COMPOUND BASED ON AN ALKALINE-EARTH, SULPHUR AND ALUMINIUM, GALLIUM OR INDIUM, METHOD FOR PREPARING SAME AND USE THEREOF AS LUMINOPHORE,申请号WO2002FR02010-传众专利搜索

COMPOUND BASED ON AN ALKALINE-EARTH, SULPHUR AND ALUMINIUM, GALLIUM OR INDIUM, METHOD FOR PREPARING SAME AND USE THEREOF AS LUMINOPHORE

申请公布号：WO02100976(A1)

申请号：WO2002FR02010

申请日期：2002.06.12

申请公布日期：2002.12.19

申请人：

RHODIA ELECTRONICS AND CATALYSIS;LE MERCIER, THIERRY;LE ROUX, OLIVIER

发明人：LE MERCIER, THIERRY;LE ROUX, OLIVIER

分类号：C01G15/00;C09K11/02;C09K11/08;C09K11/62;C09K11/64;C09K11/77;C09K11/84;(IPC1-7):C09K11/02

主分类号：C01G15/00

摘要：The invention concerns a compound based on at least an element A selected among alkaline-earths, at least an element B selected among aluminium, gallium or indium, sulphur and a doping agent capable of providing said compound with luminescent properties. The invention is characterised in that it is in the form of a mixture of a majority crystallographic phase of type AB2S4 and a crystallographic phase of type B2S3. Said compound is prepared by a method which consists in: forming a solution or a suspension comprising salts or sols of elements A, B and doping agent, in a proportion such that the atomic ratio B/(A+doping agent) is at least 2.06; spray drying the solution or suspension; sulphidizing the resulting product. Said compound can be used as luminophore, in particular in cathodoluminescence.