COMPLEX CALCIUM METASILICATE OF EUROPIUM AND YTTRIUM, RED LUMINESCENT MATERIAL BASED THEREON FOR ULTRAVIOLET LIGHT-EMITTING DIODES AND METHOD OF PRODUCING SAID MATERIAL Russian patent published in 2012 - IPC C09K11/79 C09K11/78 

Abstract RU 2470982 C2

FIELD: physics.

SUBSTANCE: red luminescent material contains an amorphised phase of silicon oxide SiO2 and a crystalline phase dissolved therein, which contains microcrystals and is made of a complex calcium metasilicate of europium and yttrium Ca3EuxY2-x(SiO3O9)2, where 1.0≤x≤1.5. To obtain luminescent material, two starting mixtures are prepared first: calcium carbonate and europium oxide; calcium carbonate and yttrium oxide, and said mixtures are dissolved in nitric acid while heating to 150-180°C. Tetraethoxy silane is added to the solutions which are cooled to room temperature and said solutions are then evaporated at 150-180°C to form dry residues. The dry residues are then calcined at 900-950°C for 10-12 hours, crushed, mixed and pelletised and then annealed at 1350-1400°C for 70-72 hours with double intermediate crushing, stirring and pelletisation. The obtained mixtures are mixed in ratio (1:1)-(1:3) in the presence of alcohol, briquetted and annealed at 1300-1350°C for 40-50 hours with intermediate stirring after 15-20 hours.

EFFECT: invention enables to convert ultraviolet radiation of a light-emitting diode with dominant wavelength in the range from 385 nm to 400 nm to the 567-714 nm band and provide volumetric luminescence.

3 cl, 3 dwg, 2 ex

Similar patents RU2470982C2

Title Year Author Number
MATERIAL FOR LIGHT CONVERSION AND COMPOSITION FOR PRODUCTION THEREOF 2006
  • Vorob'Ev Viktor Andreevich
  • Vlas'Jants Galina Rafailovna
  • Kargin Nikolaj Ivanovich
  • Sinel'Nikov Boris Mikhajlovich
RU2319728C1
LIGHT-CONVERTING MATERIAL AND COMPOSITION FOR PRODUCING SAID MATERIAL 2007
  • Vorob'Ev Viktor Andreevich
  • Vlas'Jants Galina Rafailovna
  • Sinel'Nikov Boris Mikhajlovich
  • Kargin Nikolaj Ivanovich
  • Khramov Robert Nikolaevich
  • Kosobrjukhov Anatolij Aleksandrovich
  • Kreslavskij Vladimir Danilovich
RU2407770C2
METHOD FOR PRODUCTION OF FINELY-DISPERSED RED LUMINESCENT MATERIAL FOR GENERATION OF RESULTING WHITE LIGHT IN LIGHT EMITTING DIODES 2017
  • Kichuk Stanislav Nikolaevich
  • Mikhitaryan Boris Valerevich
RU2644465C1
METHOD FOR PRODUCING LUMINESCENT CERAMICS CONTAINING YAG:Ce PHASE FOR WHITE LIGHT SOURCES 2023
  • Tarala Vitalii Alekseevich
  • Vakalov Dmitrii Sergeevich
  • Lapin Viacheslav Anatolevich
  • Medianik Evgenii Viktorovich
  • Vorobev Viacheslav Ivanovich
  • Mironov Sergei Vladimirovich
  • Brazhko Ekaterina Aleksandrovna
RU2808387C1
COMPOSITE LUMINESCENT MATERIAL, METHOD OF PRODUCTION THEREOF (EMBODIMENTS) AND DATA MEDIUM 2023
  • Kuryatnikov Andrej Borisovich
  • Kornilov Georgij Valentinovich
  • Fedorova Elena Mikhajlovna
  • Torgashova Aleksandra Aleksandrovna
  • Drachenko Nikolaj Ivanovich
  • Pavlov Igor Vasilevich
  • Voskresenskaya Olga Igorevna
  • Kaploukhij Sergej Aleksandrovich
  • Abramenko Viktor Alekseevich
  • Osipov Vasilij Nikolaevich
  • Pozdnyakov Egor Igorevich
  • Salunin Aleksej Vitalevich
  • Ostrerov Mikhail Anatolevich
  • Khomchenko Yana Sergeevna
  • Lamakina Olga Sergeevna
  • Ogurtsova Anna Vladislavovna
RU2821639C1
AP-CONVERSION FLUORESCENT NANO-GLASS CERAMICS 2016
  • Rachkovskaya Galina Evtikhievna
  • Zakharevich Galina Borisovna
  • Lojko Pavel Aleksandrovich
  • Vilejshikova Elena Vladimirovna
  • Yumashev Konstantin Vladimirovich
RU2636997C1
METHOD FOR OBTAINING A LUMINESCENT MATERIAL AND CONTROLLING THE CHROMATICITY OF ITS GLOW 2021
  • Kolesnikov Ilya Evgenevich
  • Bubnova Rimma Sergeevna
  • Povolotskij Aleksej Valerevich
  • Biryukov Yaroslav Pavlovich
  • Povolotskaya Anastasiya Valerevna
  • Shorets Olga Yurevna
  • Filatov Stanislav Konstantinovich
RU2772826C1
BLUE-EMITTING PHOTOLUMINOPHOR FOR GAS PANEL SCREENS AND A METHOD FOR PREPARATION THEREOF 2001
  • Vishnjakov A.V.
  • Soshchin N.P.
RU2236433C2
METHOD FOR PRODUCING RED-EMITTING LUMINESCENT MATERIAL 2022
  • Bubnova Rimma Sergeevna
  • Povolotskij Aleksej Valerevich
  • Biryukov Yaroslav Pavlovich
  • Kolesnikov Ilya Evgenevich
  • Volkov Sergej Nikolaevich
  • Filatov Stanislav Konstantinovich
  • Galafutnik Lidiya Georgievna
RU2798852C1
YTTRIUM OXYSULFIDE-BASED LUMINOPHOR SYNTHESIS METHOD 2005
  • Vorob'Ev Viktor Andreevich
  • Vlas'Jants Galina Rafailovna
  • Sinel'Nikov Boris Mikhajlovich
  • Kargin Nikolaj Ivanovich
  • Khramov Robert Nikolaevich
RU2312122C2

RU 2 470 982 C2

Authors

Zubkov Vladimir Georgievich

Surat Ljudmila L'Vovna

Tjutjunnik Aleksandr Petrovich

Leonidov Ivan Il'Ich

Melkozerova Marina Aleksandrovna

Dates

2012-12-27Published

2011-03-02Filed