Strong circular Bragg phenomena in self-ordered porous helical nanorod arrays of Alq3

Strong circular Bragg phenomena in self-ordered porous helical nanorod arrays of Alq3

Porous chiral thin films composed of a nearly hexagonal-close-packed array of helical nanorods of tris-(8-hydroxyquinoline) aluminum (Alq3) are fabricated using glancing angle deposition and exhibit a one-dimensional polarization-dependent photonic stop band. These chiral thin films transmit only on...

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Veröffentlicht in:Applied physics letters 2006-06, Vol.88 (25)
Hauptverfasser: Hrudey, Peter C. P., Szeto, Bryan, Brett, Michael J.
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Brett, Michael J.
description Porous chiral thin films composed of a nearly hexagonal-close-packed array of helical nanorods of tris-(8-hydroxyquinoline) aluminum (Alq3) are fabricated using glancing angle deposition and exhibit a one-dimensional polarization-dependent photonic stop band. These chiral thin films transmit only one handedness of circularly polarized light and emit highly circularly polarized photoluminescence. The strong circular Bragg phenomena exhibited by these films suggest potential for use of these films in low-threshold mirrorless lasing and circularly polarized emission applications, while the porosity of the films allows for infiltration by dyes or liquid crystals to enable the formation of unique hybrid materials.
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title Strong circular Bragg phenomena in self-ordered porous helical nanorod arrays of Alq3
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