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Copyright 2004 by Marcel Dekker, Inc. All Rights Reserved.

Copyright 2004 by Marcel Dekker, Inc. All Rights Reserved.

Copyright 2004 by Marcel Dekker, Inc. All Rights Reserved.

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B. Close-Packed CdSe FilmsLike monolayer-protected metal clusters, semiconductor quantum dots encapsulated<strong>by</strong> a monolayer of passivating surfactant can be processed fromsolution into a variety of ‘‘quantum-dot solids’’ consisting of close-packedsemiconductor nanocrystals separated <strong>by</strong> the surfactant layers (Fig. 14).Figure 14 Cross-sectional TEM images of spin-coated CdSe (a) and CdSe/ZnScore–shell nanocrystal films (b). (c) Plan view of a thin film of CdSe nanocrystals caston a mica plate. The images demonstrate both the close-packed structure and interparticleseparation due to the surfactant monolayers. (From Ref. 18.)<strong>Copyright</strong> <strong>2004</strong> <strong>by</strong> <strong>Marcel</strong> <strong>Dekker</strong>, <strong>Inc</strong>. <strong>All</strong> <strong>Rights</strong> <strong>Reserved</strong>.

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