Absorption, photoluminescence, and Raman scattering studies of CdS$-x$/Se$-1$MIN@x$/ nanocrystals, as a function of the crystallite mean radius, are reported. By properly considering the competing effects of spatial localization and strain, the chemical composition and the lattice contraction are assessed. Two different techniques have been used to analyze the electron-phonon coupling. Photoluminescence and absorption studies allow us to measure the Huang-Rhys parameter. The size dependence of the Frohlich electron-LO phonon interaction has been extracted, for the first time, from the polarization analysis of the Raman scattering. Our results unambiguously show that, in the investigated nanocrystal size range, the electron-phonon coupling monotonically increases at decreasing the nanocrystal radius. The observed behavior is in agreement with the latest calculations.
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机译：报告了CDS $ -X $ / SE $ -1 $ MIN @ $ /纳米晶体的吸收，光致发光和拉曼散射研究，作为晶体平均半径的函数。通过适当考虑空间定位和菌株的竞争效果，评估化学成分和晶格收缩。已经采用了两种不同的技术来分析电子 - 声子耦合。光致发光和吸收研究允许我们测量黄rhys参数。首次从拉曼散射的偏振分析中提取Frohlich电子-Lophon相互作用的尺寸依赖性。我们的结果明确表明，在调查的纳米晶体尺寸范围内，电子 - 声子偶联在减小纳米晶体半径时单调增加。观察到的行为与最新计算一致。
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