Aerogels from CdSe/CdS Nanorods with Ultra-long Exciton Lifetimes and High Fluorescence Quantum Yields

Hydrogels are fabricated from CdSe/CdS seeded nanorod building blocks by the addition of hydrogen peroxide and converted to aerogels by supercritical drying. The aerogels show higher photoluminescence quantum yields and longer lifetimes than the hydrogels and the nanoparticle solutions. A model for...

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Veröffentlicht in:	Advanced materials (Weinheim) 2015-10, Vol.27 (40), p.6152-6156
Hauptverfasser:	Sánchez-Paradinas, Sara, Dorfs, Dirk, Friebe, Sebastian, Freytag, Axel, Wolf, Andreas, Bigall, Nadja C.
Format:	Artikel
Sprache:	eng
Schlagworte:	(absolute) quantum yields Aerogels Cadmium Compounds - chemical synthesis Cadmium Compounds - chemistry Cadmium selenides Cadmium sulfides CdSe/CdS seeded nanorods Drying Fluorescence Hydrogels Hydrogels - chemical synthesis Hydrogels - chemistry Hydrogen peroxide Intermetallics Light Microscopy, Electron, Scanning Microscopy, Electron, Transmission Nanorods Nanotubes - chemistry Nanotubes - radiation effects radiative decays Selenium Compounds - chemical synthesis Selenium Compounds - chemistry Selenium Compounds - radiation effects semiconductor nanoparticles Solutions Spectrum Analysis Water - chemistry
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Zusammenfassung:	Hydrogels are fabricated from CdSe/CdS seeded nanorod building blocks by the addition of hydrogen peroxide and converted to aerogels by supercritical drying. The aerogels show higher photoluminescence quantum yields and longer lifetimes than the hydrogels and the nanoparticle solutions. A model for this observation is derived.
ISSN:	0935-9648 1521-4095
DOI:	10.1002/adma.201502078