ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Infrared-to-visible upconversion phosphors Y2O3: Yb, Er and Gd2O3:Yb, Er with narrow sizedistribution were synthesized by using a stable microemulsion system, which included triton X-100,n-hexanol, cyclohexane and water. Appearance-controllable nanocrystals were achieved by adjusting theratios of assistant surfactant and surfactant. The X-ray diffraction patterns of the samples showed that thepowders were cubic phases of Y2O3 and Gd2O3, respectively. After calcination with different temperaturesettings in air atmosphere, the particles were spherical through the observation by scanning electronicmicroscopy. Red and green upconversion luminescence was obtained under 980 nm infrared excitation.Several contributions to the intensity of upconversion emission were also investigated. Theseupconversion phosphors may be used as fluorescent labels for the sensitive detection of biomolecule,immunoassay or DNA assays
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.336-338.101.pdf
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