Babaev Anton A, Skurlov Ivan D, Timkina Yulia A, Fedorov Anatoly V
PhysNano Department, ITMO University, Saint Petersburg 197101, Russia.
Nanomaterials (Basel). 2023 Jun 3;13(11):1797. doi: 10.3390/nano13111797.
Lead chalcogenide nanocrystals (NCs) are an emerging class of photoactive materials that have become a versatile tool for fabricating new generation photonics devices operating in the near-IR spectral range. NCs are presented in a wide variety of forms and sizes, each of which has its own unique features. Here, we discuss colloidal lead chalcogenide NCs in which one dimension is much smaller than the others, i.e., two-dimensional (2D) NCs. The purpose of this review is to present a complete picture of today's progress on such materials. The topic is quite complicated, as a variety of synthetic approaches result in NCs with different thicknesses and lateral sizes, which dramatically change the NCs photophysical properties. The recent advances highlighted in this review demonstrate lead chalcogenide 2D NCs as promising materials for breakthrough developments. We summarized and organized the known data, including theoretical works, to highlight the most important 2D NC features and give the basis for their interpretation.
硫属铅化物纳米晶体（NCs）是一类新兴的光活性材料，已成为制造在近红外光谱范围内工作的新一代光子学器件的通用工具。纳米晶体呈现出各种各样的形式和尺寸，每种都有其独特的特征。在这里，我们讨论一维比其他维度小得多的胶体硫属铅化物纳米晶体，即二维（2D）纳米晶体。本综述的目的是全面介绍当今此类材料的进展情况。由于各种合成方法会产生具有不同厚度和横向尺寸的纳米晶体，这会极大地改变纳米晶体的光物理性质，因此该主题相当复杂。本综述中强调的最新进展表明，二维硫属铅化物纳米晶体是有望实现突破性发展的材料。我们总结并整理了已知数据，包括理论研究成果，以突出二维纳米晶体的最重要特征，并为其解释提供依据。
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