Nano

SKKU Advanced Institute of Nano Technology (성균관대학교 성균나노과학기술원)
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Fabrication of Water-Soluble CuInS2 Quantum Dots by Hot-injection Method and Phase Transfer Strategy

  • Deng, Chong (College of Physics Science and Engineering Hebei University) ;
  • Fu, Bowen (College of Physics Science and Engineering Hebei University) ;
  • Wang, Yanlai (Key Laboratory of Semiconductor Photovoltaic Technology of Inner Mongolia Autonomous Region School of Physical Science and Technology Inner Mongolia University) ;
  • Yang, Lin (College of Physics Science and Engineering Hebei University)
  • Received : 2018.07.01
  • Accepted : 2018.08.29
  • Published : 2018.10.31
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Abstract

Here we report an optimized hot-injection method and a phase transfer strategy for the synthesis of water-soluble $CuInS_2$ QDs with desired properties. The structure and morphology studies demonstrate that the resulting QDs are $CuInS_2$ tetragonal phase with well-defined facets. It is also found that the crystal size gradually increases with the increase of reaction temperature, while the surface of QDs with pre- and post-phase transfer is functionalized with hydrophobic and hydrophilic ligands, respectively. Spectroscopy measurements reveal the size-dependent optical properties of $CuInS_2$ QDs, demonstrating the quantum confinement effect in this system.

Keywords

Acknowledgement

Supported by : National Natural Science Foundation of China, Hebei University

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