Luminescence of the Narrow-Band Red Emitting Nitridomagnesosilicate Li2(Ca1-xSrx)2[Mg2Si2N6]:Eu2+ (x=0-0.06)

被引：91

作者：

Strobel, Philipp ^{[1
]}

Weiler, Volker ^{[2
]}

Hecht, Cora ^{[2
]}

Schmidt, Peter J. ^{[2
]}

Schnick, Wolfgang ^{[1
]}

机构：

[1] Univ Munich LMU, Dept Chem, Butenandtstr 5-13, D-81377 Munich, Germany

[2] Lumileds Germany GmbH, Lumileds Dev Ctr Aachen, Philipsstr 8, D-52068 Aachen, Germany

来源：

CHEMISTRY OF MATERIALS | 2017年 / 29卷 / 03期

关键词：

PARTICLE-DIAGNOSIS APPROACH; ELECTRONIC-STRUCTURE; PHOSPHOR; LEDS; NITRIDOSILICATES; NITRIDE; SHIFT;

D O I：

10.1021/acs.chemmater.6b05196

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The nitridomagnesosilicates Li2Ca2[Mg2Si2N6]:Eu2+ and Li-2(Ca1.88Sr0.12)[Mg2Si2N6]:Eu2+ show narrow-band red emission at 638 and 634 nm, respectively, with an emission bandwidth of 62 nm (similar to 1513 cm(-1)) after excitation in the blue spectral region. Ce3+-doped samples show luminescence in the green spectral range (lambda(em) = 540 nm). The compounds were synthesized via solid-state metathesis reaction in Li melts. Refinement of single-crystal X-ray diffraction data revealed that Li-2(Ca1.88Sr0.12)[Mg2Si2N6] crystallizes isomorphic to Li2Ca2[Mg2Si2N6]: C2/m [Z = 2, a = 5.5744(2), b = 9.8439(3), c = 6.0170(2) angstrom, beta = 97.2520(10)degrees, R-1 = 0.021, wR(2) = 0.047]. Crystal composition was checked by EDS and ICP-OES measurements and luminescence properties are compared to state of the art narrow-band red emitting luminophors. On the basis of its narrow-band emission, application of the novel red luminophor in high CRI white pcLEDs is promising.

引用

页码：1377 / 1383

页数：7

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