Tuning the Langasite, La3SbZn3Si2O14, towards white light emission: synthesis, structure, SHG and photoluminescence studies

被引:12
作者
Bhim, Anupam [1 ]
Mohanty, Ashutosh [1 ]
Natarajan, Srinivasan [1 ]
机构
[1] Indian Inst Sci, Solid State & Struct Chem Unit, Framework Solids Lab, Bangalore 560012, Karnataka, India
关键词
ENERGY-TRANSFER; SINGLE-PHASE; 2ND-HARMONIC GENERATION; LUMINESCENT PROPERTIES; TUNABLE LUMINESCENCE; EMITTING PHOSPHOR; CRYSTAL-STRUCTURE; MAGNETIC-PROPERTIES; METAL-IONS; COLOR;
D O I
10.1039/d0dt03450a
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
A series of single-phase color-tunable Langasite, La3SbZn3Si2O14:RE3+ (RE = Eu, Tb, and Tm) phosphors have been prepared and characterized employing X-ray diffraction (XRD), Raman, and photoluminescence (PL) studies. The substituted compounds, La3SbZn3Si2O14:Eu3+, La3SbZn3Si2O14:Tb3+ and La3SbZn3Si2O14:Tm3+ exhibit the characteristic emissions of Eu3+ (red), Tb3+ (green) and Tm3+ (blue), respectively. By carefully adjusting the concentration of Eu3+ ions in the La3SbZn3Si2O14:1% Tm3+, 2% Tb3+, x% Eu3+ system, we achieved a white emission with a reasonable quantum yield. The compounds are found to be SHG (second-harmonic generation) active with the highest values of 3.6 x KDP (potassium dihydrogen phosphate). In addition, the compounds exhibit reasonable dielectric constants with low loss. The present study demonstrates the color tunability of the Langasite family of compounds and establishes it as an adaptable structure.
引用
收藏
页码:17649 / 17657
页数:9
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