COMPLEX SILVER VANADATE AS LUMINOFOR IN RED AND NEAR-INFRARED REGION OF LUMINESCENCE AND METHOD OF ITS OBTAINING Russian patent published in 2008 - IPC C09K11/58 C09K11/69 

FIELD: chemistry.

SUBSTANCE: invention can be used in manufacturing of indicators and sensors of ionising and infrared radiation. Initial mixture of ingredients is prepared, wt %: AgNO₃ - 39.91÷42.28; MCO₃ - 12.46÷17.3; where M - Ca or Sr; V₂O₅ - 42.74÷45.26; thoroughly mixing said components in presence of alcohol. Then it is heated to 300-350°C and expose at said temperature for 2-3 hours. After that it is heated again to 480-500°C and expose at said temperature for 95-105 hours. Powder is briquetted and thermally processed at 490-500°C during 38-42 hours. Complex silver vanadate which is obtained has composition Ag₂M(VO₃)_4, where M - Ca or Sr, and luminesces in red and near-infrared region up to 840-850 nm.

EFFECT: obtaining silver vanadate.

2 cl, 2 dwg, 2 ex