Ba sub(3)P sub(5)N sub(10)Br:Eu super(2+): A Natural-White-Light Single Emitter with a Zeolite Structure Type

• Published in: Angewandte Chemie International Edition Vol. 54; no. 8; pp. 2383 - 2387
• Main Authors: Marchuk, Alexey, Schnick, Wolfgang
• Format: Journal Article
• Language: English
• Published: 01.02.2015
• Subjects: Diffraction; Emittance; Luminescence; Single crystals; Spectroscopy; Synthesis; X-rays; Zeolites
• ISSN: 1433-7851; 1521-3773
• DOI: 10.1002/anie.201410528

Illumination sources based on phosphor-converted light emitting diode (pcLED) technology are nowadays of great relevance. In particular, illumination-grade pcLEDs are attracting increasing attention. Regarding this, the application of a single warm-white-emitting phosphor could be of great advantage. Herein, we report the synthesis of a novel nitridophosphate zeolite Ba sub(3)P sub(5)N sub(10) Br:Eu super(2+). Upon excitation by near-UV light, natural-white-light luminescence was detected. The synthesis of Ba sub(3)P sub(5)N sub(10) Br:Eu super(2+) was carried out using the multianvil technique. The crystal structure of Ba sub(3)P sub(5)N sub(10)Br:Eu super(2+) was solved and refined by single-crystal X-ray diffraction analysis and confirmed by Rietveld refinement and FTIR spectroscopy. Furthermore, spectroscopic luminescence measurements were performed. Through the synthesis of Ba sub(3)P sub(5)N sub(10)Br:Eu super(2+), we have shown the great potential of nitridophosphate zeolites to serve as high-performance luminescence materials. Under pressure: A nitridophosphate zeolite Ba sub(3)P sub(5)N sub(10) Br was synthesized by a high-pressure/high-temperature reaction at pressures between 1 and 5GPa and 1000 degree C and investigated by single-crystal X-ray diffraction (see picture; Br=purple, Ba=gray, PN sub(4)tetrahedra=green). Doped with Eu super(2+)ions, it exhibits natural-white-light luminescence as a single emitter upon excitation by near-UV light.