Photonic Properties of Inverse Opals Fabricated from Lanthanide-Doped LaPO4 Nanocrystals
Autor(en): | Oertel, Anke Lengler, Cornelia Walther, Thomas Haase, Markus |
Stichwörter: | BAND-GAP; Chemistry; Chemistry, Physical; CORE; CRYSTALS; GROWTH; Materials Science; Materials Science, Multidisciplinary; PARTICLES; PHOSPHATE NANOPARTICLES; SPONTANEOUS EMISSION | Erscheinungsdatum: | 2009 | Herausgeber: | AMER CHEMICAL SOC | Journal: | CHEMISTRY OF MATERIALS | Volumen: | 21 | Ausgabe: | 16 | Startseite: | 3883 | Seitenende: | 3888 | Zusammenfassung: | A new method for the preparation of rare-earth doped inverse opal materials is reported. Template structures consisting of ordered stacks of PMMA-spheres were infiltrated with colloidal solutions of luminescent LaPO4:Ln (Ln = Tb3+, Eu3+) nanocrystals containing a small amount of prehydrolyzed tetramethoxysilane as binder. After calcination of the PMMA-template, light-emitting, photonic materials with inverse opal structure are obtained, Under UV-excitation the materials display the characteristic luminescence line emission of the lanthanide component. We show that by adjusting the diameter of the PMMA-spheres of the template the photonic band structure of the material can be controlled in a way that modifies the lanthanide luminescence. |
ISSN: | 08974756 | DOI: | 10.1021/cm900829g |
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