PHOTOLUMINESCENCE OF NOBLE-METALS
PHOTOLUMINESCENCE OF NOBLE-METALS
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DOI：
10.1088/0031-8949/38/2/012
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发表时间：
1988-08-01
期刊：
影响因子：
2.9
通讯作者：
LUNDQVIST, S
中科院分区：
文献类型：
--
作者：
APELL, P;MONREAL, R;LUNDQVIST, S
我们开发了一个显式模型来解释贵金属中的辐射复合，该复合由光激发产生的spconduction band中的电子和d band中的空穴之间的跃迁引起。我们发现，观察到的光子分布有它的形状从两个竞争因素。第一个原因是由于光学和出射光子的最终态密度。这被随着可用d态的数量增加而增加的d带态密度因子抵消。我们给出了一个令人满意的帐户所观察到的光谱，使用常数矩阵元素，并发现，发光可以作为一种补充工具，以普通的弹性光散射，提供详细的信息占用和未占用状态，提供的弹性光学常数测量相同的样品。
We have developed an explicit model to explain the radiative recombination in noble metals, arising from transitions between electrons in the spconduction band and holes in the d-band generated by optical excitation. We find that the observed photon distribution has its shape from two competing factors. The first is due to the optics and the final density of states for the exiting photons. This is off-set by a d-band density of states factor increasing as the number of available d-states increase. We give a satisfactory account of the observed spectrum, using constant matrix elements, and find that luminescence can be used as a complementary tool to the ordinary elastic light scattering, giving detailed information about occupied and unoccupied states, provided the elastic optical constants are measured on the same sample.