Self-assembled 3D photonic crystals from ZnO colloidal spheres

Eric W. Seelig; Betty Tang; Alexey Yamilov; Hui Cao; R. P.H. Chang

doi:10.1016/S0254-0584(02)00492-3

Self-assembled 3D photonic crystals from ZnO colloidal spheres

Eric W. Seelig, Betty Tang, Alexey Yamilov, Hui Cao, R. P.H. Chang^*

^*Corresponding author for this work

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

221 Scopus citations

Abstract

We present a novel method for the controlled synthesis of monodisperse ZnO colloidal spheres. These spheres are self-assembled into fcc periodic arrays. Optical measurements, including reflection-mode optical microscopy and transmission and single-domain reflection spectroscopy, reveal that the periodic arrays exhibit a photonic band gap in the (1 1 1) direction of the fcc lattice, and calculations are presented to estimate the effective value of the refractive index of the colloidal spheres. Finally, photoluminescence (PL) measurements show that the ZnO lasing thresholds are lower in periodic structures than in random arrays of identical spheres.

Original language	English (US)
Pages (from-to)	257-263
Number of pages	7
Journal	Materials Chemistry and Physics
Volume	80
Issue number	1
DOIs	https://doi.org/10.1016/S0254-0584(02)00492-3
State	Published - Apr 29 2003

Keywords

Colloidal spheres
Photonic crystals
Self-assembly
Zinc oxide

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics

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10.1016/S0254-0584(02)00492-3

Cite this

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title = "Self-assembled 3D photonic crystals from ZnO colloidal spheres",

abstract = "We present a novel method for the controlled synthesis of monodisperse ZnO colloidal spheres. These spheres are self-assembled into fcc periodic arrays. Optical measurements, including reflection-mode optical microscopy and transmission and single-domain reflection spectroscopy, reveal that the periodic arrays exhibit a photonic band gap in the (1 1 1) direction of the fcc lattice, and calculations are presented to estimate the effective value of the refractive index of the colloidal spheres. Finally, photoluminescence (PL) measurements show that the ZnO lasing thresholds are lower in periodic structures than in random arrays of identical spheres.",

keywords = "Colloidal spheres, Photonic crystals, Self-assembly, Zinc oxide",

author = "Seelig, {Eric W.} and Betty Tang and Alexey Yamilov and Hui Cao and Chang, {R. P.H.}",

note = "Funding Information: This work is supported by the National Science Foundation under grant number ECS-9877113 and by the Northwestern University Materials Research Science and Engineering Center. Copyright: Copyright 2004 Elsevier Science B.V., Amsterdam. All rights reserved.",

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T1 - Self-assembled 3D photonic crystals from ZnO colloidal spheres

AU - Seelig, Eric W.

AU - Tang, Betty

AU - Yamilov, Alexey

AU - Cao, Hui

AU - Chang, R. P.H.

N1 - Funding Information: This work is supported by the National Science Foundation under grant number ECS-9877113 and by the Northwestern University Materials Research Science and Engineering Center. Copyright: Copyright 2004 Elsevier Science B.V., Amsterdam. All rights reserved.

PY - 2003/4/29

Y1 - 2003/4/29

N2 - We present a novel method for the controlled synthesis of monodisperse ZnO colloidal spheres. These spheres are self-assembled into fcc periodic arrays. Optical measurements, including reflection-mode optical microscopy and transmission and single-domain reflection spectroscopy, reveal that the periodic arrays exhibit a photonic band gap in the (1 1 1) direction of the fcc lattice, and calculations are presented to estimate the effective value of the refractive index of the colloidal spheres. Finally, photoluminescence (PL) measurements show that the ZnO lasing thresholds are lower in periodic structures than in random arrays of identical spheres.

AB - We present a novel method for the controlled synthesis of monodisperse ZnO colloidal spheres. These spheres are self-assembled into fcc periodic arrays. Optical measurements, including reflection-mode optical microscopy and transmission and single-domain reflection spectroscopy, reveal that the periodic arrays exhibit a photonic band gap in the (1 1 1) direction of the fcc lattice, and calculations are presented to estimate the effective value of the refractive index of the colloidal spheres. Finally, photoluminescence (PL) measurements show that the ZnO lasing thresholds are lower in periodic structures than in random arrays of identical spheres.

KW - Colloidal spheres

KW - Photonic crystals

KW - Self-assembly

KW - Zinc oxide

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EP - 263

JO - Materials Chemistry and Physics

JF - Materials Chemistry and Physics

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Self-assembled 3D photonic crystals from ZnO colloidal spheres

Abstract

Keywords

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