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Applied Physics Letters / Volume 80 / Issue 1 / STRUCTURAL, MECHANICAL, THERMODYNAMIC, AND OPTICAL PROPERTIES OF CONDENSED MATTER

Appl. Phys. Lett. 80, 49 (2002); http://dx.doi.org/10.1063/1.1431698 (3 pages)

Photonic crystals of core-shell colloidal particles

Krassimir P. Velikov, Alexander Moroz, and Alfons van Blaaderen

Physics and Chemistry of Condensed Matter, Debye Institute, Utrecht University, Princetonlaan 5, 3584 CC Utrecht, The Netherlands

(Received 25 June 2001; accepted 29 October 2001)

We report on the fabrication and optical transmission studies of thin three-dimensional photonic crystals of high-dielectric ZnS-core and low-dielectric SiO2-shell colloidal particles. These samples were fabricated using a vertical controlled drying method. The spectral position and width of a stopgap depend on the core-to-shell ratio, in a manner consistent with numerical calculations. Both experiments and calculations show that the relative L-stopgap width in the case of high-index core low-index shell particles can be larger in comparison to the case of homogeneous particles of either material. The core-shell morphology gives additional control over the photonic stopgap characteristics. © 2002 American Institute of Physics.

© 2002 American Institute of Physics

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KEYWORDS and PACS

Keywords

zinc compounds, II-VI semiconductors, silicon compounds, photonic band gap, colloids, light transmission, spectral line breadth

PACS

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.1431698

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

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