Advanced Materials

Colloidal Synthesis of Ultrathin Two-Dimensional Semiconductor Nanocrystals

Authors

  • Jae Sung Son,

    1. National Creative Research Initiative Center for Oxide Nanocrystalline Materials, World Class University (WCU) program of Chemical Convergence for Energy & Environment (C2E2), School of Chemical and Biological Engineering, Seoul National University, Seoul 151-744, Korea
    Search for more papers by this author
  • Jung Ho Yu,

    1. National Creative Research Initiative Center for Oxide Nanocrystalline Materials, World Class University (WCU) program of Chemical Convergence for Energy & Environment (C2E2), School of Chemical and Biological Engineering, Seoul National University, Seoul 151-744, Korea
    Search for more papers by this author
  • Soon Gu Kwon,

    1. National Creative Research Initiative Center for Oxide Nanocrystalline Materials, World Class University (WCU) program of Chemical Convergence for Energy & Environment (C2E2), School of Chemical and Biological Engineering, Seoul National University, Seoul 151-744, Korea
    Search for more papers by this author
  • Jihwa Lee,

    1. School of Chemical and Biological Engineering, Seoul National University, Seoul 151-744, Korea
    Search for more papers by this author
  • Jin Joo,

    Corresponding author
    1. Department of Applied Chemistry, Kyungpook National University, Daegu 702-701, Korea
    • Department of Applied Chemistry, Kyungpook National University, Daegu 702-701, Korea.
    Search for more papers by this author
  • Taeghwan Hyeon

    Corresponding author
    1. National Creative Research Initiative Center for Oxide Nanocrystalline Materials, World Class University (WCU) program of Chemical Convergence for Energy & Environment (C2E2), School of Chemical and Biological Engineering, Seoul National University, Seoul 151-744, Korea
    • National Creative Research Initiative Center for Oxide Nanocrystalline Materials, World Class University (WCU) program of Chemical Convergence for Energy & Environment (C2E2), School of Chemical and Biological Engineering, Seoul National University, Seoul 151-744, Korea
    Search for more papers by this author

Abstract

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 CdSe NCs are highlighted. Structural and optical property characterization of these quantum-sized 2D CdSe NCs is discussed. Additionally, 2D CdSe NCs doped with Mn2+ ions for dilute magnetic semiconductors (DMS) are presented. These 2D CdSe-based NCs can be used as model systems for studying quantum-well structures.

Ancillary