Nanoplatelets (NPLs) are a remarkable class of quantum confined materials with size‐dependent optical properties, which are determined by the defined thickness of the crystalline platelets. To increase the variety of species, the colloidal atomic layer deposition method is used for the preparation of increasingly thicker CdSe NPLs. By growing further crystalline layers onto the surfaces of 4 and 5 monolayers (MLs) thick NPLs, species from 6 to 13 MLs are achieved. While increasing the thickness, the heavy‐hole absorption peak shifts from 513 to 652 nm, leading to a variety of NPLs for applications and further investigations. The thickness and number of MLs of the platelet species are determined by high‐resolution transmission electron microscopy (HRTEM) measurements, allowing the interpretation of several contradictions present in the NPL literature. In recent years, different assumptions are published, leading to a lack of clarity in the fundamentals of this field. Regarding the ongoing scientific interest in NPLs, there is a certain need for clarification, which is provided in this study.

中文翻译：

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通过胶体原子层沉积增加半导体纳米片的多样性和了解

纳米血小板（NPL）是一类杰出的量子受限材料，具有与尺寸有关的光学特性，这些特性取决于晶体血小板的定义厚度。为了增加种类的多样性，胶体原子层沉积法用于制备越来越厚的CdSe NPL。通过在4和5个单层（MLs）厚NPL的表面上生长更多的晶体层，可以获得6到13 ML的物质。在增加厚度的同时，重空穴吸收峰从513 nm转变为652 nm，从而导致了各种用于应用和进一步研究的不良贷款。血小板种类的ML的厚度和数量由高分辨率透射电子显微镜（HRTEM）测量确定，可以解释不良贷款文献中存在的一些矛盾。近年来，发表了不同的假设，导致该领域的基础知识不够清晰。关于对不良贷款的持续科学兴趣，本研究提供了一定的澄清需求。