Gupta Sanjeev K, Jha Prafulla K, Sahoo Satyaprakash, Arora A K, Azhniuk Y M
Department of Physics, Bhavnagar University, Bhavnagar 364022, India.
J Nanosci Nanotechnol. 2009 Sep;9(9):5541-4. doi: 10.1166/jnn.2009.1168.
We calculate low-frequency Raman scattering from the confined acoustic phonon modes of CdS(1-x)Se(x) nanoparticles embedded in borosilicate glass. The calculation of the Raman scattering by acoustic phonons in nanoparticles has been performed by using third-order perturbation theory. The deformation potential approximation is used to describe the electron-phonon interaction. The Raman-Brillouin electronic density and the electron-phonon interaction are found to increases with decreasing size of nanoparticle. A good agreement between the calculated and reported low-frequency Raman spectra is found.
我们计算了嵌入硼硅酸盐玻璃中的CdS(1-x)Se(x)纳米颗粒受限声子模式的低频拉曼散射。利用三阶微扰理论对纳米颗粒中声子的拉曼散射进行了计算。采用形变势近似来描述电子-声子相互作用。发现拉曼-布里渊电子密度和电子-声子相互作用随纳米颗粒尺寸的减小而增加。计算得到的低频拉曼光谱与报道的光谱吻合良好。
