Novel Narrow Band Cyan-Green Phosphor LiK7[Li3SiO4]8:Eu2+ with Enhanced Suppression of Second Broad Band Emission

被引：13

作者：

Wimmer, Daniel S. ^{[1
]}

Seibald, Markus ^{[2
]}

Baumann, Dominik ^{[2
]}

Peschke, Simon ^{[2
]}

Wurst, Klaus ^{[1
]}

Heymann, Gunter ^{[1
]}

Dutzler, Daniel ^{[1
]}

Garcia-Fuente, Amador ^{[3
,4
]}

Urland, Werner ^{[5
]}

Huppertz, Hubert ^{[1
]}

机构：

[1] Leopold Franzens Univ Innsbruck, Inst Allgemeine Anorgan & Theoret Chem, Innrain 80-82, A-6020 Innsbruck, Austria

[2] OSRAM Opto Semicond GmbH, Mittelstetter Weg 2, D-86830 Schwabmunchen, Germany

[3] Univ Oviedo, Dept Fis, Calle Federico Garcia Lorca 18, Oviedo 33007, Spain

[4] Univ Oviedo, CSIC, Nanomat & Nanotechnol Res Ctr CINN, Avda Vega 4-6, El Entrego 33940, Spain

[5] Private Inst Theoret Chem Phys, Via Antonio Sciaroni 2, CH-6600 Muralto, Switzerland

来源：

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY | 2021年 / 2021卷 / 43期

关键词：

Crystal structure; Europium; High-temperature synthesis; Lithosilicate phosphor; Luminescence; Solid-state reaction; LITHOSILICATE; CRYSTAL; OXIDES; LEDS;

D O I：

10.1002/ejic.202100550

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

LiK7[Li3SiO4](8):Eu2+ (LKLSO:Eu2+) was synthesized by a high-temperature solid-state reaction. It is accessible from K2CO3, Li2O, SiO2, and an Eu-source (Eu2O3) by conventional solid-state reaction in nickel crucibles under a constant flow of forming gas. The crystal structure of LKLSO has been determined by single-crystal X-ray diffraction and it crystallizes in the tetragonal space group I41/a (no. 88) with the lattice parameters a=1560.83(5), c=1278.23(4) pm, and a volume of V=0.31140(2) nm(3). The compound is isostructural to NaK7[Li3SiO4](8):Eu2+ but, in contrast, features an enhanced suppression of the second broad band emission through the specific channel filling in the crystal structure. Despite the observed positional disorder in the structure, the cyan-green phosphor shows a narrow band emission with a maximum at 511 nm and a fwhm of 45 nm (0.215 eV).

引用

页码：4470 / 4481

页数：12

共 51 条

[1]

AKSELRUD LG, 1989, KRISTALLOGRAFIYA+, V34, P484

[2]

[Anonymous], 2018, ANGEW CHEM, V130, P11902

[3]

[Anonymous], 2018, ANGEW CHEM, V130, P13865

[4]

[Anonymous], 2018, ANGEW CHEM, V130, P8875

[5]

[Anonymous], 2011, Angew. Chem, V123, P7898

[6]

[Anonymous], 2005, WINXPOW VERSION 2 23

[7]

[Anonymous], 2018, ANGEW CHEM INT EDIT, V57, P11728

[8]

[Anonymous], 2009, KCE Budget tool version 4.2

[9]

[Anonymous], 2014, SAINT VERS 8 34A

[10]

Baumann D., 2018, WO, Patent No. [WO/2018/029304, 2018029304]

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