Colloidal PbS Nanocrystals with Size‐Tunable Near‐Infrared Emission: Observation of Post‐Synthesis Self‐Narrowing of the Particle Size Distribution
Top Cited Papers
- 4 November 2003
- journal article
- research article
- Published by Wiley in Advanced Materials
- Vol. 15 (21) , 1844-1849
- https://doi.org/10.1002/adma.200305395
Abstract
The synthesis of nanocrystalline PbS quantum dots using organometallic precursors is reported. The samples exhibit tunable, strong near‐infrared photoluminescence. A remarkable spontaneous self‐directed narrowing of the particle size distribution is shown to occur after the particles are synthesized and dispersed in organic solvent. The Figure shows the tuning of band‐edge exciton absorption features through the near‐infrared spectral region according to particle size.Keywords
This publication has 36 references indexed in Scilit:
- Formation of High-Quality CdS and Other II-VI Semiconductor Nanocrystals in Noncoordinating Solvents: Tunable Reactivity of MonomersAngewandte Chemie International Edition in English, 2002
- Efficient Near-Infrared Polymer Nanocrystal Light-Emitting DiodesScience, 2002
- Observation of Large Changes in the Band Gap Absorption Energy of Small CdSe Nanoparticles Induced by the Adsorption of a Strong Hole AcceptorNano Letters, 2001
- Programmed Assembly of DNA Functionalized Quantum DotsJournal of the American Chemical Society, 1999
- Colloidally Prepared HgTe Nanocrystals with Strong Room-Temperature Infrared LuminescenceAdvanced Materials, 1999
- Kinetics of II-VI and III-V Colloidal Semiconductor Nanocrystal Growth: “Focusing” of Size DistributionsJournal of the American Chemical Society, 1998
- (CdSe)ZnS Core−Shell Quantum Dots: Synthesis and Characterization of a Size Series of Highly Luminescent NanocrystallitesThe Journal of Physical Chemistry B, 1997
- Light-emitting diodes made from cadmium selenide nanocrystals and a semiconducting polymerNature, 1994
- Transient bleaching of small lead sulfide colloids: influence of surface propertiesThe Journal of Physical Chemistry, 1990
- A New Preparation Method of Ultrafine Particles of Metallic SulfidesJapanese Journal of Applied Physics, 1987