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

• DOI: 10.1021/acs.chemmater.6b05196
• Publication Date: 2017-01-13T08:29:02Z
• Authors: Philipp Strobel; Volker Weiler; Cora Hecht; Peter J. Schmidt; Wolfgang Schnick
• Keywords: Broad band

The nitridomagnesosilicates Li2Ca2[Mg2Si2N6]:Eu2+ and Li2(Ca1.88Sr0.12)[Mg2Si2N6]:Eu2+ show narrow-band red emission at 638 634 nm, respectively, with an bandwidth of 62 nm (∼1513 cm–1) after excitation in the blue spectral region. Ce3+-doped samples luminescence green range (λem = 540 nm). compounds were synthesized via solid-state metathesis reaction Li melts. Refinement single-crystal X-ray diffraction data revealed that Li2(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) Å, β 97.2520(10)°, R1 0.021, wR2 0.047]. Crystal composition was checked by EDS ICP-OES measurements properties are compared state art emitting luminophors. On basis its emission, application novel luminophor high CRI white pcLEDs is promising.