Absolute quantum yield measurements of colloidal NaYF4: Er3+, Yb3+ upconverting nanoparticles.
Nanoscale
; 2(8): 1417-9, 2010 Aug.
Article
en En
| MEDLINE
| ID: mdl-20820726
ABSTRACT
In this communication we describe a technique for measuring the absolute quantum yields (QYs) of upconverting nanomaterials based on the use of a commercially available fluorimeter and an integrating sphere. Using this setup, we have successfully acquired luminescence efficiency data (pump laser, absorbed pump, and visible emitted intensities) for lanthanide-doped upconverting nanoparticles. QYs in the range of 0.005% to 0.3% were measured for several NaYF(4) 2% Er(3+), 20% Yb(3+) nanoparticles with particle sizes ranging from 10 to 100 nm while a QY of 3% was measured for a bulk sample.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Iterbio
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Itrio
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Erbio
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Nanopartículas
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Fluoruros
Idioma:
En
Revista:
Nanoscale
Año:
2010
Tipo del documento:
Article
País de afiliación:
Canadá