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Bright White‐Light Emission from Semiconductor Nanocrystals: by Chance and by Design
Author(s) -
Sapra S.,
Mayilo S.,
Klar T. A.,
Rogach A. L.,
Feldmann J.
Publication year - 2007
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200602267
Subject(s) - materials science , white light , nanocrystal , semiconductor , shell (structure) , optoelectronics , core (optical fiber) , visible spectrum , nanotechnology , light emission , optics , physics , composite material
The synthesis and characterization of two bright white‐light‐emitting semiconductor nanocrystal (NC)‐based systems is reported. CdS NCs emit white light because of the presence of surface states over the entire range of the visible spectrum, whereas CdSe/ZnS/CdSe/ZnS core/shell/shell/shell NCs are designed to emit white light as a result of the combination of blue and orange emissions from the shell and the core, respectively (see figure).

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