Up converting fluorescent material with nanometer level molybdate substrate and its prepn
Title：
Up converting fluorescent material with nanometer level molybdate substrate and its prepn
Application Number：
 01134861
Application Date：
 2001/11/16
Announcement Date：
 2002/05/08
Pub. Date：
Publication Number：
 1347958
Announcement Number：
 1171972
Grant Date：
 2004-10-20
Granted Pub. Date：
 2004-10-20
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 C09K 11/77
Applicant(s)：
 Tsinghua Univ.
Inventor(s)：
 Yi Guangshun, Sun Baoquan, Chen Depu
Key Words：
 Up converting, fluorescent material, nanometer level, molybdate substrate
Abstract：
 The present invention belongs to the field of nano fluorescent material. Lanthanum oxide (or yttrium or gadolinium oxide), ytterbium oxide and erbiom oxide (or thulium or holmium oxide) are first dissolved in acid to prepare solution; complexone and sodium or potassium molybdenate are added into the solution to produce precipitate, which is centrifugally separated and water washed to prepare aqueous gel, aqueous gel or further prepared alcoholic gel is finally cinerated in a high temperature furnace or heated in a hydrothermal reactor to obtain the nano level up converting fluorescent material. The said material has lanthanum molybdenate as matrix and ytterbium molybdenate and erbium molybdenate as dopant. The material thus prepared has small and homogeneous size, average size 50-60 nm and high light glowing strength and may meet the requirement as biological molecular fluorescent mark material.
Claim：
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