Strong circular Bragg phenomena in self-ordered porous helical nanorod arrays of Alq3
| Autor: | Bryan Szeto, Michael J. Brett, Peter C. P. Hrudey |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2006 |
| Předmět: |
polarization
Photoluminescence Materials science thin film structure Physics and Astronomy (miscellaneous) business.industry aluminium Physics::Optics Organic semiconductor Condensed Matter::Materials Science Optics thin films Liquid crystal Optoelectronics Nanorod Thin film business Lasing threshold Chiral symmetries Circular polarization Photonic crystal |
| DOI: | 10.1063/1.2216903 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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