Abstract CdS-PVP nanocomposites grown with various concentrations of Cd + /S − and PVP are studied using Raman and atomic force microscopy mapping on same selected areas. The study shows that CdS nanocrystals are embedded in either a thin-film or spheres of PVP, formation of which depends on relative ratio of Cd + /S − concentration (density of nanocrystals) to PVP. Collapse of PVP from planer matrix to the sphere morphology is correlated with high density of CdS nanocrystals and the attractive interaction between CdS nanocrystals and PVP polymer leading to a co-operative growth mechanism. The understanding developed can be used to control the growth of CdS-PVP nanocomposites with desired properties for optoelectronic device applications.

中文翻译：

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CdS 纳米晶体和 PVP 之间的相互作用导致 CdS-PVP 纳米复合材料的协同生长：拉曼和 AFM 映射研究

摘要 使用拉曼和原子力显微镜对相同选定区域的映射研究了在不同浓度的 Cd + /S - 和 PVP 下生长的 CdS-PVP 纳米复合材料。研究表明，CdS 纳米晶体嵌入 PVP 的薄膜或球体中，其形成取决于 Cd + /S - 浓度（纳米晶体的密度）与 PVP 的相对比率。PVP 从平面基质塌陷到球体形态与 CdS 纳米晶体的高密度以及 CdS 纳米晶体和 PVP 聚合物之间的吸引力相互作用导致协同生长机制。所开发的理解可用于控制具有光电器件应用所需特性的 CdS-PVP 纳米复合材料的生长。