Direct Imaging of the Distribution of Nd3+ Ions in Glasses Containing PbS Quantum Dots
SCIE
SCOPUS
- Title
- Direct Imaging of the Distribution of Nd3+ Ions in Glasses Containing PbS Quantum Dots
- Authors
- Park, WJ; Liu, C; Heo, J
- Date Issued
- 2015-07
- Publisher
- WILEY-BLACKWELL
- Abstract
- The influence of Nd3+ ions was investigated on the precipitation and optical properties of PbS quantum dots (QDs) inside silicate glasses. The diameters of the PbS QDs decreased as the concentration of Nd3+ in the glass increased as evidenced by blue shifts in the absorption and photoluminescence spectra. Electron energy loss spectroscopy shows that Nd3+ ions exist preferentially inside the PbS nanocrystals rather than in the glass matrix. We postulate that Nd-O clusters are preserved during heat treatment and serve as nucleation sites for PbS crystals. No change in the local bonding scheme of the Nd3+ ions was observed following heat treatment.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/36233
- DOI
- 10.1111/JACE.13582
- ISSN
- 0002-7820
- Article Type
- Article
- Citation
- JOURNAL OF THE AMERICAN CERAMIC SOCIETY, vol. 98, no. 7, page. 2074 - 2077, 2015-07
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