：[1]重庆文理学院物理与信息工程系,重庆402160

出　　处：《物理学报》2008年第12期7841-7847,共7页Acta Physica Sinica

摘　　要：研究了在层间作用和电场作用下球状纳米系统的电子能量和波函数.以CdS/HgS/CdS球状纳米系统为例,讨论了层间作用、电场和样品线度对高能级斯塔克效应以及谱线频率和强度的影响.结果表明:CdS/HgS/CdS球状纳米系统在外电场作用下发生斯塔克效应的能级分裂规律与氢原子类似,但能级位移量不同.谱线频移与电场强度的平方成正比,多数谱线的频移随线度增大而减小,少数谱线的频移则相反;而层间作用引起谱线的频移随线度增大而减小.除少数谱线外,多数谱线的相对强度随线度增大而减小,层间作用不会改变相对强度随线度的变化趋势,但要改变谱线的强度值,线度较小时层间作用对谱线强度的影响才显著.The influence of electric field and interlamellar effect on the electronic energy and wave function of spherical nanometric system is studied. Taking CdS/HgS/CdS as example, the influence of interlamellar effect, electric field and sample linear size on high-energy level Stark effect, spectral line frequency and intensity are discussed. The results show that for the spherical nanosystem CdS/HgS/CdS, the external electric field, Stark effect and the law of level effect-split-level resemble that of the hydrogen atom, but with different displacement of energy levels. The displacement of spectral lines is always proportional to the square of intensity in the electric field, and most spectral lines＇ frequency excursion decreased with the increase of linear samplesize, while some of the frequency excursions are on the opposite. The spectral line frequency excursion caused by interlamellar effect will decrease with the increase of linear size. Except a few spectral lines, most spectral lines will weaken with the increase of the linear size. Interlamellar effect will not change the trend of the relative intensity changing with linear size, but will make the intensities of spectral lines change. When the linear size is small, the influence of interlamellar effect on the intensity of spectral line is obvious.

关 键 词：CdS/HgS/CdS球状纳米系统 斯塔克效应 谱线频率 谱线强度 

分 类 号：TB383.1[一般工业技术—材料科学与工程]