Synthesis and Characterization of Metal Doped-InP Clusters and Nanostructures
- Title
- Synthesis and Characterization of Metal Doped-InP Clusters and Nanostructures
- Authors
- KIM, SUNGJEE; KWON, YONGJU; BANG, KYUHYUN
- Date Issued
- 2017-11-28
- Publisher
- MRS
- Abstract
- Understanding and controlling the nucleation stage before the continuous
growth is important for nanoparticle science. In semiconductor nanocrystal
quantum dot (QD) syntheses, 1-2 nm sized clusters are often formed before
the continuous growth of nanostructures. InP QDs attract great interest
because they do not have heavy metals and the band gap can be tuned to
visible range and thus can be well suited for display materials. We report
synthesis and applications of metal doped InP clusters. Various clusters
exhibit sharp excitonic absorption in UV-Vis region. Their mass was
elucidated using matrix-assisted laser desorption/ionization time-offlight(
MALDI-TOF) spectroscopy. Their chemical composition and dopant
quantity was determined by ICP-AES analysis. Various InP nanostructures that
included branched InP nanostructures were synthesized using the undoped
and metal doped InP clusters as a precursor. TEM investigations revealed
branch diameters of the lateral dimension of 2-4 nm and the length of 5-20
nm. X-ray diffraction(XRD) patterns of branched nanostructures match the
zinc blende structure of InP. Also the synthesis strategy by mixing two kinds
of clusters was tried to synthesize InP nanostructure and their emission
wavelength could be controlled by changing reaction temperature.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/42690
- Article Type
- Conference
- Citation
- 2017 MRS Fall Meeting & Exhibit, 2017-11-28
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