Self-Organization of CdSe Nanocrystallites into Three-Dimensional Quantum Dot Superlattices

The self-organization of CdSe nanocrystallites into three-dimensional semiconductor quantum dot superlattices (colloidal crystals) is demonstrated. The size and spacing of the dots within the superlattice are controlled with near atomic precision. This control is a result of synthetic advances that...

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Bibliographic Details
Published in:Science (American Association for the Advancement of Science) 1995-11, Vol.270 (5240), p.1335-1338
Main Authors: Murray, C. B., Kagan, C. R., Bawendi, M. G.
Format: Article
Language:English
Subjects:
Chemistry
Clusters, nanoparticles, and nanocrystalline materials
Colloids
Condensed matter: structure, mechanical and thermal properties
Crystal lattices
Crystallites
Crystals
Evidence
Exact sciences and technology
Face centered cubic lattices
Low-dimensional structures (superlattices, quantum well structures, multilayers): structure, and nonelectronic properties
Materials
Materials science
Nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals
Oxides
Physics
Quantum dots
Semiconductors
Structure of solids and liquids
crystallography
Superlattices
Superlattices as materials
Surfaces and interfaces
thin films and whiskers (structure and nonelectronic properties)
Thin films
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Summary:The self-organization of CdSe nanocrystallites into three-dimensional semiconductor quantum dot superlattices (colloidal crystals) is demonstrated. The size and spacing of the dots within the superlattice are controlled with near atomic precision. This control is a result of synthetic advances that provide CdSe nanocrystallites that are monodisperse within the limit of atomic roughness. The methodology is not limited to semiconductor quantum dots but provides general procedures for the preparation and characterization of ordered structures of nanocrystallites from a variety of materials.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.270.5240.1335