CuInS2/ZnS core/shell quantum dots by cation exchange and their blue-shifted photoluminescence
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- 31 January 2011
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of Materials Chemistry
- Vol. 21 (11) , 3745-3750
- https://doi.org/10.1039/c0jm03194a
Abstract
Highly luminescent CuInS2/ZnS (CIS/ZnS) core/shell quantum dots with a quantum yield of 65% were synthesized by a cation exchange reaction. Similar sized CIS cores and CIS/ZnS core/shells, which were confirmed by TEM, showed that cation exchange occurred inside the core, which reduced the core size and increased the blue-shift in their emission. ICP revealed the CIS cores to have a gradient composition that is richer in indium close to the surface of the core, which explains the broad emission spectrum. This cation exchange reaction could be applied to AgInS2 (AIS) QDs, which showed a blue shift of 70 nm in the emission spectrum. The PXRD pattern also showed a peak shift as evidence of a core/shell structure.Keywords
This publication has 41 references indexed in Scilit:
- White‐Light‐Emitting Diodes with Quantum Dot Color Converters for Display BacklightsAdvanced Materials, 2010
- Colloidal PbS Quantum Dot Solar Cells with High Fill FactorACS Nano, 2010
- High-Efficiency Hybrid Polymer Solar Cells with Inorganic P- and N-Type Semiconductor Nanocrystals to Collect Photogenerated ChargesThe Journal of Physical Chemistry C, 2010
- Solution-Processed Inorganic Solar Cell Based on in Situ Synthesis and Film Deposition of CuInS2 NanocrystalsJournal of the American Chemical Society, 2009
- Solar Cells Based on Junctions between Colloidal PbSe Nanocrystals and Thin ZnO FilmsACS Nano, 2009
- Synthesis of Cu2ZnSnS4 Nanocrystal Ink and Its Use for Solar CellsJournal of the American Chemical Society, 2009
- Multifunctional Magneto‐Polymeric Nanohybrids for Targeted Detection and Synergistic Therapeutic Effects on Breast CancerAngewandte Chemie International Edition in English, 2007
- Quantum dot bioconjugates for imaging, labelling and sensingNature Materials, 2005
- Semiconductor Nanocrystals as Fluorescent Biological LabelsScience, 1998
- Quantum Dot Bioconjugates for Ultrasensitive Nonisotopic DetectionScience, 1998