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广州大学 物理电子工程学院
收稿:2008-11-10,
修回:1900-1-2,
网络首发:2009-08-30,
纸质出版:2009-08-30
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孙海超, 张玉芹, 刘翠红. 球型量子点中的电子拉曼散射[J]. 发光学报, 2009,30(4):447-452.
SUN Hai-chao, ZHANG Yu-qin, LIU Cui-hong. Electron Raman Scattering in Spherical Quantum Dots[J]. Chinese Journal of Luminescence, 2009, 30(4): 447-452.
研究了球型半导体量子点中的电子拉曼散射.讨论了初态为导带全满
价带全空时的电子跃迁过程
给出了电子拉曼散射的跃迁选择定则。通过计算GaAs和CdS材料球型量子点中电子及空穴参与拉曼散射的微分散射截面
分别比较了电子和空穴的不同影响
发现电子对拉曼散射的贡献要远大于空穴的贡献;当选取不同量子点半径时
拉曼散射微分散射截面变化也非常明显;量子点尺寸不变的条件下
改变入射光子能量
可以发现
微分散射截面随入射光子能量增大而减小。
paper
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