胶体法合成超薄二维半导体纳米晶体。
Colloidal synthesis of ultrathin two-dimensional semiconductor nanocrystals.
机构信息
National Creative Research Initiative Center for Oxide Nanocrystalline Materials, World Class University program of Chemical Convergence for Energy & Environment (C2E2), School of Chemical and Biological Engineering, Seoul National University, Seoul, Korea.
出版信息
Adv Mater. 2011 Jul 26;23(28):3214-9. doi: 10.1002/adma.201101334.
2D semiconductor quantum wells have been recognized as potential candidates for various quantum devices. In quantum wells, electrons and holes are spatially confined within a finite thickness and freely move in 2D space. Much effort has focused on shape control of colloidal semiconductor nanocrystals(NCs), and synthesis of 2D colloidal NCs has been achieved very recently. Here, recent advances in colloidal synthesis of uniform and ultrathin 2D CdSeNCs are highlighted. Structural and optical property characterization of these quantum-sized 2D CdSe NCs is discussed. Additionally, 2D CdSe NCs doped with Mn 2+ ions for dilute magnetic semiconductors (DMS) are presented.These 2D CdSe-based NCs can be used as model systems for studying quantum-well structures.
2D 半导体量子阱已被认为是各种量子器件的潜在候选者。在量子阱中，电子和空穴在有限的厚度内被空间限制，并在 2D 空间中自由移动。人们已经投入了大量的精力来控制胶体半导体纳米晶体（NCs）的形状，并且最近已经实现了 2D 胶体 NCs 的合成。在这里，重点介绍了胶体法合成均匀和超薄 2D CdSeNCs 的最新进展。讨论了这些量子尺寸 2D CdSe NCs 的结构和光学性质。此外，还介绍了掺杂 Mn2+离子的 2D CdSe 纳米晶作为稀磁半导体（DMS）。这些基于 2D CdSe 的 NCs 可用作研究量子阱结构的模型系统。
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