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High-level Stark Effect and Spectrum of Spherical Nanometer System
Qiang Wu*,Xiao-xia Long,Rui-lun Zheng
Author NameAffiliationE-mail
Qiang Wu* School of Electronics and Electrical Engineering, Chongqing University of Arts and Sciences, Chongqing 402160, China wuqiang2072@163.com 
Xiao-xia Long School of Electronics and Electrical Engineering, Chongqing University of Arts and Sciences, Chongqing 402160, China  
Rui-lun Zheng School of Physical Science and Technology, Southwest University, Chongqing 400715, China  
Abstract:
In the electric field and layer-to-layer interaction energy, the law of split-level of high-level Stark effect of spherical nanometer system is explored as well as the frequency of spectrum,intensity and size effect of coefficient of spontaneous radiation. Taking three layers CdS/HgS spherical nanometer system as an example, the influence of the electric field and layer-to-layer interaction energy is explored on Stark effect and spectrum. The results show that in the Stark effect system, the energy level is split based on 1, 3,… , (2n—1), when it is in the electric field only, similar to the hydrogen atoms; and in the electric field and layer-to-layer interaction, it is split based on 1, 4, … , n2; with the quantum transition, the frequency of the spectrum decreases with the increasing size of the system; apart from a few spectral lines, the intensity of most spectral lines will decreased as the size increases; while the coefficient of spontaneous radiation will increase with the increasing size; the electric field will cause the changes of spectrum frequency; its spectrum frequency shift is proportional to the square of the electric field intensity; apart from a few spectral lines, the frequency shift of spectral lines that is caused by the electric field and layer-to-layer interaction will decrease as the size increases; the interaction will make the level of electronic energy level lower slightly (the order of magnitude is between 10-7—10-9 eV), the slightly increased spectrum intensity and the slightly increased value of coefficient of spontaneous radiation, but it will not influence the frequency of spectrum, intensity, and the trend that coefficient of spontaneous radiation changes with the size; when the size is smaller, the layer-to-layer interaction effect will be significant.
Key words:  Layer-to-layer interaction energy, CdS/HgS/CdS spherical nanometer system, Stark effect, Frequency shift of spectral line, Coefficient of spontaneous radiation
FundProject:
球状纳米系统高能级斯塔克效应和谱
吴强*,龙晓霞,郑瑞伦
摘要:
以三层CdS/HgS/CdS球状纳米系统为例,研究了在电场和层间作用下球状纳米系统高能级斯塔克效应的能级分裂规律以及谱线的频率、强度和自发幅射系数的线度效应. 结果表明,系统的斯塔克效应在只有电场时,能级是按1,3,…,(2n—1)的规律进行分裂,与氢原子类似;有电场和层间同时作用时,能级是按1,4,…,n2的规律进行分裂. 量子跃迁时各谱线的频率均随系统线度增大而减小,除少数谱线外,多数谱线的强度随线度增大而减小,而自发幅射系数随线度增大而增大;电场会引起谱线的频率发生改变,其谱线频移量与电场强度的平方成正比;除少数谱线外,电场和层间作用引起的谱线频移量均随线度增大而减小;层间作用会使电子的能级稍有降低,稍微增大谱线的强度和自发幅射系数值,但它不会影响谱线的频率、强度和自发幅射系数随线度的变化趋势,在线度较小时层间作用的影响才显著.
关键词:  层间作用,三层球状纳米系统,斯塔克效应,谱线频移,自发幅射系数
DOI:10.1088/1674-0068/23/05/608-614
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