CORE-SHELL TYPE NANOPARTICLE PHOSPHOR

WIPO Patent Application WO/2007/102458

A1

It is intended to provide a core-shell type nanoparticle phosphor which has suitable nanoparticle properties for use in the field of bionanotechnology, has an excitation wavelength most appropriate for fluorescent observation and is excellent in luminance of photoluminescence and durability. This core-shell type nanoparticle phosphor, which is prepared by using a core nanoparticle phosphor obtained by baking a precursor particle synthesized by the crystallization reaction method and forming a shell part made of a metal compound differing from the components constituting the core nanoparticle phosphor on the surface of the core nanoparticle phosphor, is characterized in that, when the PL (photo luminescence) intensity of the core nanoparticle phosphor by PL is referred to as PL1 and the PL intensity of the core-shell type nanoparticle phosphor is referred to as PL2, the intensity ratio A (PL1/PL2) satisfies 0.001≤A≤0.1 and the average particle diameter of the core-shell type nanoparticle phosphor is 0.1 μm or less.

TSUKADA KAZUYA (JP)
GOAN KAZUYOSHI (JP)
FURUSAWA NAOKO (JP)
OKADA HISATAKE (JP)
HOSHINO HIDEKI (JP)

PCT/JP2007/054167

September 13, 2007

March 05, 2007

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KONICA MINOLTA MED & GRAPHIC (JP)
TSUKADA KAZUYA (JP)
GOAN KAZUYOSHI (JP)
FURUSAWA NAOKO (JP)
OKADA HISATAKE (JP)
HOSHINO HIDEKI (JP)

C09K11/08

JP2004083653A	2004-03-18
JP2001523758A	2001-11-27
JP2005320468A	2005-11-17
JP2003155477A	2003-05-30
JP2004292804A	2004-10-21
JP2005060132A	2005-03-10

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