Financial support of this work by the University of Arkansas and the NSF is acknowledged. J.J.L. is grateful for the graduate fellowship provided by CSTAR, and Y.W. is supported by NSF SBIR programs (Nos. 0215254 and 0232976).
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Communication
Colloidal Two-Dimensional Systems: CdSe Quantum Shells and Wells†
Article first published online: 22 OCT 2003
DOI: 10.1002/anie.200352120
Copyright © 2003 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Additional Information
How to Cite
Battaglia, D., Li, J. J., Wang, Y. and Peng, X. (2003), Colloidal Two-Dimensional Systems: CdSe Quantum Shells and Wells. Angewandte Chemie International Edition, 42: 5035–5039. doi: 10.1002/anie.200352120
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Publication History
- Issue published online: 22 OCT 2003
- Article first published online: 22 OCT 2003
- Manuscript Revised: 12 AUG 2003
- Manuscript Received: 11 JUN 2003
Keywords:
- cadmium;
- colloids;
- nanostructures;
- selenium;
- semiconductors
Graphical Abstract
Thin CdSe layers (“quantum shells”) were epitaxially grown onto CdS nanocrystal templates. Their optical properties are dominated by the shell thickness despite the different bandgap and size of the templates. The emission of the CdSe quantum shells, which can be tuned by varying the shell thickness, ranges from 520 to 650 nm (see Figure), and the emission quantum yield can be increased to over 40 % by coating the quantum shells with epitaxially grown CdS thin layers (CdSe colloidal “quantum wells”).